What Is the Stock Market?
The stock market is an organised system where ownership in companies — called shares or equity — is bought and sold. In India, this system is electronic, regulated, and operates through three recognised stock exchanges.
When you place an order through a broker app like Zerodha or Groww, you are not trading directly with another person. Your order goes to a stock exchange, which matches it with a counterparty. The exchange records the trade, and a clearing corporation guarantees settlement.
How Does the Indian Stock Market Work?
Three institutions form the backbone of share market operations in India:
| Component | Role | Examples |
|---|---|---|
| Exchanges | Match buy and sell orders | NSE, BSE, MSE |
| Depositories | Hold shares in electronic form | NSDL, CDSL |
| Brokers | Provide market access to investors | Zerodha, Groww, Angel One |
- You open a demat account through a SEBI-registered broker.
- You place a buy or sell order — either a market order or a limit order.
- The exchange matches your order with a counterparty.
- Settlement happens on T+1: if you buy shares on Monday, they appear in your demat account by Tuesday.
For a deeper look at how orders flow through the system, see how the share market works.
What Is a Stock Exchange?
A stock exchange is the marketplace where trading happens. India has three SEBI-recognised exchanges:
- National Stock Exchange (NSE): The largest by volume. Its benchmark index is the Nifty 50, a basket of 50 large-cap stocks.
- Bombay Stock Exchange (BSE): The oldest stock exchange in India, established in 1875. Its benchmark is the Sensex, comprising 30 stocks.
- Metropolitan Stock Exchange (MSE): The third exchange, currently in a relaunch phase with limited trading volumes.
Both NSE and BSE list many of the same companies. The difference between NSE and BSE lies mainly in index composition, trading volume, and historical origin.
What Is an Index in the Stock Market?
An index tracks the price movement of a selected group of stocks. It serves as a quick measure of overall market direction.
- Nifty 50 tracks the top 50 companies listed on the NSE by free-float market capitalisation.
- Sensex tracks the top 30 companies listed on the BSE.
When news reports say “the market rose 2% today,” they usually refer to the Nifty 50 or Sensex. For a full breakdown, read what Sensex and Nifty mean.
What Is SEBI?
The Securities and Exchange Board of India (SEBI) regulates the entire securities market. Established under the SEBI Act, 1992, it has three mandates:
- Protect investors.
- Develop the securities market.
- Regulate market intermediaries — exchanges, brokers, depositories, and mutual funds.
SEBI requires all brokers to be registered. Under the SEBI (Stock Brokers) Regulations, 1992, only authorised intermediaries can execute trades on your behalf. This ensures every transaction is recorded, traceable, and settled through a regulated clearing system.
What Is Market Capitalisation?
Market cap is the total value of a company’s outstanding shares. It is calculated as:
Market Cap = Current Share Price × Total Shares Outstanding
Companies are classified by market cap:
- Large-cap: Top 100 by market cap (e.g., Reliance, TCS, HDFC Bank)
- Mid-cap: Ranked 101–250
- Small-cap: Ranked 251 and below
Market cap determines which index a stock belongs to and often signals its risk profile. Large-cap stocks tend to be more stable; small-caps carry higher risk and higher potential return.
Primary Market vs Secondary Market
The stock market operates in two layers:
- Primary market: Where companies raise capital by issuing new shares through an IPO (Initial Public Offering). Investors buy shares directly from the company.
- Secondary market: Where existing shares are traded between investors on the exchange. This is what most people mean when they say “share market.”
Once a company lists through an IPO, its shares trade on the secondary market for the rest of their listed life.
What Is Equity?
Equity is ownership. When you buy a share, you own a fraction of the company. This entitles you to:
- A share of profits distributed as dividends.
- Voting rights at shareholder meetings.
- Capital gains if the share price rises.
Equity differs from debt: a bondholder lends money and earns fixed interest, while an equity holder owns a stake and bears the company’s risk. Debt capital has fixed returns; equity does not.
Types of Trading
There are two main ways to trade shares in India:
- Intraday trading: Buy and sell the same stock within a single trading day. You do not take delivery of shares. This is speculative and carries higher risk.
- Delivery trading: Buy shares and hold them in your demat account. You take actual ownership. This suits long-term investing.
For a side-by-side comparison, see intraday vs delivery trading.
Trading Sessions and Market Hours
The Indian stock market operates on weekdays (Monday to Friday) with three sessions:
| Session | Time (IST) |
|---|---|
| Pre-open | 9:00 AM – 9:15 AM |
| Normal trading | 9:15 AM – 3:30 PM |
| Post-close | 3:40 PM – 4:00 PM |
Markets remain closed on weekends and on exchange-declared holidays. For session details, see market sessions explained.
To check whether the market is open right now, visit the market status page.
How to Start Investing in the Stock Market in India
- Open a demat and trading account with a SEBI-registered broker. Here is a step-by-step guide.
- Learn the basics. Understand how the share market works, what ETFs and mutual funds (SIPs) are, and how to read fundamental analysis and technical indicators.
- Start with delivery trades. Buy shares you understand and hold them. Avoid intraday trading until you have experience.
- Track your holdings. Use your depository app (NSDL or CDSL) to verify that shares are credited to your demat account — not just your broker’s platform.
What Protects You as an Investor?
- Electronic holding: Your shares sit with NSDL or CDSL, not with your broker. If the broker defaults, your holdings are safe.
- Contract notes: Every trade generates a contract note with a unique exchange-verified ID.
- Grievance redressal: File complaints through SEBI SCORES.
- Circuit limits: Exchanges impose circuit limits — automatic price bands that halt trading if a stock moves too far in one direction.
Sources
- SEBI Investor Education Portal
- NSE India — About
- BSE India — About
- SEBI (Stock Brokers) Regulations, 1992
Verify current status at nseindia.com, bseindia.com, or msei.in before trading.