What is NSE? National Stock Exchange of India

The History and Origin of NSE

To appreciate why the National Stock Exchange matters so much, it helps to understand the world it was created to replace. Before NSE came into existence, Indian stock trading was largely conducted on regional exchanges, the most prominent of which was the Bombay Stock Exchange, established as far back as 1875. The BSE, like most exchanges of its era, used an open-outcry system where brokers and jobbers would physically gather on a trading floor and shout out bids and offers. While this system had served its purpose for decades, it came with serious drawbacks: limited geographic reach, poor price transparency, high transaction costs, rampant broker malpractice, and a near-complete exclusion of retail investors who lived outside major cities.

The Harshad Mehta securities scam of 1992 was a watershed moment. It exposed just how deeply flawed India's financial infrastructure was, revealing how manipulative practices could inflate stock prices to absurd levels before the entire edifice collapsed, devastating ordinary investors. The government, the Reserve Bank of India, and financial sector reformers recognised that systemic change was essential.

In 1992, the National Stock Exchange of India Limited was incorporated as a tax-paying company. It was promoted by a group of leading financial institutions, including the Industrial Development Bank of India, the Life Insurance Corporation of India, and several other public sector entities. Crucially, unlike the BSE, which was a broker-owned association, the NSE was structured as a demutualised exchange from its very inception. This meant ownership, management, and trading membership were separated - a structural safeguard that reduced conflicts of interest.

NSE received recognition from SEBI, the Securities and Exchange Board of India, in April 1993 under the Securities Contracts (Regulation) Act, 1956. It commenced operations in the Wholesale Debt Market segment in June 1994, followed by the Capital Market segment in November 1994. The launch of the Futures and Options segment came later in June 2000, and this would eventually become the exchange's most traded segment by volume.

The impact was immediate and dramatic. By offering a fully computerised, order-driven, anonymous trading system accessible through terminals spread across India, the NSE democratised access to the stock market. A broker in Patna, Coimbatore, or Guwahati could now access the same prices at the same time as a broker in Mumbai. The concept of a "local" price for a blue-chip stock became obsolete virtually overnight. Within a few years, NSE had overtaken the BSE in trading volumes, a position it has broadly maintained ever since.

The establishment of the National Securities Depository Limited (NSDL) in 1996, promoted partly by NSE, further strengthened the ecosystem by enabling electronic holding of securities, eliminating the delays and forgery risks associated with physical share certificates. This combination of electronic trading and electronic settlement was transformative for Indian markets and laid the groundwork for the retail investing revolution that would follow in subsequent decades.

How NSE is Structured and Governed

The NSE operates as a demutualised, publicly unlisted company. As of the time of writing, its major shareholders include domestic financial institutions, foreign portfolio investors, and other entities, though the exchange itself is not listed on any Indian stock exchange - a somewhat ironic situation given that it facilitates the listing and trading of hundreds of other companies. There have been periodic discussions and regulatory pushes towards listing the NSE, and investors should refer to the latest developments on this front.

At the top of the governance structure sits the Board of Directors, which includes public interest directors, shareholder directors, and professional management. SEBI exercises oversight over the exchange's operations, rules, and systemic risk mechanisms. This regulatory relationship is fundamental - the NSE is a market infrastructure institution, and its smooth functioning is considered essential to national financial stability.

The exchange operates through several key subsidiaries and affiliated entities that together form an integrated ecosystem. NSE Indices Limited (formerly known as India Index Services and Products Limited or IISL) is responsible for designing, maintaining, and licensing the Nifty family of indices, which are used as benchmarks by mutual funds, ETFs, and as underlying instruments for derivatives. NSE Clearing Limited (formerly National Securities Clearing Corporation Limited or NSCCL) acts as the central counterparty for all trades executed on the exchange, providing a guarantee of settlement and thereby significantly reducing counterparty risk. NSE Data and Analytics Limited manages data products and analytics services.

The exchange's technology infrastructure is among the most sophisticated in Asia. Its trading system, known historically as the National Exchange for Automated Trading (NEAT) and subsequently evolved into newer platforms, handles millions of orders per day with extremely low latency. The matching engine follows a strict price-time priority rule: at a given price, the order that arrived first gets matched first. This simple, transparent rule replaced the opaque, relationship-driven allocation that characterised older systems.

Membership of the exchange is open to entities that meet SEBI's and NSE's eligibility criteria, including capital adequacy, infrastructure, and fit-and-proper standards. Trading members are the brokers through whom investors place their buy and sell orders. Clearing members, who may or may not also be trading members, are responsible for settling the trades. Retail investors do not trade directly on the exchange - they route their orders through registered brokers, whether through phone calls, online portals, or mobile applications.

Risk management is a central pillar of NSE's operating framework. The exchange imposes daily price bands (also called circuit breakers or price limits) on individual securities to prevent extreme intraday volatility. Market-wide circuit breakers, triggered by sharp movements in the Nifty 50 or Sensex, can pause trading across all equity and derivative segments simultaneously, giving markets time to stabilise. Margins - upfront collateral deposits - are collected from trading members on derivative positions to ensure that losses can be absorbed without systemic contagion. These mechanisms, continuously refined over the years, have helped Indian markets weather several global and domestic shocks with relatively limited disruption.

Key Trading Segments on NSE

One of NSE's most important features is that it is not a single-product marketplace. It operates multiple distinct trading segments, each catering to different types of financial instruments and market participants. Understanding these segments helps investors appreciate the full scope of what NSE does.

The Capital Market (CM) Segment is where ordinary shares, preference shares, and exchange-traded funds (ETFs) are bought and sold. When a retail investor buys shares of a company listed on NSE, the transaction almost certainly takes place in this segment. Settlement in the capital market segment currently follows a T+1 cycle, meaning that shares and funds are exchanged one business day after the trade date, making Indian markets among the fastest-settling major equity markets in the world. This shift to T+1 settlement, completed in 2023, was a significant modernisation milestone.

The Futures and Options (F&O) Segment, often simply called the derivatives segment, is where contracts whose value is derived from an underlying asset - such as the Nifty 50 index, individual stocks, or sector indices - are traded. Equity futures and options contracts are available on the Nifty 50, the Bank Nifty, the Nifty Financial Services index, and a defined list of individual stocks that meet SEBI's criteria for derivatives eligibility. By volume of contracts traded, this is the largest segment on NSE and, for extended periods, has made NSE one of the world's busiest derivatives exchanges. Trading in derivatives requires a thorough understanding of the risks involved, as leveraged positions can result in losses that exceed the initial margin deposited. SEBI regularly reviews the rules governing this segment, including lot sizes, margin requirements, and the list of eligible stocks.

The Debt Market Segment facilitates trading in government securities, treasury bills, bonds issued by public sector undertakings, and other fixed-income instruments. While the retail participation in this segment has historically been lower compared to equities, the introduction of the RBI Retail Direct scheme and various SEBI initiatives to deepen the corporate bond market have been gradually changing this picture.

The Currency Derivatives Segment allows market participants to trade futures and options on currency pairs such as USD/INR, EUR/INR, GBP/INR, and JPY/INR. Importers and exporters use these contracts to hedge against exchange rate risk, while traders use them for speculative purposes. NSE competes with the BSE and the Metropolitan Stock Exchange of India in this segment.

The Interest Rate Derivatives Segment enables trading in instruments that allow hedging or speculating on changes in interest rates, primarily through futures contracts on government bonds. This segment is more relevant to institutional participants such as banks, insurance companies, and large corporates.

The Sovereign Gold Bond (SGB) and ETF trading also happens on NSE's capital market platform, giving investors exposure to gold prices without the need to hold physical gold.

Each segment operates under its own set of rules, trading hours, margin requirements, and settlement procedures, all of which are defined by the exchange in consultation with and under the oversight of SEBI.

NSE Trading Hours and Market Timings

Understanding when the NSE is open for trading is fundamental for anyone participating in Indian financial markets. NSE operates on all weekdays except for officially declared market holidays, which are announced in advance on both the NSE website and by SEBI. Market holidays typically include national holidays and are published as a list at the beginning of each calendar year.

For the Capital Market and Futures and Options segments, the regular trading session runs from 9:15 AM to 3:30 PM Indian Standard Time (IST). However, trading activity actually begins earlier with a pre-open session that runs from 9:00 AM to 9:15 AM. During this pre-open session, orders can be entered, modified, or cancelled, but they are not matched immediately. Instead, they accumulate and the exchange uses a call auction mechanism to determine the opening price for each security - the price at which the maximum volume of orders can be matched. This process helps reduce the extreme volatility that would otherwise characterise the opening moments of trading.

The bulk deal window, where large transactions meeting a defined threshold are required to be disclosed separately, operates during specific windows in the trading day. Similarly, the block deal window, used for negotiated large trades between institutional participants, has specific timings.

For the Currency Derivatives Segment, trading hours are extended compared to the equity segments, running from 9:00 AM to 5:00 PM IST to better align with global currency market activity, particularly covering the period when European markets open.

NSE also operates a commodity derivatives segment through its subsidiary, though the primary commodity exchanges in India are MCX (Multi Commodity Exchange) for metals and energy, and NCDEX (National Commodity and Derivatives Exchange) for agricultural commodities.

After-market orders (AMOs) can be placed with many brokers outside of regular trading hours, but these orders are only submitted to the exchange when the next trading session begins. This is a convenience feature offered by brokers, not a separate exchange mechanism.

Investors should note that trading hours and session structures can be revised by SEBI or the exchange based on market conditions, global developments, or regulatory needs. Always verify the current timings from the official NSE website or your broker's platform before making time-sensitive decisions.

Nifty 50 and Other NSE Indices

If the NSE is the body, the Nifty 50 is arguably its most visible heartbeat. The Nifty 50 is a market capitalisation-weighted index comprising fifty of the most liquid and financially sound companies listed on NSE, spanning sectors from banking and technology to energy and fast-moving consumer goods. It serves as the primary benchmark for equity markets in India and is used by mutual funds to measure performance, by asset managers to create index funds and ETFs, and by the derivatives market as the underlying for the most heavily traded futures and options contracts in the country.

The Nifty 50 is calculated using a free-float market capitalisation methodology. Free float refers to the proportion of shares that are available for public trading, excluding promoter holdings, government stakes, and other strategic holdings. This ensures that the index reflects the actual investable universe for market participants rather than the total theoretical value of companies. The index is reviewed semi-annually by NSE Indices Limited, which adds or removes companies based on criteria including trading frequency, impact cost (a measure of liquidity), and free-float market capitalisation.

Beyond the Nifty 50, NSE Indices Limited maintains a rich family of indices catering to various investment needs. The Nifty Next 50 covers the companies ranked 51 to 100 by free-float market capitalisation, often serving as a feeder for the Nifty 50 as companies graduate in and out. The Nifty 100 and Nifty 200 provide broader market exposure. The Nifty Midcap 150, Nifty Smallcap 250, and Nifty Microcap 250 track different size segments of the market.

Sectoral indices are particularly important for investors wanting to understand how a specific part of the economy is faring. The Nifty Bank, Nifty IT, Nifty Pharma, Nifty FMCG, Nifty Auto, Nifty Realty, and Nifty Energy indices, among others, allow investors to track sector-specific trends. The Nifty Bank index, in particular, is the second most important derivatives underlying on NSE after the Nifty 50, with enormous daily volumes in Bank Nifty futures and options.

Thematic and strategy indices have also proliferated. There are indices tracking dividend yield strategies, quality factors, low volatility stocks, ESG (Environmental, Social, and Governance) criteria, and many more. These form the basis for a growing range of passively managed investment products.

The Nifty 50 is often contrasted with the BSE Sensex, which tracks 30 companies listed on the Bombay Stock Exchange. Both indices broadly track the same large-cap Indian equity market, and on most days they move in the same direction with similar magnitude. The difference lies in their composition, calculation methodology details, and the exchanges they represent. Financial news in India routinely quotes both, and understanding their relationship helps investors contextualise daily market commentary.

The Listing Process on NSE

For a company to have its shares traded on NSE, it must first go through a formal listing process. This is separate from and follows the primary market process of issuing shares to the public through an Initial Public Offering (IPO) or, in some cases, through a direct listing or other approved mechanisms.

When a company decides to raise capital from the public through an IPO, it works with merchant bankers and legal advisors to prepare a Draft Red Herring Prospectus (DRHP), which is filed with SEBI for review and observations. SEBI's scrutiny is focused on ensuring adequate disclosure - it does not validate the quality of the business or the fairness of the price. Once SEBI provides its observations and the company addresses them, the final prospectus is published, the IPO opens for subscription, and shares are allotted to successful applicants.

Following allotment, the company applies to NSE (and typically also to BSE) for listing. NSE has its own eligibility criteria beyond SEBI's disclosure requirements, covering aspects such as minimum paid-up capital, a satisfactory track record, compliance with corporate governance norms, and minimum public shareholding. Once the listing application is approved, the company's shares begin trading on the exchange from a specified listing date - typically within a few days of the close of the IPO.

Companies can also list on NSE's SME platform, called NSE Emerge, which is designed specifically for small and medium-sized enterprises that may not yet meet the criteria for listing on the main board. The eligibility requirements for NSE Emerge are somewhat less stringent, making it accessible to younger, growing companies that want to access public capital markets. Investors in SME-listed companies should be aware that liquidity may be considerably lower than on the main board.

Once listed, companies must comply with ongoing obligations under SEBI's Listing Obligations and Disclosure Requirements (LODR) Regulations. These include timely filing of quarterly and annual financial results, disclosure of material events (such as mergers, acquisitions, changes in key management, and large orders), maintenance of minimum public shareholding, and adherence to corporate governance norms. Non-compliance can attract penalties from SEBI and action from the exchange, including suspension of trading in the company's shares.

Delisting - the process by which a company's shares are removed from trading on an exchange - can happen voluntarily (when a promoter wants to take the company private) or involuntarily (as a regulatory action). SEBI's delisting regulations specify the price discovery mechanism and the minimum acceptance threshold required for a voluntary delisting to succeed, protecting minority shareholders in the process.

Settlement, Clearing, and Investor Protection

The machinery that ensures every trade executed on NSE is completed reliably and on time is the settlement and clearing infrastructure. When you buy 100 shares of a company on NSE, you are entering into a contract with an anonymous counterparty on the other side. You do not know who sold you those shares, and that seller does not know who bought them. Yet you are certain you will receive the shares, and the seller is certain they will receive the money. This certainty is provided by NSE Clearing Limited, which acts as the central counterparty (CCP) to every trade.

As a central counterparty, NSE Clearing interposes itself between every buyer and every seller the moment a trade is executed. Legally, it becomes the buyer to every seller and the seller to every buyer. This novation eliminates direct counterparty risk - you no longer need to worry about whether the other party will default, because NSE Clearing has assumed that obligation. NSE Clearing maintains several layers of financial resources - including margins collected from members, a settlement guarantee fund, and its own net worth - to honour settlement obligations even if a trading member defaults.

The current settlement cycle for equity trades (T+1) means that shares and funds are exchanged on the business day following the trade. This has important practical implications: if you sell shares today, the proceeds will be available in your linked bank account tomorrow. If you buy shares today, the shares will reflect in your demat account tomorrow. SEBI has been exploring the possibility of moving to an even faster T+0 or instantaneous settlement for certain segments, and by the time you read this, the regulatory landscape on settlement timelines may have evolved - always check the current rules.

Investor protection in the NSE ecosystem goes beyond clearing and settlement. The Investor Protection Fund (IPF), maintained by NSE, provides compensation to investors in cases where a trading member defaults and is unable to meet its obligations to clients. There are prescribed limits on the compensation payable per investor claim. Investors are encouraged to always maintain their securities in their own demat account rather than leaving them in a broker's pool account, to reduce exposure in the event of broker insolvency.

SEBI's Know Your Customer (KYC) requirements, enforced through the exchange and broker ecosystems, ensure that market participants are properly identified. The Central KYC Registry (CKYC) and systems like the KYC Registration Agencies (KRAs) facilitate a single, portable KYC across the financial system. Grievance redressal mechanisms include the SEBI Scores portal, where investors can register complaints against listed companies or brokers, and the NSE's own investor service centres.

The Securities Appellate Tribunal (SAT) provides an independent appellate forum for parties aggrieved by SEBI orders, ensuring that regulatory actions can be challenged through due legal process.

NSE vs BSE: Understanding the Difference

A question that comes up repeatedly among new investors is: what is the difference between NSE and BSE, and should I prefer one over the other? The short answer is that for most practical purposes, there is very little difference for a retail investor, because most large-cap stocks are listed on both exchanges and prices tend to be virtually identical due to arbitrage. But there are meaningful structural and historical differences worth understanding.

The Bombay Stock Exchange, established in 1875, is Asia's oldest stock exchange and one of the oldest in the world. It carries enormous historical significance and was, for much of its existence, the dominant marketplace for Indian equities. The BSE Sensex, comprising 30 stocks, is one of the most widely tracked indices in Indian financial history and remains a symbol of market sentiment in media coverage. The BSE has over five thousand listed companies - significantly more than NSE - making it the exchange of choice for listings by smaller companies.

The NSE, despite being far younger, surpassed the BSE in equity trading volumes relatively quickly after its launch. The reason was primarily technology and market design. NSE's nationwide electronic trading system offered better access, lower transaction costs, tighter bid-ask spreads, and greater transparency. This attracted order flow, and liquidity begat more liquidity - a self-reinforcing dynamic that established NSE's dominance in trading volumes.

In terms of derivatives trading, NSE is overwhelmingly dominant. The vast majority of equity futures and options trading in India happens on NSE, making Nifty 50 and Bank Nifty options among the most heavily traded derivative contracts in the entire world. BSE does operate a derivatives segment, but it captures a much smaller share of volumes.

For a retail investor, the exchange on which you trade is largely invisible - your broker routes your order to whichever exchange offers the best price, a practice known as smart order routing. Both exchanges use the same SEBI-regulated framework, the same NSDL/CDSL depository system for share custody, and the same T+1 settlement cycle. The shares you buy on NSE and the shares you buy on BSE are fungible - they represent the same ownership in the same company and sit in the same demat account.

Where the distinction matters practically is in a few specific scenarios: if a stock is listed only on BSE (common for smaller companies), you cannot buy it on NSE; if you are trading derivatives, you will almost certainly be on NSE; and some ETFs and index funds may track BSE indices (like the Sensex) rather than NSE indices (like the Nifty 50), giving you exposure to slightly different baskets of stocks.

Both exchanges are regulated by SEBI and are systemically important financial market infrastructure institutions. They compete with each other on technology, product innovation, and market quality - competition that ultimately benefits market participants.

NSE's Role in the Broader Indian Financial Ecosystem

The National Stock Exchange does not exist in isolation - it is an integral node in a larger web of financial institutions, regulators, and intermediaries that together constitute India's capital market ecosystem. Understanding these connections helps investors appreciate why events elsewhere in the financial system can have immediate repercussions in the stock market and vice versa.

SEBI is the primary regulator of securities markets in India, and NSE operates under a framework of rules, regulations, and circulars issued by SEBI. SEBI sets the broad parameters - margin requirements, lot sizes for derivatives, listing eligibility criteria, disclosure norms, and investor protection standards - while the exchange operationalises them through its own bye-laws, regulations, and circulars. This two-layer regulatory structure provides both national policy coherence and operational flexibility.

The Reserve Bank of India (RBI) intersects with equity markets primarily through its role in managing liquidity and interest rates. When the RBI adjusts the repo rate, it directly affects borrowing costs across the economy, which in turn influences corporate earnings expectations and stock valuations. RBI also regulates foreign investment flows into Indian equities through the Foreign Portfolio Investor (FPI) framework, and its policies on the current and capital accounts affect how much foreign capital can flow into and out of Indian markets.

The depositories - National Securities Depository Limited (NSDL) and Central Depository Services Limited (CDSL) - hold all securities traded on NSE in electronic, dematerialised form. Every investor must have a demat account with one of these depositories (accessed through a Depository Participant, which is typically the investor's broker or bank) to hold shares traded on NSE. The depositories maintain the definitive record of ownership and facilitate the transfer of securities in the settlement process.

Mutual funds and insurance companies are major institutional investors on NSE. The Association of Mutual Funds in India (AMFI) represents the mutual fund industry, whose combined equity assets represent a substantial share of NSE market capitalisation. Domestic institutional investors (DIIs), which include mutual funds, insurance companies, and pension funds, often provide a counterbalancing force to foreign portfolio investor (FPI) activity - buying when FPIs sell and vice versa.

FPIs - foreign entities registered with SEBI to invest in Indian markets - are another critical constituency. Their buying and selling patterns significantly influence daily market movements, particularly in large-cap stocks that are internationally well-known. The degree to which foreign investors are bullish or bearish on India as an investment destination is a major factor in NSE's performance over medium-term periods.

Clearing corporations, stock brokers, depository participants, custodians, registrar and transfer agents, investment advisors, research analysts, and portfolio managers - all of these entities interact with NSE's trading platform in different ways, forming an ecosystem that the exchange both depends on and serves. NSE itself invests heavily in market development activities - financial literacy programmes, outreach to new investor demographics, and technology investments - because a deeper, more educated investor base ultimately benefits the health of the marketplace.

The Indian government's policy initiatives also shape the NSE ecosystem significantly. Tax treatment of capital gains from equity investments, the Securities Transaction Tax (STT) levied on equity trades, and stamp duty on share transfers all affect the economics of investing and trading on NSE. Investors should refer to the latest Finance Act and consult a tax professional for current rates and implications, as these are subject to change with each Union Budget.

Technology, Innovation, and NSE's Global Standing

NSE's ascent to global prominence is inseparable from its identity as a technology-first institution. From its founding, NSE was designed around the principle that technology would be the great equaliser - democratising access to markets in a geographically vast and diverse country like India. This philosophy has driven continuous investment in trading infrastructure, data systems, and market surveillance tools.

The exchange's trading platform processes millions of order messages per day with very low latency, making it competitive with leading global exchanges. Co-location services, where algorithmic trading firms can place their servers physically within or adjacent to the NSE data centre in Mumbai to minimise the time delay between order generation and execution, are available to members. Algorithmic and high-frequency trading now accounts for a significant proportion of NSE's order flow, a development that SEBI and the exchange regulate carefully to ensure market fairness.

Market surveillance is another area where NSE employs sophisticated technology. The exchange's surveillance systems monitor trading patterns in real time, flagging unusual activity - sudden price spikes, abnormal volume, co-ordinated trading patterns - that might indicate manipulation or insider trading. Suspicious alerts are investigated by the exchange's surveillance team and, where warranted, referred to SEBI for enforcement action.

NSE's mobile and internet connectivity has facilitated the democratisation of investing. Today, millions of Indians trade and invest through mobile applications provided by their brokers, which connect to NSE's trading systems in milliseconds. The account opening process, once requiring weeks of physical paperwork, can now be completed digitally in a matter of hours through Aadhaar-based e-KYC. This technological infrastructure has been a major driver of the rapid growth in new investor registrations seen in recent years.

On a global scale, NSE regularly features in statistics published by the World Federation of Exchanges and the Futures Industry Association. Its equity derivatives segment, particularly the Nifty 50 options, has for several years ranked as one of the highest-volume derivatives products in the world by number of contracts. This reflects both the depth of domestic trader participation and the growing interest of international investors in Indian derivatives exposure.

NSE has also pursued international collaborations and cross-listing initiatives. The NSE IFSC exchange operates at GIFT City (Gujarat International Finance Tec-City) in Gandhinagar, Gujarat - India's dedicated international financial services centre - and facilitates trading in offshore instruments including GIFT Nifty futures (the successor to SGX Nifty, which previously traded in Singapore). This allows international investors to gain Nifty 50 exposure during hours that overlap with Asian and European market sessions, even outside NSE's regular trading hours.

Looking forward, NSE continues to work on extending its product range, improving market microstructure, and navigating the evolving regulatory landscape. Proposed reforms in areas such as derivatives product design, settlement speed, and market making frameworks will shape the exchange's evolution. For investors, staying abreast of these developments through official NSE communications and SEBI circulars is a sound practice.

Example

Key benefits

How it works

1. 1
   Investor Opens Accounts

   A retail investor opens a demat account (to hold securities in electronic form) and a trading account (to place buy and sell orders) with a SEBI-registered broker who is a trading member of NSE.

2. 2
   Broker Connects to NSE

   The broker's trading platform is connected to NSE's trading system via an approved software interface; when the investor places an order, it is transmitted electronically to the exchange's matching engine.

3. 3
   Order Book Matching

   NSE's trading engine adds the incoming order to the electronic order book and matches it with the best available counter-order based on strict price-time priority - the best price first, and among orders at the same price, the earliest order first.

4. 4
   Trade Confirmation

   When a match is found, both the buyer's and the seller's brokers receive an instant trade confirmation. NSE Clearing Limited simultaneously becomes the central counterparty to the trade, guaranteeing settlement.

5. 5
   Margins and Risk Controls

   Throughout the trading day, NSE Clearing monitors open positions and collects margins from brokers to cover potential losses; circuit breakers on individual stocks and market-wide index triggers manage extreme volatility.

6. 6
   Settlement on T+1

   On the business day following the trade, funds flow from the buyer's account to the seller (via the clearing mechanism) and shares flow from the seller's demat account to the buyer's demat account through NSDL or CDSL.

7. 7
   Ongoing Disclosure and Surveillance

   Listed companies continuously disclose material information per SEBI LODR norms; NSE's surveillance systems monitor trading patterns and flag anomalies to ensure market integrity.

Key takeaways

Frequently asked questions

Related terms