How Does Stock Market Work in India

A stock exchange is where investors buy and sell shares and other listed securities. In India, the BSE and NSE use electronic systems to match trades under SEBI's regulation.

Key points:

• Companies raise capital by listing their shares through an Initial Public Offering (IPO).
• Investors buy and sell listed securities based on market demand and supply.
• Trading follows four key stages: listing, order matching, price discovery, and clearing and settlement.
• The BSE, established in 1875, is Asia's oldest stock exchange.
• The NSE, established in 1992, introduced an advanced electronic trading platform in India.
• Stock exchanges also support trading in bonds, exchange-traded funds (ETFs), derivatives, and other listed securities.

A stock exchange is an organised marketplace where publicly listed companies issue and trade securities such as shares and bonds. It provides a regulated environment where buyers and sellers can transact through standardised trading systems.

Besides individual investors, participants include institutional investors such as mutual funds, pension funds, insurance companies, and financial institutions. Public companies also participate by listing their shares to raise capital from investors.

A stock exchange plays an important role in the economy by improving access to investment opportunities and helping businesses secure long-term funding. It also promotes transparency by enforcing listing requirements and trading regulations.

Some exchanges also facilitate trading in exchange-traded products (ETPs), exchange-traded funds (ETFs), derivatives, debt instruments, and other eligible securities alongside equities.

The terms stock market and stock exchange are often used interchangeably, but they refer to different concepts.

The stock market is the broader financial ecosystem where investors buy and sell securities. It includes multiple exchanges, market participants, brokers, regulators, and trading mechanisms operating together.

A stock exchange is one part of the stock market. It is a specific, regulated platform where listed securities are traded according to defined rules and procedures.

The table below highlights the key differences.

Understanding this distinction helps investors recognise that stock exchanges provide the infrastructure through which the broader stock market operates.

A stock exchange follows a structured process that enables companies to raise funds and investors to trade securities efficiently. Every transaction passes through multiple stages before ownership changes hands.

Listing of securities

A company must satisfy the eligibility criteria prescribed by the stock exchange before its shares can be listed for public trading. Listing allows the company to raise capital by offering ownership to investors through an Initial Public Offering (IPO).

After listing, investors can buy and sell the company's shares on the exchange during market hours.

Trading mechanism

Investors place buy and sell orders through registered stockbrokers. These orders are transmitted electronically to the stock exchange, where an automated order-matching system identifies compatible trades.

Indian stock exchanges primarily use electronic trading systems that improve speed, transparency, and operational efficiency.

Price discovery

The market determines the price of a security through the interaction of demand and supply. When buying interest exceeds selling interest, prices may rise. Conversely, prices may fall when more investors are willing to sell than buy.

This continuous process is known as price discovery, helping securities trade at market-driven prices throughout the trading session.

Clearing and settlement

Once a trade is executed, it enters the clearing and settlement process. During this stage, securities are transferred to the buyer's account, while the corresponding payment is transferred to the seller.

This process helps ensure that every completed trade is settled accurately and securely according to the exchange's settlement framework.

Stock exchange workflow at a glance

This structured workflow enables stock exchanges to facilitate transparent trading while supporting efficient capital formation and investor participation.

Stock exchanges operate in many countries and provide organised marketplaces for trading listed securities. While their size, listed companies, and trading volumes differ, they all support capital formation and investment by connecting companies with investors.

The table below highlights some of the world's largest stock exchanges and their key characteristics.

Although these exchanges operate under different regulatory frameworks, they all aim to provide transparent trading, efficient price discovery, and investor protection.

Also read:Different types of stock trading

India has two principal stock exchanges that facilitate trading in listed securities:

• Bombay Stock Exchange (BSE)
• National Stock Exchange (NSE)

Both exchanges enable companies to raise capital and provide investors with access to equities, debt securities, exchange-traded funds (ETFs), derivatives, and other eligible financial instruments. They also operate under the regulatory oversight of the Securities and Exchange Board of India (SEBI).

Bombay Stock Exchange (BSE)

Established in 1875, the Bombay Stock Exchange (BSE) is Asia's oldest stock exchange and one of the world's longest-operating securities markets.

The exchange has more than 5,300 listed companies, making it one of the world's largest exchanges by the number of listed companies. It has played an important role in helping Indian businesses raise capital for growth and expansion.

BSE at a glance

Key features of the BSE

• The BSE SENSEX tracks the performance of 30 large and financially established companies listed on the exchange.
• Investors can trade various financial instruments, including equities, debt securities, derivatives, mutual funds, ETFs, and other eligible securities.
• The exchange introduced the BSE On-Line Trading (BOLT) system to improve trading efficiency, transparency, and market accessibility.
• BSE-listed companies' combined market capitalisation crossed US$1 trillion in 2007 and surpassed US$5 trillion for the first time in 2024.

National Stock Exchange (NSE)

The National Stock Exchange (NSE) was established in 1992 and introduced an electronic trading system that transformed securities trading in India.

Today, the exchange facilitates trading across multiple asset classes, including equities, derivatives, debt securities, exchange-traded funds (ETFs), Real Estate Investment Trusts (REITs), and other exchange-traded products.

NSE at a glance

Key features of the NSE

• The NIFTY 50 represents 50 large companies across different sectors and accounted for approximately 53.7% of the NSE's free-float market capitalisation as of March 2026.
• The NSE is recognised for its fully electronic order-matching system, which has improved market efficiency, transparency, and accessibility.
• Investors can trade equities, derivatives, debt securities, ETFs, REITs, and other eligible financial products. In May 2026, the exchange also introduced Electronic Gold Receipts (EGRs) as a new exchange-traded digital gold segment.
• The NSE is the world's largest derivatives exchange by the number of contracts traded, reflecting its significant role in global derivatives markets.

Stock exchanges have evolved over centuries and continue to play a significant role in global financial markets. Here are some notable facts.

These examples show how stock exchanges have developed over time while adapting to technological and economic changes.

A stock exchange provides a regulated platform where companies raise capital and investors trade listed securities through an organised marketplace. In India, the BSE and NSE use electronic trading systems that support transparent price discovery, efficient order matching, and secure settlement. Regulated by the Securities and Exchange Board of India (SEBI), these exchanges contribute to investor protection, market integrity, and economic growth. Understanding how a stock exchange works can help you better understand the functioning of India's capital markets before participating in them.