Stock market and trading terms, defined
Exchanges, orders, settlement, indices, corporate actions and the trading vocabulary around them. 108 terms with full definitions.
Market vocabulary describes machinery, not opinion
Most of the words on this page describe how the market physically works rather than what to buy. Institutions: SEBI, NSE, BSE, clearing corporations, depositories, depository participants. Process: order types, matching, T+1 settlement, auction, circuit limits, delivery versus intraday. Corporate actions: bonus, split, rights, buyback, dividend, record date and ex-date.
The corporate action group causes the most avoidable errors, because the price change on an ex-date looks like a loss and is not. A share that halves on a 1:1 bonus has not fallen; you simply hold twice as many. The definitions below state the mechanism rather than the folklore.
The institutional group matters for a different reason: it explains who actually holds your shares. They sit with a depository in your name, not with your broker, which is why a broker failure does not by itself put holdings at risk. That one fact is worth the reading time on its own.
108 stock market terms, A to Z
Definitions are unabridged. Worked examples for every term live in the interactive glossary.
Algorithmic Trading
Algorithmic trading (also known as algo trading or automated trading) refers to the use of computer programs and pre-defined rules to execute trades in financial markets without direct human intervention at the point of execution. Algorithms analyse market data — price, volume, order flow, news, macroeconomic releases — and execute buy or sell orders at speeds and frequencies impossible for human traders. In India, SEBI recognises and regulates algorithmic trading under its framework for direct market access (DMA) and co-location services. Algorithmic trading accounts for approximately 50–60% of NSE’s total order volume, reflecting its dominance in Indian equity, derivatives, and currency markets. SEBI’s regulatory framework for algo trading requires all algorithms to be approved by the exchange before deployment, with stringent audit trails and kill switch mechanisms to halt trading in case of malfunction. Co-location services — where trading servers are housed within the exchange’s data centre to minimise latency — are available to registered participants who pay for proximity. Algorithmic strategies in India span a wide spectrum: statistical arbitrage (exploiting price differentials between related securities), trend-following algorithms, mean-reversion strategies, market-making algorithms (providing continuous bid and ask quotes for liquidity), index rebalancing arbitrage, and event-driven strategies triggered by news or earnings announcements. Retail investors in India can now also access simplified algorithmic trading tools through SEBI-registered algo brokers and platforms. SEBI’s 2022 circular on algorithm trading by retail investors mandated that any API-based automated trading solution must be tagged as an “algo” and routed through the exchange’s algo framework, with the broker taking responsibility for the algorithm’s compliance. Platforms like Zerodha Streak and AlgoTest allow non-programmers to build, backtest, and deploy simple rule-based strategies. The key risk in algorithmic trading is the “flash crash” scenario — where interconnected algorithms amplify a price move, creating a cascade. The NSE experienced such events in currency derivatives markets, leading to circuit-breaker improvements. Understanding the basics of algo trading helps retail investors appreciate why order books can behave unusually during volatile sessions.
Allotment (IPO)
IPO allotment is the process of distributing shares to applicants after the IPO subscription period closes. For retail investors (investment up to ₹2 lakh), SEBI mandates minimum one lot allotment per applicant if oversubscription is below 1× in retail category — reducing to lottery when oversubscribed. Allotment status is available within 6 business days of IPO closing.
ASBA (Application Supported by Blocked Amount)
ASBA is the mandatory IPO application mechanism in India where the application money is blocked in the investor’s bank account (not debited) until IPO allotment. If allotment is not received, funds are unblocked immediately. This ensures investors earn interest on their funds during the application period and there is no fund risk.
At the Money (ATM) Option
An At the Money (ATM) option is a call or put option where the strike price is approximately equal to the current market price of the underlying asset. ATM options have significant time value but zero intrinsic value. They are the most liquid and widely traded options in Indian F&O markets.
Bear Market
A bear market occurs when stock prices fall 20% or more from recent highs, sustained over at least two months. It signals widespread pessimism and economic slowdown. Bear markets are characterised by falling corporate earnings, rising unemployment, and negative investor sentiment.
Black-Scholes Model
The Black-Scholes model is the theoretical framework for pricing European options — calculating fair option premium based on 5 inputs: stock price, strike price, time to expiry, risk-free rate, and implied volatility. NSE uses Black-Scholes for settlement price computation. Actual option prices deviate from theoretical prices due to implied volatility skew and market sentiment.
Block Deal vs Bulk Deal
A block deal and a bulk deal are two distinct mechanisms used on Indian stock exchanges for trading large quantities of shares, each with specific rules governing how and when they can be executed. A block deal is a single transaction of a minimum of 5 lakh shares or a minimum value of Rs 10 crore, whichever is lower, executed between two parties — a buyer and a seller — at an agreed price within a narrow range of the prevailing market price. Block deals take place in a special trading window opened by NSE and BSE between 8:45 AM and 9:00 AM (first window) and 2:05 PM and 2:20 PM (second window) on trading days, separate from the regular market session. Information about block deals — the name of the buyer, seller, quantity, and price — is disclosed to the exchanges immediately after execution. A bulk deal, in contrast, is defined as any single transaction or a series of transactions in a security on a given day that crosses 0.5% of the total number of shares listed on the exchange. Bulk deals occur during regular trading hours and are disclosed to the exchanges at the end of the trading day (by 6 PM). Unlike block deals, which have a minimum threshold and a specific window, bulk deals can happen incrementally throughout the day. Both block and bulk deals are important transparency mechanisms: they alert the market to large institutional trades, promoter stake changes, or significant position building/unwinding by major investors. The significance of block and bulk deal disclosures lies in the information they convey. When a reputed mutual fund or FII appears as a buyer in a block deal, retail investors often interpret it as a bullish signal. Conversely, promoter offloading via block deals (often called “promoter stake sale”) can indicate a need for cash, lock-in expiry monetisation, or loss of confidence. However, investors must be careful about reading too much into individual deals — context matters. A foreign private equity fund selling via a block deal might simply be exiting after a successful 5-year investment rather than expressing a view on the company’s future prospects.
Blue Chip Stocks
Blue chip stocks are shares of large, well-established, financially stable companies with a long track record of reliable performance, strong brand value, and consistent dividend payments. In India, blue chips include companies like Reliance, TCS, Infosys, HDFC Bank, and HUL — often forming the core of Nifty 50 and Sensex indices.
Bonus Issue
A bonus issue (scrip dividend) distributes additional free shares to existing shareholders in proportion to their holdings, funded from retained earnings. Unlike stock splits, bonus shares reduce reserves but increase share capital.
Book Closure
Book closure is the period (typically 2–7 days) during which a company stops accepting transfer of shares — to determine which shareholders are entitled to receive dividends, participate in rights issues, or vote at AGMs. Shareholders who hold shares before the Record Date (1 day before book closure) are eligible for the declared benefit.
Bretton Woods System
The Bretton Woods System was the international monetary order established at the United Nations Monetary and Financial Conference held at Bretton Woods, New Hampshire, in July 1944, attended by 730 delegates from 44 Allied nations. The conference, led by British economist John Maynard Keynes and American Treasury official Harry Dexter White, created the International Monetary Fund (IMF) and the International Bank for Reconstruction and Development (World Bank), and established a new international monetary framework based on fixed but adjustable exchange rates, with the US dollar as the anchor currency convertible to gold at $35 per troy ounce. Under Bretton Woods, all participating countries fixed their currencies to the US dollar at agreed parities (with 1% bands), and the dollar was pegged to gold. This created a hierarchical international monetary system with the US dollar at the center — the “gold-dollar standard.” Countries could only devalue their currencies with IMF approval, providing stability. The system underpinned the post-war economic boom of the 1950s and 1960s (the “golden age of capitalism”), facilitating the rebuilding of Europe and Japan, and expansion of global trade. The US Marshall Plan ($13 billion in 1948 dollars) was implemented within this framework. The system had a fundamental flaw known as the “Triffin Dilemma,” identified by economist Robert Triffin in 1960: the world’s increasing need for dollar reserves meant the US had to run persistent balance-of-payments deficits, gradually undermining confidence in the dollar’s gold convertibility. By the late 1960s, US gold reserves had declined sharply relative to outstanding dollar liabilities abroad. On August 15, 1971, President Nixon “closed the gold window” — ending the dollar’s convertibility to gold for foreign central banks. By 1973, all major currencies had shifted to floating exchange rates, formally ending the Bretton Woods System. Its institutional legacy — the IMF and World Bank — remains central to global financial governance.
BSE SME Platform
BSE SME is a stock exchange platform allowing Small and Medium Enterprises to list and raise capital — with relaxed listing requirements compared to the Main Board. Minimum allotment is ₹1 lakh per applicant; market maker is mandatory to ensure liquidity. Successful SME companies can migrate to the BSE Main Board after meeting certain growth criteria.
BTST (Buy Today Sell Tomorrow)
BTST allows selling shares bought today before they are credited to your demat account (T+1 settlement). It carries auction risk — if the seller defaults, you may face a short delivery penalty.
Bull Market
A bull market is a period of rising stock prices — typically defined as a 20% rise from recent lows — characterised by strong investor confidence, economic expansion, and increasing corporate earnings. Bull markets can last months or years and often coincide with GDP growth and low unemployment.
Bull Market vs Bear Market
A bull market is defined as a period of rising stock prices — conventionally, a 20% or more rise from a recent trough — characterised by investor optimism, economic expansion, rising corporate earnings, and sustained buying pressure. A bear market is the opposite: a 20% or more decline from a recent peak, typically accompanied by economic slowdown, falling corporate profits, rising unemployment, and risk aversion. The terms are derived from the way the animals attack: a bull thrusts its horns upward; a bear swipes downward. India has experienced distinct bull and bear cycles: Bull markets — 2003-2008 (Sensex from 3,000 to 21,000; 7x in 5 years), 2009-2010 (recovery from global financial crisis lows), 2013-2018 (Sensex from 18,000 to 38,000), 2020-2022 (COVID recovery; Sensex from 25,000 to 62,000). Bear markets — 2008 financial crisis (Sensex fell 60%), 2011 correction (-28%), 2020 COVID crash (-38% in 40 days — the fastest bear market in history). Each bear market has eventually been followed by a bull market that exceeded the prior peak. Secular vs cyclical bull/bear markets: a secular (long-term) bull market lasts 10-15+ years driven by structural economic tailwinds (India’s demographic dividend, urbanisation, financial inclusion); cyclical bull/bear markets are shorter (1-3 years) driven by interest rate cycles and business cycles. India has been in a secular bull market since 2003 (broken by two severe cyclical bear markets in 2008 and 2020). Long-term investors who stayed invested through both bear markets achieved 15-17% CAGR over the 2003-2025 period.
Call Option
A call option gives the buyer the right (not obligation) to purchase an underlying asset (stock or index) at a predetermined strike price before expiry. The buyer pays a premium for this right. Call options appreciate when the underlying asset rises. Writing (selling) call options generates premium income but caps upside.
Capital Market
The capital market is the market where long-term financial instruments — equity shares, bonds, debentures, and government securities — are issued and traded. It is divided into: Primary Market (new issues — IPO, FPO, bond issuance) and Secondary Market (trading of existing securities on BSE/NSE). SEBI regulates all capital market activities in India.
CDSL (Central Depository Services Limited)
CDSL is one of India’s two securities depositories (the other being NSDL), holding securities in dematerialised form on behalf of investors. Every Demat account is either CDSL or NSDL. CDSL is BSE-promoted and has crossed 10 crore active Demat accounts — the largest depository in India.
Circuit Breaker
A circuit breaker is a regulatory mechanism that temporarily halts trading on stock exchanges when prices move beyond a specified percentage — to prevent panic selling or buying and allow the market to stabilise. SEBI mandates market-wide circuit breakers at 10%, 15%, and 20% movements in Nifty or Sensex.
Corporate Action
Corporate actions are events that bring material changes to a company’s securities — dividend payment, bonus shares, stock splits, rights issues, buybacks, and mergers. SEBI mandates companies to announce corporate actions with adequate notice. Corporate actions trigger automatic adjustments in Demat accounts and require no action from investors for most non-voluntary actions.
Dark Pool (Trading)
A dark pool is a private trading venue where large institutional orders are executed away from public exchange order books — to prevent price impact (moving markets before completing the full order). Dark pools are regulated in mature markets but are not yet significant in India, where most trading happens on transparent NSE/BSE order books.
Delivery Trading
Delivery trading involves buying shares and taking delivery into your Demat account — holding them for more than one trading day. Unlike intraday trading (squared off same day), delivery trades involve actual ownership of shares. Delivery trades attract Securities Transaction Tax (STT) at 0.1% on buy and sell sides.
Delivery vs Intraday Trading
Delivery trading involves buying shares and holding them overnight — they move to your demat account. Intraday trading means opening and closing positions within the same trading day. Intraday offers leverage but requires discipline; delivery requires capital.
Demat Account
A Demat (Dematerialised) account holds securities — shares, bonds, ETFs, and mutual funds — in electronic form, eliminating the need for physical share certificates. In India, Demat accounts are held with CDSL or NSDL through a Depository Participant (DP) such as Zerodha, Groww, or HDFC Securities.
Learn: Stock Markets →Dematerialisation
Dematerialisation is the process of converting physical share certificates into electronic form and crediting them to a Demat account. Investors with old physical shares submit them through their DP (Depository Participant) to CDSL/NSDL for dematerialisation. Once dematerialised, shares can be traded on stock exchanges and transferred electronically.
Depository Participant (DP)
A Depository Participant is a SEBI-registered intermediary that acts as an agent of CDSL or NSDL to provide Demat account services to investors. Banks (HDFC Securities, SBI Securities), brokers (Zerodha, Groww, Angel One), and financial institutions act as DPs. The DP charges annual maintenance fees (AMC) for Demat accounts.
Depository Receipts (ADR/GDR)
ADRs (American Depositary Receipts) and GDRs (Global Depositary Receipts) allow foreign companies to list shares in US/global markets without direct listing. Infosys, HDFC Bank have ADRs on NYSE. Price arbitrage between ADR and domestic shares is exploited by traders.
Dow Jones Industrial Average
The Dow Jones Industrial Average (DJIA), commonly called “the Dow,” is the oldest and most iconic US stock market index, created by Charles Dow and Edward Jones in 1896 and originally comprising 12 industrial companies. Today it tracks 30 large-cap “blue chip” US companies selected by the Dow Jones Index Committee — currently including Apple, Microsoft, Goldman Sachs, Boeing, Johnson & Johnson, Coca-Cola, Walt Disney, Chevron, and others. Unlike most major indices, the Dow is price-weighted (a stock at $500 has 5x the influence of a $100 stock), rather than market-cap weighted. The Dow’s price-weighting and small membership (30 stocks vs. S&P 500’s 500) make it a less comprehensive representation of the US economy than the S&P 500 or NASDAQ Composite. However, its century-long history and cultural significance make it the most quoted market benchmark in mainstream media. The Dow first crossed 100 (1906), 1,000 (1972), 10,000 (1999), 20,000 (2017), 30,000 (2020), and 40,000 (2024) — each milestone covered extensively by global financial media. India’s BSE Sensex (Bombay Stock Exchange Sensitive Index) is often called “India’s Dow Jones” — comprising 30 blue-chip companies on BSE. The parallel is imperfect (BSE Sensex is free-float market-cap weighted, unlike the Dow’s price weighting) but captures the cultural role: both are the most recognisable indices in their respective markets.
DRHP (Draft Red Herring Prospectus)
A DRHP is the preliminary prospectus filed by a company with SEBI before an IPO — containing company background, financial history, business risk factors, industry overview, use of proceeds, and promoter details. SEBI reviews the DRHP and issues observations. The final Red Herring Prospectus (RHP) is published with pricing details before the IPO opens.
Eurodollar
Eurodollars are US dollar-denominated deposits held in banks outside the United States — originally predominantly in European banks (hence “Euro”), but now in financial institutions globally including in London, Tokyo, Singapore, Hong Kong, the Cayman Islands, and Bahrain. The term has nothing to do with the euro currency. The Eurodollar market emerged in the 1950s and 1960s as Soviet-bloc countries, fearing the US government might freeze their dollar accounts during the Cold War, shifted dollar holdings to European banks outside US jurisdiction. The London market became the dominant center, with Citibank’s London branch a pioneer. The Eurodollar market is the world’s largest and most liquid money market, with outstanding Eurodollar deposits estimated in the tens of trillions of dollars. Because Eurodollar deposits are held outside the US, they are not subject to Federal Reserve reserve requirements or FDIC deposit insurance, allowing Eurodollar banks to offer slightly higher deposit rates and lower lending rates than domestic US banks. LIBOR (now replaced by SOFR and Term SOFR) was historically derived from the Eurodollar interbank market. Eurodollar futures — traded on the Chicago Mercantile Exchange (CME) — were until recently the world’s largest and most liquid futures contracts, allowing companies and investors to hedge or speculate on future short-term US interest rates. For India and global emerging markets, the Eurodollar market is the primary source of offshore dollar funding. Indian banks and corporates raising ECBs (External Commercial Borrowings) access dollar loans priced off Eurodollar market benchmarks. When the Eurodollar market tightens — as it did dramatically in March 2020 — global dollar liquidity dries up, borrowing costs for Indian entities spike, and the rupee faces severe pressure. The Federal Reserve’s emergency dollar swap lines with major central banks (but not the RBI) during 2020 were designed to alleviate Eurodollar market stress, and their exclusion of India highlighted India’s position as not yet a “first tier” recipient of Fed emergency liquidity support.
European Central Bank (ECB)
The European Central Bank (ECB) is the central bank for the 20 Eurozone countries (EU member states that have adopted the euro as their currency). Founded in 1998 and headquartered in Frankfurt, Germany, the ECB’s primary mandate is to maintain price stability, defined as inflation close to but below 2% over the medium term. The ECB controls monetary policy for the Eurozone through setting key interest rates — the Main Refinancing Operations (MRO) rate, the Marginal Lending Facility rate, and the Deposit Facility rate — and through unconventional measures like QE and TLTROs (Targeted Longer-Term Refinancing Operations). The ECB’s Governing Council meets every 6 weeks and is chaired by the ECB President (currently Christine Lagarde, former IMF Managing Director). The ECB faces a unique challenge compared to the Fed: it sets one monetary policy for 20 diverse economies with different growth rates, inflation levels, and fiscal policies — Germany may have low inflation while Spain has high, but both are subject to the same ECB rate. This structural complexity is the root cause of periodic Eurozone crises (2010-2012 sovereign debt crisis, PIIGS — Portugal, Italy, Ireland, Greece, Spain). Post-COVID, the ECB raised rates from -0.5% to 4.0% between July 2022 and September 2023 — one of the most aggressive tightening cycles in ECB history — to combat Eurozone inflation that peaked at 10.6% in October 2022. Rate cuts began June 2024.
Face Value
Face value (par value) is the nominal value of a share as stated in the company’s memorandum. It is the base for calculating dividend (e.g., 500% dividend on ₹1 FV = ₹5/share). Most Indian companies have FV of ₹1, ₹2, or ₹10.
Federal Funds Rate
The Federal Funds Rate is the target interest rate set by the US Federal Reserve’s FOMC at which commercial banks borrow and lend their excess reserves to each other overnight. It is the most important interest rate in the world — it serves as the foundation upon which all other US (and effectively global) interest rates are set. When the Fed raises the Fed Funds Rate, borrowing becomes more expensive throughout the economy: mortgage rates rise, corporate bond yields increase, auto loan rates climb, and credit card rates go up. Conversely, rate cuts make borrowing cheaper, stimulating spending and investment. The Fed adjusts the rate in response to economic conditions: raising rates when inflation is too high or the economy is overheating (to cool demand and reduce price pressures); cutting rates when the economy is slowing or in recession (to stimulate growth). The current interest rate cycle most relevant for investors: March 2022 (rate: 0%) → July 2023 (rate: 5.25-5.50%) — 11 consecutive rate hikes over 16 months, the fastest tightening cycle since Paul Volcker’s 1980-81 campaign that ended 1970s inflation. Rate cuts began September 2024. Global financial markets — including India’s — react to every Fed meeting. The “dot plot” (each FOMC member’s interest rate forecast for the coming years) and the Fed Chair’s press conference following each meeting are closely scrutinised for forward guidance. “Higher for longer” (rates staying elevated even after hikes stop) was the 2023-2024 market concern.
Federal Reserve (Fed)
The Federal Reserve (commonly called “the Fed”) is the central bank of the United States, established in 1913. It operates through a dual mandate: maintaining price stability (targeting 2% annual inflation) and maximising employment. The Fed’s primary monetary policy tool is the Federal Funds Rate — the interest rate at which banks lend overnight reserves to each other. Changes to this rate propagate through the entire global financial system: mortgage rates, corporate borrowing costs, bond yields, and currency exchange rates all respond to Fed decisions. The Fed’s main decision-making body is the FOMC (Federal Open Market Committee), which meets 8 times per year. The Fed’s balance sheet — expanded through Quantitative Easing (QE, buying government bonds and mortgage-backed securities to inject money into the system) and shrunk through Quantitative Tightening (QT, allowing bonds to mature without reinvestment) — now exceeds $7 trillion, representing one of the most significant shifts in monetary history. The Fed Funds Rate went from 0-0.25% in March 2022 to 5.25-5.50% by July 2023 — the fastest tightening cycle in 40 years — in response to post-COVID inflation reaching 9.1%. India’s equity markets are highly sensitive to Fed actions: rising US rates typically cause FII outflows from emerging markets like India (as higher US yields make US assets relatively more attractive), weakening the rupee and creating market headwinds. Conversely, Fed rate cuts tend to trigger FII inflows into India, supporting both equities and the rupee.
FII vs DII Flows
FII (Foreign Institutional Investors) flows — buying/selling by foreign funds — drive large market moves. DII (Domestic Institutional Investors — mutual funds, LIC, banks) have become a strong counter-force, buying during FII selloffs. Net FII+DII flow determines market direction.
Futures (F&O)
Futures are standardised contracts to buy or sell an underlying asset (stock, index, commodity, or currency) at a predetermined price on a future date. In India, Nifty Futures and stock futures are the most actively traded. F&O trading requires margin and is considered high-risk — SEBI mandates special disclosures for retail investors.
High-Frequency Trading (HFT)
High-Frequency Trading (HFT) is a subset of algorithmic trading characterised by extremely fast order execution — measured in microseconds or nanoseconds — very high order-to-trade ratios, and positions held for extremely short durations (seconds to milliseconds). HFT firms use sophisticated hardware (FPGAs, custom-built servers), ultra-low-latency network connections (microwave towers, co-location), and complex algorithms to exploit tiny, fleeting pricing inefficiencies in financial markets. In India, HFT is conducted by a small number of registered participants — both domestic prop trading firms and foreign HFT entities — who pay for NSE and BSE co-location services to minimise the physical distance between their servers and the exchange’s matching engine. The strategies employed by HFT firms include market making (continuously quoting bid and ask prices in hundreds of instruments simultaneously, profiting from the spread), latency arbitrage (exploiting price differences between NSE and BSE for the same stock, or between the cash and futures market), and statistical arbitrage (identifying and exploiting short-lived correlations between related instruments). HFT firms contribute significantly to market liquidity — their continuous quoting tightens bid-ask spreads, benefiting all market participants — but are also criticised for creating artificial order book depth that disappears in volatile conditions, and for the systemic risk posed by runaway algorithms. SEBI has introduced several HFT-specific regulations: co-location access is offered through a random order queue mechanism to reduce unfair advantages; all co-location participants must undergo periodic audits; minimum resting time requirements for orders have been discussed to reduce quote-stuffing (the practice of flooding the order book with orders and then cancelling them to slow down competitors). HFT’s role in Indian markets is primarily in equity derivatives — the NSE’s derivatives segment is one of the world’s most active, with daily notional turnover often exceeding Rs 400 lakh crore. The dominance of HFT in this segment means that retail option buyers and sellers are often transacting against sophisticated algorithmic counterparties, making risk management essential.
Initial Margin (F&O)
Initial margin is the minimum deposit required to enter a futures or options writing position — set by the stock exchange and broker. For Nifty Futures, initial margin is typically 8–12% of contract value. Exchanges use SPAN (Standard Portfolio Analysis of Risk) margin system. Mark-to-market (MTM) losses must be met with additional margin (margin call).
Insider Trading
Insider trading refers to the buying or selling of a company’s securities by individuals who possess material, non-public information (MNPI) about the company. This is illegal and constitutes a serious market offence because it gives certain parties an unfair advantage over ordinary investors who lack access to the same information. In India, insider trading is governed by SEBI (Prohibition of Insider Trading) Regulations, 2015 (amended periodically), which define “insiders” broadly to include not just company employees and directors, but also connected persons — lawyers, auditors, bankers, consultants, and even family members of insiders who may receive a tip. SEBI’s framework establishes a trading restriction mechanism through “trading windows.” Companies are required to close their trading windows for designated employees during periods when MNPI exists — typically around quarterly earnings, board meetings, and major corporate decisions like mergers, acquisitions, or fundraising. Outside of trading windows, designated employees must pre-clear trades above a specified threshold with the compliance officer and disclose trades to the stock exchange within two days. The code also mandates that companies maintain a structured digital database (SDD) of all persons with access to MNPI. Violations carry civil penalties (disgorgement of profits plus up to three times the profits or Rs 25 crore, whichever is higher) and criminal prosecution under SEBI Act and PIT Regulations. SEBI has increasingly used sophisticated surveillance tools, including pattern recognition algorithms that flag unusual trading volume surges before corporate announcements, to detect potential insider trading. The regulator also uses phone records, email trails, and bank transaction data as evidence. Globally, insider trading enforcement has shaped corporate governance norms — the U.S. SEC’s landmark Raj Rajaratnam/Galleon Group case is often cited as a template. India’s landmark cases involve promoters and company officials who traded ahead of merger announcements or earnings surprises. The reputational and financial consequences for those convicted are severe and serve as a deterrent across the financial ecosystem.
Intraday Trading
Intraday trading involves buying and selling stocks within the same trading day — positions are squared off before market close at 3:30 PM. There is no delivery of shares; it is pure price speculation. Intraday profits are taxed as business income (not capital gains). SEBI data shows 89% of intraday traders lose money.
IPO (Initial Public Offering)
An IPO is the first time a private company offers its shares to the public on a stock exchange. Companies use IPOs to raise capital for growth, pay down debt, or allow early investors to exit. Indian IPOs are regulated by SEBI. Retail investors can apply through ASBA (Application Supported by Blocked Amount) via their bank or Demat account.
The IPO Markets →IPO Allotment Process
In India’s IPO allotment process, shares in a public offering are distributed among three investor categories: Qualified Institutional Buyers (QIBs — FPIs, domestic mutual funds, insurance companies) receive at least 75% of the issue in Book Built IPOs; Non-Institutional Investors (NIIs — HNIs applying above ₹2 lakh) receive 15%; and Retail Individual Investors (RIIs — applications up to ₹2 lakh) receive 10%. For popular oversubscribed IPOs, allotment in the retail category is done by lottery for full lot allocation — every successful applicant receives exactly one lot regardless of bid quantity. The IPO process timeline: the company files a Draft Red Herring Prospectus (DRHP) with SEBI; SEBI reviews and issues observations (typically 30 days); the company roadshows with institutional investors (book-building period begins); IPO opens for 3 days; bidding occurs via ASBA (Application Supported by Blocked Amount) — investor funds are blocked but not debited until allotment; allotment on T+6 (6 days after close); refunds on T+6; listing on T+7 (reduced from T+10 in 2023). ASBA ensures that unbid funds remain in the investor’s account earning interest during the bidding period. SME IPOs (on NSE Emerge and BSE SME platforms) have different rules: minimum application size ₹1 lakh; no retail-NII-QIB category split; QIBs not mandatory; promoter lock-in 3 years for pre-IPO shares. SME IPOs carry higher risk (smaller companies, less disclosure) but have historically generated spectacular listing gains during bull markets (2023-24 saw average SME IPO listing gains of 60-80%).
Large-cap vs Mid-cap vs Small-cap
The classification of stocks into large-cap, mid-cap, and small-cap is a foundational framework in equity investing, helping investors align risk tolerance with portfolio construction. In India, SEBI has codified these definitions with precision. Large-cap companies are those ranked 1 to 100 by average full market capitalisation on a rolling six-month basis. Mid-cap companies fall in the 101 to 250 rank range, and small-cap companies are those ranked 251 and beyond. This regulatory clarity ensures that mutual funds marketed as “large-cap” or “mid-cap” maintain consistent, comparable mandates across asset management companies (AMCs). Each segment carries a distinct risk-return profile. Large-cap stocks, such as those in the Nifty 50 or Sensex, are typically well-established businesses with strong balance sheets, consistent earnings, and extensive analyst coverage. They offer relatively lower volatility and are often the first destination for foreign institutional investors (FIIs). Mid-cap companies represent the growth engine of the economy — firms that have graduated beyond their startup phase but still have significant room to scale. They offer higher growth potential but also higher volatility. The Nifty Midcap 100 and BSE Midcap indices track this segment. Small-caps are the most speculative tier; many are under-researched, have thinner liquidity, and can experience dramatic price swings in response to market sentiment or corporate news. From a portfolio construction standpoint, the allocation across these segments should reflect an investor’s investment horizon and risk appetite. A conservative investor nearing retirement might prefer 80% large-cap and 20% mid-cap. An aggressive investor in their 30s may tilt toward mid- and small-caps for compounding potential. SEBI’s multi-cap fund mandate (minimum 25% each in large, mid, and small-cap) and flexicap funds give investors diversified exposure. The key nuance is that in India, the boundary between mid-cap and large-cap can shift significantly during rallies — a company that was mid-cap at the start of a bull run may graduate to large-cap status within 18–24 months, a phenomenon called “cap migration.”
Limit Order
A limit order is a stock market order to buy or sell a share at a specified price or better. Buy limit orders execute at the specified price or lower; sell limit orders execute at the specified price or higher. Unlike market orders (executed immediately at current price), limit orders may not execute if the price never reaches the specified level.
Limit Order vs Market Order
A limit order and a market order are the two fundamental order types available to investors in Indian equity markets, each suited to different trading contexts. A market order instructs the exchange to buy or sell a security immediately at the best available price in the order book. It guarantees execution but does not guarantee the price — in highly liquid stocks like HDFC Bank or Reliance, the actual execution price will be very close to the last traded price. In illiquid stocks, however, market orders can result in significant slippage, where the execution price deviates substantially from the expected price because there are insufficient orders at the desired price level. A limit order specifies a maximum price at which the investor is willing to buy or a minimum price at which they are willing to sell. The order sits in the exchange’s order book until either a matching counterparty appears at the limit price or the order expires. Limit orders guarantee price but not execution. If the market moves away from the limit price, the order will remain unexecuted. Day limit orders expire at the end of the trading session; GTD (Good Till Date) and GTC (Good Till Cancelled) orders can persist longer, though most Indian exchanges and brokers cap GTC orders at 365 days. NSE and BSE also offer immediate or cancel (IOC) orders, which execute whatever is possible immediately and cancel the remainder. For long-term investors, limit orders are generally preferable because they avoid paying the bid-ask spread unnecessarily and protect against flash crashes or erroneous price spikes. For short-term traders operating in liquid large-cap stocks during normal market hours, market orders offer speed of execution that is often worth the marginal price uncertainty. There are also stop limit orders (SL) — combining stop and limit mechanics — where a stop price triggers a limit order. Advanced order types available on Indian platforms include After Market Orders (AMO), which are placed after market hours and queued for the next session’s open, and basket orders for simultaneously executing multiple trades. Understanding order types is foundational for managing execution risk across different market conditions and asset classes.
Listed Company
A listed company is a publicly traded company whose shares are listed and traded on a recognized stock exchange (BSE/NSE). Listing brings obligations — quarterly results disclosure, SEBI compliance, insider trading regulations, related party transaction approvals, and annual reports. In exchange, listed companies get brand credibility, easier capital access, and liquidity for shareholders.
Lock-in Period (IPO Promoters)
After an IPO, SEBI mandates promoters’ shares be locked in for 18 months (anchor investors: 30 days). Pre-IPO investors may face 6-month lock-in. Lock-in prevents immediate insider selling that would crash the stock. After lock-in expiry, promoter selling is a key market overhang.
Long Position
Taking a long position means buying a security expecting its price to rise — the most natural investment position. In equity markets, all delivery purchases are long positions. In futures, buying futures is a ‘long futures’ position. In options, buying a call is long call. Long positions profit when underlying price rises; loss is limited to the amount invested (for equity) or premium (for options).
Margin Trading Facility (MTF)
The Margin Trading Facility (MTF) allows investors to buy securities by paying only a fraction of the total trade value upfront, with the broker funding the remainder through a loan. In India, SEBI regulates MTF under its circular framework, permitting SEBI-registered stockbrokers to offer margin trading on approved securities — typically stocks listed in Group I (high-liquidity, low-volatility securities as defined by the exchange). The investor pledges the purchased securities as collateral with the broker, and the broker charges interest on the funded amount, which typically ranges from 10% to 18% per annum depending on the broker and the duration. The mechanics of MTF involve the concept of “initial margin” — the percentage of the trade value the investor must fund themselves. SEBI mandates a minimum margin of 20% (i.e., maximum leverage of 5x) for MTF, though brokers can impose stricter requirements. For example, to buy Rs 1 lakh worth of shares, the investor needs to provide at least Rs 20,000, with the broker lending Rs 80,000. If the stock rises to Rs 1.2 lakh, the investor’s equity grows from Rs 20,000 to Rs 40,000 — a 100% return on invested capital. However, if the stock falls to Rs 90,000, the investor’s equity falls to Rs 10,000 — a 50% loss. This leverage amplification makes MTF a double-edged sword. If the stock price falls below a threshold where the investor’s equity is insufficient to cover the broker’s exposure, the broker issues a margin call and, if not met, liquidates the position. MTF differs from F&O leverage in that it involves actual ownership of the underlying shares: the investor holds the shares in their demat account (pledged to the broker) and is entitled to dividends and bonus shares, unlike F&O positions. MTF positions can be held for up to N+T days (SEBI mandates disclosure of maximum holding period, typically 90–365 days). The interest cost is a continuous drag — at 15% per annum, a position held for 6 months incurs a 7.5% interest cost, meaning the stock must appreciate by at least 7.5% to break even. SEBI has mandated that brokers disclose MTF interest rates and risks prominently, and investors must explicitly opt into MTF separately from their regular trading account.
Market Capitalisation
Market capitalisation is the total market value of a company’s outstanding shares — calculated as current share price × total shares outstanding. It classifies companies into Large Cap (Top 100 by market cap), Mid Cap (101–250), and Small Cap (251+) as per SEBI classification. India’s total market cap exceeded $5 trillion in 2024 — making it the 4th largest stock market globally.
Market Depth
Market depth shows the volume of buy and sell orders at various price levels beyond the best bid/ask. Deep markets absorb large orders without significant price impact. Shallow markets see large price swings from moderate orders.
Market Maker
A market maker is a financial entity (broker or institutional player) that continuously provides buy (bid) and sell (ask) quotes for a security, ensuring liquidity even when there are no natural buyers or sellers. In India, stock exchanges appoint market makers for illiquid small-cap stocks, SME IPO-listed companies, and derivatives contracts to ensure continuous trading.
Market Order
A market order is an instruction to buy or sell a security immediately at the best available current market price. It guarantees execution but not price — in volatile or illiquid stocks, you may get a significantly different price than expected (called slippage). Market orders are best for highly liquid large-cap stocks.
Micro Cap Stocks
Micro cap stocks are shares of very small companies with market capitalisation typically below ₹500 crore in India. They offer high growth potential but extreme illiquidity, volatility, governance risk, and limited analyst coverage. Suitable only for sophisticated investors.
Momentum Investing
Momentum investing is an investment strategy that capitalises on the tendency of assets that have performed well in the recent past to continue outperforming in the near future, and assets that have performed poorly to continue underperforming. The core empirical finding behind momentum — documented in academic research since Jegadeesh and Titman’s 1993 paper — is that stocks in the top decile of 3–12 month returns tend to outperform stocks in the bottom decile over the subsequent 3–12 months. This phenomenon, often called the “momentum factor” or “price momentum,” is one of the most robust and widely documented market anomalies globally, and has been documented in Indian markets as well. In India, momentum investing can be implemented at multiple levels: individual stock selection (buying recent outperformer stocks), sector rotation (moving capital from underperforming sectors to outperforming ones), and factor investing (investing in momentum factor ETFs or smart-beta funds). NSE has launched the Nifty 200 Momentum 30 Index, which selects 30 stocks from the Nifty 200 universe based on their 6-month and 12-month risk-adjusted returns, rebalanced every six months. Mutual funds tracking this index (offered by Motilal Oswal, UTI) have gained popularity as passive momentum strategies. SEBI also permits actively managed funds to explicitly follow momentum strategies. Academic research on Indian markets by IIM professors and SEBI researchers has confirmed the existence of the momentum premium in Indian equities, though it is cyclical and can underperform severely during sharp market reversals. The greatest risk to momentum strategies is the “momentum crash” — a rapid, sharp reversal that devastates portfolios concentrated in recent winners. Momentum crashes tend to occur at market bottoms when beaten-down stocks (prior losers) suddenly rebound sharply, while high-momentum stocks (recent winners) sell off disproportionately as investors rotate. The COVID crash of March 2020 caused a significant momentum crash in Indian markets: stocks that had been strong performers in 2019 (aviation, hotels, retail) were among the worst performers in March 2020, while unloved pharma and agri stocks surged. Momentum investors need a robust rebalancing discipline — regular (monthly or quarterly) portfolio rebalancing ensures the strategy exits losers promptly and adds to evolving winners, preventing a single cycle from causing permanent capital loss.
NASDAQ
The NASDAQ Composite is a stock market index that includes all stocks listed on the NASDAQ exchange — approximately 3,700 companies. NASDAQ was founded in 1971 as the world’s first electronic stock exchange and became the preferred listing venue for technology companies. The NASDAQ-100 (NDX) is the more widely tracked index, comprising the 100 largest non-financial companies listed on NASDAQ, heavily weighted toward Big Tech: Apple, Microsoft, NVIDIA, Meta, Alphabet, Amazon, Tesla, Broadcom, and others constitute a large majority of the index. NASDAQ is synonymous with technology and growth investing. Its price-to-earnings multiple is consistently higher than the S&P 500 (reflecting growth premium), making it more sensitive to interest rate changes — long-duration growth stocks are disproportionately affected when discount rates rise. This was dramatically illustrated in 2022, when rising Fed rates caused the NASDAQ-100 to fall 33% in a single year — its worst annual performance since the dot-com crash of 2000-2001. Growth stocks like Meta lost 65%, Netflix lost 70%, and many high-multiple SaaS companies fell 80%+. Indian IT companies (TCS, Infosys, Wipro, HCL Technologies) derive 50-70% of revenue from US technology companies — making NASDAQ sentiment a significant indirect driver of Indian IT stock performance. When NASDAQ corrects due to US tech spending cuts, Indian IT companies face client budget reductions within 2-4 quarters.
Nifty 50
Nifty 50 is the flagship stock market index of the National Stock Exchange (NSE), comprising the 50 largest and most liquid companies listed on NSE across 13 sectors. It serves as a benchmark for Indian equity performance, with a base value of 1,000 (November 3, 1995). Over 4,000 index funds and ETFs track the Nifty 50.
NSDL (National Securities Depository Limited)
NSDL is India’s first and largest securities depository, established in 1996, holding securities in dematerialised form. It is NSE-promoted and holds Demat accounts for investors through Depository Participants. NSDL also maintains the TIN (Tax Information Network) for TDS records and is a major PAN card issuer through NSDL eGov.
OFS (Offer for Sale)
OFS is a mechanism where existing shareholders (usually promoters or pre-IPO investors) sell their shares to the public through the stock exchange platform — without creating new shares or raising fresh capital for the company. OFS is cheaper and faster than a full IPO. In FY 2024, government raised ₹50,000+ crore through PSU OFS.
Open Interest
Open interest is the total number of outstanding (unsettled) futures or options contracts in the market at any point in time. Rising open interest with rising prices signals bullish sentiment; rising open interest with falling prices signals bearish sentiment. It helps traders gauge market participation and trend strength.
Options (Call & Put)
Options are derivatives contracts that give the buyer the right (but not the obligation) to buy (Call) or sell (Put) an underlying asset at a specified price (strike price) before or on expiry. The seller (writer) has the obligation to fulfill the contract. Options are used for hedging, speculation, and income generation.
Order Book
An order book is a real-time, electronic record of all outstanding buy and sell orders for a security on an exchange. It shows bid prices, ask prices, quantities, and market depth. Used by traders to gauge supply-demand dynamics.
Over-the-Counter (OTC) Market
OTC market involves direct transactions between parties without going through a centralised exchange. In India, corporate bonds, government securities, forex, and derivatives are primarily OTC. OTC markets offer customisation but have less transparency than exchanges.
P/E Ratio (Price-to-Earnings)
The P/E ratio compares a company’s current share price to its earnings per share. It indicates how much investors pay for each rupee of earnings. A high P/E may indicate overvaluation or high growth expectations; a low P/E may indicate undervaluation. The Nifty 50’s average P/E historically ranges from 15 to 25.
Learn: Fundamental Analysis →Petrodollar System
The petrodollar system refers to the global convention, formalized in the 1970s, by which crude oil is priced and traded internationally in US dollars. The arrangement emerged from a specific 1974 agreement between the United States and Saudi Arabia, brokered by Secretary of State Henry Kissinger and Treasury Secretary William Simon: Saudi Arabia agreed to price all oil sales exclusively in dollars and invest oil revenues (petrodollar “surpluses”) in US Treasury securities. In return, the US provided Saudi Arabia military protection and arms sales. Other OPEC nations subsequently adopted similar arrangements, cementing the dollar’s role as the world’s reserve currency after the collapse of the Bretton Woods gold standard in 1971. The petrodollar system creates a structural global demand for US dollars. Every oil-importing country — Japan, China, India, Germany, and virtually every other nation — must acquire dollars to purchase oil on world markets. This sustained demand for dollars allows the US to borrow at lower rates than would otherwise be possible (the “exorbitant privilege,” as French Finance Minister Valéry Giscard d’Estaing famously called it), run persistent trade deficits, and finance global military presence. Countries that have tried to price oil outside dollars — Iraq (Saddam Hussein proposed euro-priced oil), Libya (Muammar Gaddafi proposed a gold dinar), and more recently Russia and Iran — have faced severe US political, economic, or military pressure. For India, the petrodollar system has direct and costly consequences. India imports approximately 85% of its crude oil needs, almost entirely priced in dollars. This means India must earn or borrow dollars to pay its oil import bill — which exceeded $150 billion in FY2023-24. Any dollar strengthening (driven by US monetary policy or global risk-off events) immediately makes Indian oil imports more expensive in rupee terms, worsening India’s trade deficit and accelerating inflation. The rupee’s sensitivity to crude oil prices is therefore extreme. India has actively sought to reduce petrodollar dependence — negotiating rupee-ruble trade with Russia for discounted crude, and pushing for local currency trade agreements with the UAE and other Gulf nations.
Positional Trading
Positional trading is a trading style involving holding positions for weeks to months — longer than swing trading but shorter than pure investing. Positional traders use a blend of fundamental and technical analysis: fundamental analysis identifies “what to buy” (sector tailwinds, improving earnings trajectory, strong management) while technical analysis identifies “when to buy” (technical pullback, breakout from base, oversold momentum). The holding period typically ranges from one month to a year, capturing medium-term business catalysts and macro trends. In India, positional trading is particularly aligned with quarterly earnings cycles: positional traders identify companies likely to surprise on earnings, enter ahead of results, and hold through the earnings event and post-results momentum. Sector rotation — shifting capital from sectors losing favour to those gaining tailwinds — is a key positional strategy. For example, rotating from defensive IT stocks into capital goods and infrastructure stocks when a new government announces aggressive capex spending, and holding these positions through the budget cycle. Positional traders in India must be aware of F&O monthly expiry dynamics (the last Thursday of the month), when derivative positions are rolled over, creating volatility. They must also account for STCG tax (20% for holdings between 1 day and 12 months under current Indian rules) — unlike long-term investors who benefit from 12.5% LTCG after 1 year, making tax-aware position management important for positional traders.
Price-to-Book Ratio (P/B)
P/B ratio compares market price to book value per share. P/B = Market Price ÷ Book Value Per Share. P/B < 1 may indicate undervaluation (market values the company below its net assets). P/B is most meaningful for asset-heavy businesses — banking, manufacturing, real estate. For asset-light businesses (IT, consumer), P/B is less relevant than P/E.
Primary Market vs Secondary Market
Primary market is where new securities are issued directly by companies (IPO, FPO, bond issuance, rights issue) — proceeds go to the issuer. Secondary market is where existing securities trade between investors (BSE, NSE, SEBI) — proceeds go to the selling investor, not the company.
Promoter Holding
Promoter holding refers to the percentage of shares held by the founding/controlling shareholders of a listed company. High promoter holding (60–75%) generally signals conviction in the business; declining promoter holding (especially through pledging or selling) is a negative signal. SEBI mandates quarterly disclosure of promoter shareholding for all listed companies.
Public Issue
A public issue is the offer of shares or securities to the general public by a company, typically through an IPO (first-time listing) or FPO (follow-on offer). Public issues are regulated by SEBI and must be accompanied by a prospectus (DRHP) disclosing all material information. Retail investors are allocated a minimum 35% reservation in IPOs.
Pump and Dump
Pump and dump is a form of securities fraud in which a group of operators artificially inflate (“pump”) the price of a stock through false, misleading, or exaggerated statements, and then sell (“dump”) their pre-accumulated holdings at the inflated price, leaving ordinary investors with overpriced shares that subsequently collapse in value. In India’s equity markets, pump and dump schemes most frequently target illiquid small-cap and penny stocks traded on the NSE and BSE, where low market capitalisation and thin trading volumes make price manipulation easier and detection slower. The mechanics of a pump and dump typically follow a predictable pattern. Operators first accumulate a large position in a thinly traded stock at low prices, often over weeks or months using multiple related accounts (benami accounts) to avoid detection. The pumping phase then begins: a coordinated campaign of positive messaging across WhatsApp groups, Telegram channels, social media platforms, YouTube videos by fake “stock tips” channels, and even forged research reports drive retail investor interest. As retail buying pushes the stock into upper circuits over several days, the operators quietly dump their shares into the demand generated by retail investors. Once the selling is complete, the “story” evaporates, and the stock crashes — often locking helpless retail investors in lower circuits with no exit. SEBI’s market surveillance division actively monitors for pump and dump patterns using algorithmic surveillance that flags sudden spikes in price, volume, and social media mentions for illiquid securities. The regulator maintains a system called the Integrated Surveillance System (ISS) that coordinates with BSE and NSE surveillance departments. SEBI has issued advisories warning retail investors against following unregistered investment advisers on social media. Penalties for pump and dump organisers include trading bans, asset freezes, disgorgement of profits, and prosecution under Section 12A and 15HA of the SEBI Act. Retail investors should be deeply sceptical of any stock promoted aggressively in WhatsApp groups, especially those with no analyst coverage, low revenues, and sudden price spikes.
Put Option
A put option gives the buyer the right (not obligation) to sell an underlying asset at a predetermined strike price before or on expiry. Put options profit when the underlying asset’s price falls. They are used as portfolio insurance (hedging) or for speculative shorting without actually short-selling shares.
Put-Call Parity
Put-Call parity is an options pricing principle stating that the relationship between put prices, call prices, strike price, stock price, and time to expiry must be mathematically consistent to prevent arbitrage. If any one side is mispriced, traders immediately arbitrage — restoring equilibrium. Understanding PCR (Put-Call Ratio) helps gauge market sentiment.
Put-Call Ratio (PCR)
PCR is a sentiment indicator in options markets — calculated as total Put open interest divided by total Call open interest. PCR above 1 (more Puts than Calls) indicates bearish sentiment or hedging demand. PCR below 0.7 indicates bullish sentiment. Extreme PCR readings (above 1.5 or below 0.5) are contrarian signals — extreme bearishness often precedes market recovery.
Retail Investor
A retail investor is an individual (non-institutional) investor who buys and sells securities in smaller quantities for personal financial goals. SEBI and NSE track retail investor participation — India added 3–4 crore new Demat accounts annually from 2020–2024. Retail investors get special allocation (35% minimum) in IPOs and OFS transactions.
Rights and Obligations (F&O)
In options trading, the buyer has the right but no obligation; the seller (writer) has the obligation but no right to exit once a buyer exercises. In futures, both parties have mutual obligation. Understanding asymmetric rights and obligations in derivatives is fundamental — it explains why option buyers’ max loss is premium paid, while sellers face theoretically unlimited risk.
Rights Entitlement (RE)
Rights Entitlement is a tradeable instrument issued by companies before a rights issue — representing the right (but not obligation) to subscribe to new shares at a discounted price. SEBI introduced RE trading in 2020 to allow shareholders who don’t wish to exercise rights to sell their entitlements to interested buyers on the exchange, ensuring no value loss.
Rights Issue
A rights issue is when a company offers existing shareholders the right (but not obligation) to buy additional shares at a discounted price, in proportion to their existing holdings. It is a way to raise fresh capital from existing investors. Companies may use rights issues to fund expansion or reduce debt.
Rollover (F&O)
Rollover is the process of closing a near-month futures or options position and simultaneously opening the same position in the next month contract — effectively extending the trade. In India, NSE F&O contracts expire on the last Thursday of each month. High rollover data indicates strong conviction in a directional trade.
S&P 500
The S&P 500 (Standard & Poor’s 500) is the most widely followed stock market index in the world, tracking the performance of 500 large-cap US companies listed on NYSE or NASDAQ. Companies are selected by the S&P Index Committee based on market capitalisation (minimum ~$14.5 billion), financial viability (positive GAAP earnings over four consecutive quarters), adequate liquidity, and float (minimum 50% of shares publicly traded). The index is market-cap weighted — larger companies have disproportionately larger impact; the top 10 companies (Apple, Microsoft, NVIDIA, Amazon, Meta, Alphabet, Tesla, Berkshire, Eli Lilly, JPMorgan) collectively represent approximately 35% of the index. The S&P 500 represents approximately $40 trillion in aggregate market capitalisation — about 55-60% of global equity market value. It is the benchmark against which most US equity fund managers are measured and is the underlying for the world’s largest ETF by AUM (the SPDR S&P 500 ETF Trust, ticker SPY, with $500B+ AUM). The S&P 500’s long-term average annual total return (including dividends) is approximately 10-11% over nearly a century of data, making it the standard reference for passive investment returns. For Indian investors, S&P 500 exposure is accessible through international mutual funds (like Motilal Oswal S&P 500 Index Fund) and ETFs (India-domiciled funds investing in US equities). FEMA regulations cap overseas investments at $250,000 per person per year.
Scalping
Scalping is the most intense form of short-term trading, involving making dozens or hundreds of trades per day, each capturing tiny price movements — typically 5-20 ticks/points per trade — in highly liquid markets. Scalpers hold positions for seconds to minutes, never overnight, and rely on extremely small profit targets with very tight stop-losses. The profit per trade is minimal (₹200-500 per lot on Nifty), but the frequency of trades (50-100 per day) can accumulate significant total P&L. Scalping requires direct market access, ultra-low-latency execution, and often algorithmic tools. In Indian markets, scalping is most viable in Nifty and BankNifty futures and options, where bid-ask spreads are typically 0.5-1 point and thousands of contracts trade per second. Professional scalpers use Level 2 order book data (market depth), tape reading (watching the order flow in real time), and execution platforms that route orders directly to exchange matching engines. Transaction costs are the biggest enemy of scalping: at ₹20 per order × 200 orders per day = ₹4,000 in brokerage alone, plus STT, exchange charges, and GST — totalling 0.05-0.08% per round trip. A scalper must generate enough gross profit to cover these costs before turning a net profit. Scalping is closely related to High-Frequency Trading (HFT) — institutional algorithmic scalping using co-location servers (computers physically located within exchange data centres for nanosecond execution advantages). NSE’s co-location controversy (2015-2019) involved allegations that certain HFT firms received preferential access, distorting the level playing field for retail scalpers.
SEBI (Securities and Exchange Board of India)
SEBI is India’s capital markets regulator established in 1988 (statutory powers from 1992). It regulates stock exchanges, brokers, mutual funds, investment advisors, and listed companies. SEBI’s mandate is to protect investor interests, promote market development, and regulate securities markets through registration, disclosure, and enforcement.
SEBI Investor Charter
SEBI’s Investor Charter (2021) codifies the rights of securities market investors — including the right to receive information, right to register complaints, right to expect timely grievance redressal, and right to investor education. Every SEBI-registered intermediary must display the Investor Charter and submit monthly complaint resolution data.
Sensex
The Sensex (Sensitive Index) is the benchmark stock market index of the Bombay Stock Exchange (BSE), comprising 30 of the largest and most actively traded companies in India. It was established in 1979 with a base value of 100. As of 2024, Sensex crossed 80,000 — representing 80,000% growth from its 1979 base.
Settlement (Stock Market)
Settlement is the process by which a buyer pays for purchased securities and a seller delivers them, completing a stock market transaction. India moved to T+1 (Trade + 1 business day) settlement in January 2023 from T+2. NSE and BSE use a clearing corporation (NSCCL, ICCL) as the central counterparty to guarantee settlement.
Short Selling
Short selling is borrowing shares you don’t own, selling them in the market, and later buying them at a lower price to return them — profiting from the price fall. In India, SEBI allows short selling through SLB (Securities Lending and Borrowing) mechanism. Intraday ‘short and cover’ is common; overnight short positions require SLB.
Small Cap vs Mid Cap vs Large Cap
SEBI classifies stocks by market cap: Large Cap = top 100 companies by market cap; Mid Cap = 101st to 250th; Small Cap = 251st onwards. Classification updates every 6 months. Funds must hold minimum 65–80% in respective category.
Sovereign Wealth Fund
A Sovereign Wealth Fund (SWF) is a state-owned investment fund that invests a country’s surplus wealth — typically generated from commodity exports (oil, gas, copper) or persistent trade surpluses — in global financial assets to preserve and grow national wealth for future generations or stabilize government revenues. SWFs are distinct from central bank foreign exchange reserves (which are held primarily for liquidity and currency management) in that they actively invest in equities, real estate, private equity, infrastructure, and alternative assets worldwide, seeking higher long-term returns. As of 2024, global SWF assets under management exceed $10 trillion. The largest SWFs include Norway’s Government Pension Fund Global (approximately $1.7 trillion — the world’s largest, funded by North Sea oil revenues), the Abu Dhabi Investment Authority — ADIA ($790 billion), the China Investment Corporation — CIC ($1.35 trillion), the Kuwait Investment Authority ($750 billion), and Singapore’s GIC ($770 billion) and Temasek Holdings ($380 billion). SWFs operate under varying governance frameworks: some are highly transparent (Norway publishes full portfolio holdings), while others are opaque (Gulf SWFs). The Santiago Principles, adopted in 2008 by the International Working Group of Sovereign Wealth Funds, established voluntary transparency and governance standards. India does not have a SWF of the scale of Norway or the Gulf states, primarily because India runs a persistent current account deficit rather than a surplus — it is a capital-importing country. However, the National Investment and Infrastructure Fund (NIIF), established in 2015, functions as a quasi-SWF focused on infrastructure investment in India, with the government holding a 49% stake. NIIF manages approximately $4.9 billion across three funds. More relevantly for India, SWFs from Abu Dhabi (ADIA), Singapore (GIC, Temasek), and Saudi Arabia (PIF) are among the largest foreign investors in Indian equities, startups, and infrastructure — making their investment decisions critical for Indian capital markets.
Spread (Trading)
In trading, spread refers to: (1) Bid-Ask Spread — difference between buying price (ask) and selling price (bid) of a security; (2) Credit Spread — yield difference between corporate bond and G-Sec; (3) Options Spread Strategy — simultaneous buying and selling of options at different strikes. Tighter spreads indicate better liquidity; wider spreads increase trading cost.
Stock Split
A stock split is a corporate action in which a company divides its existing shares into multiple shares, thereby increasing the number of outstanding shares while proportionally reducing the price per share. The total market capitalisation remains unchanged immediately after the split. A common split ratio is 1:2 (one share becomes two, price halves), 1:5, or 1:10. In India, stock splits require shareholder approval and are announced via stock exchange filings on NSE and BSE, followed by a record date after which the adjustment takes effect. The face value of the share is also reduced proportionally — for example, a share with Rs 10 face value undergoing a 1:5 split will have a new face value of Rs 2. Companies typically opt for stock splits when their share price has risen to levels that may deter retail investors from purchasing even a single share. A share trading at Rs 10,000 might seem inaccessible to small investors, but post a 1:10 split, it trades at Rs 1,000, broadening the investor base and improving liquidity. Improved liquidity is a key motivation — more shares outstanding at a lower price means more buyers and sellers can participate, tightening the bid-ask spread and reducing price impact for large trades. There is also a psychological component: investors perceive lower-priced shares as more affordable, which can drive short-term demand post-split. It is important to understand what a stock split does not change: the company’s fundamentals, earnings, debt levels, and intrinsic value remain identical pre- and post-split. Analysts adjust earnings per share (EPS), book value per share, and price-to-earnings (P/E) ratios proportionally. In India, the exchange and depositories (NSDL/CDSL) coordinate with the company’s registrar and transfer agent to ensure demat accounts are credited with the additional shares on the ex-date. Investors sometimes confuse stock splits with bonus shares — while both increase the number of shares and reduce the price proportionally, a bonus issue involves a transfer from the company’s free reserves, whereas a split is purely a restructuring of the existing share capital.
Stop Loss Order
A stop loss order is an instruction placed with a broker to automatically sell (or buy, in the case of a short position) a security when it reaches a specified price, thereby limiting the investor’s loss on a position. In Indian equity markets, stop loss orders can be placed on NSE and BSE through all major trading platforms. There are two primary types: stop loss market orders (SL-M) — which trigger a market order to sell immediately when the stop price is hit — and stop loss limit orders (SL) — which trigger a limit sell order at a specified price when the stop price is reached. SL-M orders guarantee execution but not price; SL orders guarantee the minimum price but may not execute if the stock gaps through the limit. The mechanics and placement of stop loss orders require careful thought. The stop price should be set based on the investor’s risk tolerance, the stock’s volatility (often measured by Average True Range or ATR), and the technical support levels. For example, if a stock is bought at Rs 1,000 and trades with an ATR of Rs 30, placing a stop loss at Rs 970 (one ATR below entry) limits the loss to Rs 30 per share or 3%. Placing it too tight risks premature triggering from normal intraday volatility (“stop hunting” in volatile markets), while placing it too wide exposes the investor to larger-than-acceptable losses. Trailing stop losses, which automatically adjust upward as the stock price rises, allow investors to lock in profits while still protecting against reversals. Most Indian trading platforms (Zerodha Kite, Upstox, Angel One) support GTT (Good Till Triggered) orders, which function as persistent stop losses valid until triggered or cancelled. Stop loss discipline is one of the most psychologically challenging aspects of trading. Research on retail investor behaviour consistently shows that investors hold onto losing positions far longer than winning ones — a behavioural bias known as the disposition effect. A stop loss mechanises the exit decision, removing emotional hesitation. In India’s high-volatility mid- and small-cap segments, where stocks can fall 10–20% in a single session on adverse news, stop losses are essential risk management tools. Professional traders and fund managers integrate stop losses with position sizing rules: typically risking no more than 1–2% of total portfolio capital on any single trade, using the stop loss distance to determine the appropriate position size.
Swing Trade Risk/Reward
Risk/Reward ratio (R:R) is the fundamental metric for evaluating whether a trading setup is worth taking. It compares the potential profit (reward) on a trade to the potential loss (risk) if the stop-loss is hit. A 1:3 R:R means risking ₹1 to potentially earn ₹3. Consistently maintaining positive R:R ratios (above 1:2) allows a trader to be profitable even with a win rate below 50% — a trader winning only 40% of trades can be profitable with an average 1:3 R:R. This mathematical reality is the foundation of professional trading: position management and R:R optimisation matter more than “being right.” Calculating R:R before every trade is non-negotiable for systematic traders. Risk = Entry price – Stop loss price. Reward = Target price – Entry price. If a trade has a risk of ₹50/share and a potential reward of ₹200/share, R:R = 1:4. Only trades with R:R above a minimum threshold (typically 1:2 or 1:3) should be taken. This filter alone eliminates the majority of poor-quality setups. R:R interacts with win rate through the Expectancy formula: Expectancy = (Win Rate × Average Win) – (Loss Rate × Average Loss). A positive expectancy means the strategy produces profit over a large sample of trades. Professional traders focus obsessively on positive expectancy through consistent R:R and controlled psychology.
Swing Trading
Swing trading is a medium-term trading strategy where positions are held for 2 days to several weeks — attempting to capture ‘swings’ (multi-day price movements) in a stock. Unlike intraday (squared off same day) or delivery investing (months/years), swing traders use technical analysis to identify entry and exit points based on price patterns.
T+1 Settlement
T+1 settlement means stock transactions in India are settled within 1 business day after the trade date. India moved to T+1 in January 2023 — the first major market globally to do so. Faster settlement means investors receive funds from stock sales sooner and shares are delivered to buyers faster, reducing counterparty risk.
Takeover (Acquisition)
A takeover is when one company acquires a controlling stake (26%+ for mandatory open offer) in another company through purchase of shares from the market or through a direct agreement. SEBI’s Takeover Code mandates an open offer to buy at least 26% shares from public shareholders at a fair price when a 25%+ stake is acquired.
Technical Analysis
Technical analysis is the study of past price patterns, volume, and chart indicators to predict future price movements — without analysing company fundamentals. Tools include: moving averages, RSI (Relative Strength Index), MACD, candlestick patterns, support/resistance levels, and Fibonacci retracements. Popular for short-term trading; less relevant for long-term investing.
Technical Indicator
Technical indicators are mathematical calculations based on historical price, volume, or open interest data — used by traders to identify trends, momentum, and reversal signals. Common indicators: Moving Average (trend), RSI (momentum/overbought-oversold), MACD (trend change), Bollinger Bands (volatility), and Stochastic Oscillator. Indicators lag price action and work best in combination.
Tokyo Stock Exchange & Nikkei 225
The Tokyo Stock Exchange (TSE), now part of Japan Exchange Group (JPX), is the world’s third-largest stock exchange by market capitalisation (approximately $6-7 trillion). The Nikkei 225 is Japan’s most recognised stock index, tracking 225 large companies across 36 sectors listed on TSE, updated annually by Nikon Keizai Shimbun (Japan’s leading financial newspaper). Notable Nikkei components include Toyota, Sony, SoftBank, Nintendo, Keyence, Fanuc, and Fast Retailing (Uniqlo). Japan’s equity market is globally significant for its role in the “Yen carry trade” — investors borrow cheaply in low-rate yen and invest in higher-yielding assets globally. Japan’s central bank, the Bank of Japan (BoJ), has operated the world’s most extreme monetary policy for three decades: near-zero (and even negative) interest rates since the 1990s and yield curve control (YCC) — targeting the 10-year Japanese government bond yield within a specific range (+/-0.5%, later +/-1%). This policy created the world’s largest QE programme relative to GDP. In 2023-2024, as the BoJ gradually began normalising rates (first rate hike since 2007), the yen strengthened, unwinding yen carry trades and causing global market volatility. The Nikkei 225 finally recovered its 1989 bubble peak of 38,915 in February 2024 — 34 years after the original peak — making Japan’s bubble deflation the most dramatic and prolonged in financial history. Warren Buffett’s Berkshire Hathaway made significant investments in five Japanese trading houses (Itochu, Marubeni, Mitsubishi, Mitsui, Sumitomo) in 2020, generating exceptional returns.
Total Return Index (TRI)
TRI is a stock market index that measures total returns including both price appreciation AND dividend reinvestment — unlike price-only indices (Nifty 50, Sensex). SEBI mandates that mutual funds benchmark performance against TRI (not price index) to account for dividend income in fair performance comparison. Nifty 50 TRI typically outperforms Nifty 50 by 1–1.5% annually.
VIX (Volatility Index)
India VIX (Volatility Index) measures market expectations of near-term volatility in Nifty 50 based on options prices. A high VIX (above 20–25) signals fear and uncertainty; a low VIX (below 15) signals market calm. VIX is often called the ‘fear index’ — it typically spikes during market crashes and subsides during bull runs.
Yen Carry Trade
The yen carry trade is a global macro strategy where investors borrow Japanese yen at extremely low interest rates (near zero or even negative in Japan for over a decade) and use the proceeds to invest in higher-yielding assets in other currencies — US Treasuries, emerging market bonds, equities, or commodities. The trade profits from the interest rate differential (the “carry”) between Japan’s near-zero rates and the higher rates available in the target investment. For example: borrow yen at 0.1%, convert to USD, buy US Treasuries at 5% — the 4.9% differential is the carry (before currency risk). The carry trade is highly profitable when: (1) The yen remains stable or weakens (the borrowed currency’s depreciation reduces repayment cost). (2) The target asset performs well. (3) Volatility is low. The critical risk: when yen strengthens unexpectedly (yen appreciation), carry traders face losses on currency conversion that can exceed the interest rate differential. “Carry trade unwind” events occur when global risk aversion spikes — investors rush to repay yen loans, buying yen (strengthening it further) and selling target assets simultaneously, creating self-reinforcing market dislocations. The yen carry trade’s estimated scale is hundreds of billions to trillions of dollars — its unwind episodes (1998, 2008, 2024) have caused some of the most violent short-term market movements in global financial history.
Zerodha / Discount Broker
A discount broker is a brokerage firm that offers trading and investment services at significantly lower commissions than full-service brokers — primarily through digital platforms. Zerodha (India’s first and largest discount broker) charges ₹0 for equity delivery and ₹20 flat per order for intraday/F&O — versus 0.5% of trade value at full-service brokers like Sharekhan.
Where market terms are taught and applied
Five courses cover this segment in seventy-eight lessons. These are the entry points.
Search all 928 terms, with worked examples
The 108 definitions above are the stock markets and trading set. The interactive glossary holds all 928 across every topic, with instant search and a worked example for each one showing the term applied to real Indian numbers.
Open the interactive glossary →The other fourteen glossary topics
Every topic follows the same shape: the terms A to Z with a full definition, then the Learn page, tools and worked scenarios where those terms are actually used.