The stock market connects people who want to buy company shares with people willing to sell them. In India, most of this trading happens through the National Stock Exchange and the Bombay Stock Exchange, under rules set by the Securities and Exchange Board of India.
Prices change because buyers and sellers keep revising what they will accept. Earnings, interest rates and company announcements affect those decisions. Sometimes the cause is less obvious. A large fund may simply need to reduce a position.
The concept is simple. The machinery behind each trade takes a little more work to understand.
What do you own when you buy a share?
A share represents partial ownership in a company. If you buy one equity share of Reliance Industries, you become one of its shareholders, though your ownership percentage will be tiny.
That ownership may carry voting rights, depending on the class of shares. You also have a residual claim on the company’s assets and profits. This does not mean the company owes you a slice of every year’s profit. Dividends depend on the board’s decision, and the business may retain its earnings instead.
The stock market provides the regulated system through which these shares change hands. The exchange runs the electronic order book. Your broker gives you access to it, while clearing corporations and depositories handle the movement of money and securities after execution.
NSE and BSE are stock exchanges. The stock market is the broader network that includes exchanges, brokers, investors and the systems used to clear and settle trades.
How a stock trade actually works
Suppose you want to buy 20 shares of a company. No real trade record was supplied for this article, so the price example here is deliberately hypothetical.
1. You send an order through your broker
Your order tells the broker what you want to buy, how many shares you want and how the price should be handled.
A limit order at ₹247.50 tells the system not to pay more than ₹247.50 per share. A market order asks for immediate execution against the best available sell orders. It does not guarantee the last traded price shown on your screen.
That distinction catches beginners.
If only 8 shares are available at ₹247.50 and the next 12 are offered at ₹247.80, a market order for 20 shares may fill at both prices. The difference is small in a liquid stock, but it can become expensive when volume is thin.
2. The exchange tries to match it
Indian exchanges use price and time priority. A buyer offering a higher price gets priority over buyers bidding less. When two buyers quote the same price, the order entered earlier normally goes first.
Assume a seller is ready to sell 20 shares at your limit price of ₹247.50. The orders match and the trade executes. Your purchase value comes to roughly ₹4,950 before taxes and transaction charges, which is the amount that matters when you check whether the position fits your account.
The counterparty remains anonymous. It could be another individual or a large institution. You are dealing with an electronic order book, not negotiating directly with the seller.
3. The market records the execution
After the match, ₹247.50 becomes the latest traded price for that stock. The bid and ask may still be different because other unexecuted orders remain in the book.
This explains a common point of confusion. The last traded price tells you where the most recent transaction occurred. It does not promise that your next order will execute there.
Every candle on a chart compresses these completed trades into a time period. A five minute candle records the opening price, highest trade, lowest trade and closing trade during those five minutes.
4. Clearing and settlement follow
Execution happens first. Settlement comes later.
For most Indian equity trades, the standard cycle is T+1. The letter T refers to the trade date, so the normal settlement completes on the next business day. A purchase made on Friday would generally settle on Monday, provided Monday is not a market holiday.
India also permits optional T+0 settlement in eligible shares through participating brokers. Availability depends on the stock and the broker, so beginners should not assume every order will settle on the same day.
Your broker and the clearing corporation handle the obligations. Funds are collected, securities are delivered and the purchased shares are credited to your demat account after settlement.
Who is active in the market?
Retail investors trade with personal capital. Some hold shares for years, while others enter and exit during the same session. Their order sizes are usually small compared with those of large funds.
Mutual funds, insurance companies and foreign portfolio investors may deal in positions worth crores of rupees. Their orders can affect price, particularly when they build or reduce a holding over several sessions. Size does not make every institutional decision correct, but it does mean a single retail trader cannot move a liquid large company stock by placing a small order.
Brokers route client orders and provide trading platforms. They must register with SEBI and follow exchange rules. Brokerage is only one cost; a contract note can also contain exchange charges, taxes and statutory levies.
Liquidity comes from the collection of standing buy and sell orders. Proprietary firms and active traders may quote frequently, while designated market makers operate in certain segments. Do not assume every stock has a participant obligated to offer you a tight price. Thinly traded shares can have wide spreads and very little quantity near the last traded price.
SEBI writes and enforces securities market rules. Exchanges monitor trading on their platforms, while clearing corporations manage settlement risk.
You rarely know who took the other side of your order. More useful questions are whether the stock has enough liquidity, how much you can lose and what evidence supports the trade.
Equity first, derivatives later
The equity cash market is the cleanest place for a beginner to learn. You buy shares, hold them in a demat account and sell when you choose. There is no contract expiry and no time decay. Leverage is absent unless you deliberately use a funded or margin product.
Futures and options add contract rules. Futures create an obligation tied to the underlying stock or index. Options have an expiry date, a strike price and a premium that changes with time, volatility and movement in the underlying asset.
Small premiums often attract beginners to options. That low ticket price can give a false impression of low risk. An option buyer can lose the entire premium, while an uncovered option seller may face losses far beyond the premium received.
Commodity contracts cover assets including gold and crude oil. Currency derivatives track exchange rates. Neither is a necessary first step for someone who is still learning the difference between a market order and a limit order.
Spend time in cash equities first. Once you can read an order book, calculate position risk and follow a written exit rule, derivatives will make more sense.
Terms you will see on a trading screen
- Bid and ask: The bid is the highest standing buy price. The ask is the lowest standing sell price. The gap between them is the spread.
- Market order: This seeks immediate execution at the best prices currently available. Speed takes priority over price control.
- A limit order gives you price control. A buy limit executes only at your stated price or lower, though it may remain unfilled if sellers never come down to that level.
- Stop loss: A stop order activates after a trigger price is reached. It can restrict damage, but it cannot guarantee the trigger price during a sudden gap or a fast market.
- Index: The Nifty 50 tracks a specified group of large NSE listed companies. The Sensex tracks 30 companies listed on BSE. An index is a measurement; you cannot buy the index itself as an ordinary company share.
- Market capitalisation comes from the share price and the number of outstanding shares. A company with 100 crore shares priced at ₹320 would have a market value near ₹32,000 crore, though the figure changes whenever the share price moves.
- Demat account: This account holds securities electronically. Your trading account handles orders and funds, while the demat account records ownership of delivered shares.
- Volume counts completed trades in shares or contracts during a stated period. High volume tells you that participation increased. It does not, by itself, prove that the next move will continue in the same direction.
How to practise without risking capital
Reading order definitions will get you only part of the way. You should also see what happens when a limit order stays pending, a market order slips and a stop activates during a quick price move.
Paper trading lets you practise those mechanics with virtual money. Neostox can be used to test equity, futures and options orders under live NSE and BSE market conditions, while the trade log records your entries and exits.
Do not treat a profitable simulation as proof that a strategy works. Virtual execution may differ from a live fill, and paper losses do not create the same pressure as losses in your bank account.
Still, a written sample of 30 to 50 simulated trades is more useful than three winning trades followed by a deposit. Record the entry reason, planned exit, actual result and charges you would have paid. If your rules keep changing halfway through the sample, restart the test rather than combining several versions and calling them one strategy.
Don't skip: Check our guide (What Are the Biggest Mistakes Beginners Make When Practicing With a Stock Trading Simulator?)
Mistakes that cost beginners money
Many new traders learn a chart pattern before learning order mechanics. They enter with a market order in a thin stock, receive a poor fill and blame the pattern when the real problem was liquidity.
Starting with weekly options creates a different problem. The underlying stock may move in the expected direction while the option still loses value because the move was too small or arrived too late. Equity trading removes that extra variable during the learning stage.
Paper trading also gets dismissed too quickly. A simulator will not reproduce fear, greed or every instance of slippage, but it will expose basic errors without charging you for them. If you repeatedly forget your stop or double a losing position in a virtual account, real money will not correct the habit.
Helpful Guide: I'm New to Investing and Don't Want to Risk Money Yet. What's the Best Stock Market Simulator?
The most dangerous assumption is that market knowledge produces certainty. A sound setup can lose. Position size decides whether that loss remains routine or damages the account.