At 9:15 every weekday morning, prices start flickering across Indian trading screens. Within minutes, some shares are up sharply and others are down.
Nothing about most of those businesses changed overnight. So what moved the price?
The honest answer has two layers. In the short run, a stock price is set by orders: buyers and sellers meeting at a number. In the long run, it is pulled by what the business earns.
It also depends on what investors will pay for those earnings.
At Belong, we see investors confuse these two layers constantly.
NRIs react to an early-morning signal as if it changes a company's worth. Resident Indians wonder why a great company's share price has gone nowhere for years.
This guide explains how a stock price is determined, from the first trade of the day to the long-term trend.
The Short Answer
A stock price is the last price at which a buyer and a seller agreed to trade. Nobody sets it. It emerges from thousands of orders meeting on an exchange.
Behind those orders sit expectations about the company's future. That is why prices move with news, results, interest rates and mood.
Over long periods, prices tend to follow earnings. Over short periods, they can follow almost anything.
Layer One: How Orders Set the Price
Indian stock exchanges run an electronic order book. Every buy and sell order is listed by price.
SEBI's investor education material on how to buy and sell shares describes the order screen. It notes this view gives an idea of supply and demand, meaning what quantity is available at what price.
Bids and Asks
Buyers place bids. A bid is the highest price a buyer will pay.
Sellers place asks. An ask is the lowest price a seller will accept.
The gap between the best bid and the best ask is called the spread. Heavily traded shares usually have small spreads. Thinly traded shares can have wide ones.
A Simple Order Book Example
Here is a hypothetical order book for one share.
The best bid is 100.00. The best ask is 100.05. No trade happens until someone crosses that gap.
Now suppose an investor places a market order to buy 600 shares. A market order buys at whatever prices are available.
It takes all 300 shares at 100.05. It then takes 300 more at 100.10. The last traded price becomes 100.10.
One order moved the price up by 10 paise. Nothing about the company changed. The supply at lower prices was simply used up.
Order Types Matter
SEBI's material describes the main order types investors use.
Market order: Buys or sells at the best price currently available.
Limit order: Buys or sells only at your chosen price or better.
Stop-loss order: Triggers a sale when the price falls to a set trigger level.
Market orders give certainty of execution, not of price. In a thinly traded share, a large market order can move the price noticeably against you.
Tip: In less liquid shares, use limit orders. They protect you from paying far more than you intended.
How the Opening Price Is Set
The first price of the day is set differently. NSE runs a pre-open session before normal trading begins.
During this session, orders are collected but not matched immediately. Then the exchange calculates a single opening price.
NSE describes this as the price at which the maximum volume is executable. If several prices tie, it picks the smallest order imbalance. If that also ties, it picks the price nearest the previous close.
A Hypothetical Opening Auction
Suppose these orders arrive during pre-open.
Buy orders: 100 shares at up to 102 rupees, 200 at up to 101, and 300 at up to 100.
Sell orders: 150 shares at 99 or more, 200 at 100 or more, 250 at 101 or more. Another 100 will sell at 102 or more.
At each possible price, the exchange checks how many shares could trade.
The most volume trades at 100 rupees. That becomes the opening price.
This process stops a few early orders from creating a wild first print. It gathers overnight news and sentiment into one fair starting point.
Layer Two: What Drives Buyers and Sellers
Orders explain how a price is set. They do not explain why buyers and sellers chose those prices. That depends on expectations.
Company Earnings
The biggest long-term driver is profit. Investors buy shares because they want a claim on future earnings.
When a company's earnings rise steadily, its share price usually follows over time. Our guide on EPS explains how earnings are measured per share. Look beyond headline profit to operating profit, which shows how the core business performs.
Valuation: What Investors Pay for Earnings
Earnings alone do not set the price. Investors also decide how much to pay for each rupee of profit.
That is the P/E multiple. Here is a simple identity:
Share Price = EPS x P/E Ratio
Suppose a hypothetical company earns 20 rupees per share. Investors pay 25 times earnings. The price is 500 rupees.
Now suppose EPS grows to 30 rupees over five years. That is roughly 8.4 percent growth a year. But investors become less enthusiastic, and the P/E falls to 18.
The price becomes 540 rupees. Despite strong earnings growth, the share price rose only about 1.6 percent a year.
This is the answer to a common question. A great company's stock can go nowhere for years if it started out expensive. Our guides on the P/B ratio and intrinsic value explore how investors judge whether a price is reasonable.
Interest Rates
Interest rates shape what investors are willing to pay for future profits. When rates rise, safer investments like deposits and bonds become more attractive. Investors often demand more from shares, and valuations can fall.
When rates fall, the reverse can happen. That is why central bank decisions can move entire markets in a single day.
Inflation
High inflation can squeeze company margins and push interest rates up. Both can weigh on share prices.
Company Finances
Investors look at more than profit. A company with heavy borrowing can see its share price fall sharply when conditions tighten. Our guide on the debt-to-equity ratio explains why. Dividend policy matters too, especially for income investors. Our guide on dividend yield covers that side.
Liquidity and Money Flows
Prices also move with the flow of money. When large investors buy or sell together, prices can move regardless of company news.
Foreign investors are a major source of these flows in India. Our guide on what GIFT Nifty tells you about FII sentiment explains how to read their mood.
Liquidity also matters at the stock level. Thinly traded shares can move sharply on modest orders.
News, Mood and Momentum
Results announcements, management changes, regulatory news and global events all shift expectations quickly. So does crowd psychology.
Rising prices attract buyers. Falling prices attract sellers. This momentum can push prices well beyond what fundamentals justify, in both directions.
Short-Term vs Long-Term Price Drivers
Here is a broad view of what matters over different time frames.
The longer your horizon, the more fundamentals matter. The shorter your horizon, the more randomness you face.
The Insight Most Blogs Miss: Price and Value Converge Slowly
Many guides imply that price quickly reflects value. It often does not.
A stock can trade above or below what its business justifies for years. Markets correct eventually, but nobody can reliably predict when.
This is why long-term investors focus on business quality and reasonable valuation. They accept that the price will wander in the meantime.
How Market Size Shapes Price Behaviour
Larger, widely held companies tend to have deep order books. Their prices usually move more smoothly.
Smaller companies often have thinner trading. Their prices can jump or fall sharply on modest volume. Our guides on market capitalisation and large cap vs mid cap vs small cap explain these differences.
How IPO Prices Are Set
IPO pricing works differently. Before listing, a company and its bankers set a price band, and investors bid within it.
Strong demand often shows up in subscription levels. Our guide on IPO subscription status explains how to read them. Once listed, the share trades through the normal order book like any other.
Listing-day prices can swing far from the issue price. Lock-in periods can later affect supply. Our guide on the IPO lock-in period explains why.
Read about GIFT City IPOs or explore IPO investing on our platform.
A Pattern We See: Reacting to the Morning Signal
Here is a common pattern among NRIs. Early in the day, before Indian markets open, an index signal points lower. Some investors rush to sell or pause investments.
By afternoon, the market has recovered. They sold at the worst point of the day.
Early signals reflect overnight sentiment. They rarely change the long-term value of a business. Our guide on GIFT Nifty as an early indicator explores this further. So does whether NRIs should time investments using GIFT Nifty. Our article on common GIFT Nifty mistakes covers related traps.
The NRI Scenario: Prices in Rupees, Life in Another Currency
If you're working in Dubai and holding Indian shares, the price you see is in rupees. Your gain in dirhams also depends on the rupee.
Currency and share prices sometimes move together. Heavy foreign selling can push both Indian shares and the rupee lower at the same time. That can hit NRI portfolios twice. Our guide on GIFT Nifty and the rupee explains this link.
Capital gains on Indian shares are taxable in India for NRIs. The Income Tax Department's non-resident help page explains filing obligations. Our tax filing service can help.
Many NRIs hold a steadier layer alongside shares. Belong offers USD fixed deposits through GIFT City. Compare rates on our NRI FD rates tool. Our comparison of GIFT City FD vs FCNR vs NRO and NRE FDs explains each option.
Tip: Separate price noise from business change. A falling price is a reason to review, not automatically a reason to sell.
The Resident Indian Scenario: Global Prices, Different Clocks
If your portfolio is entirely in Indian shares, your prices move with Indian markets and the rupee.
Global markets trade in different time zones. US prices are set while India sleeps. Overnight moves often show up in Indian opening prices the next morning. Our guide on GIFT Nifty trading hours explains how this overlap works.
For a resident Indian, a US share's rupee value depends on both its dollar price and the exchange rate. That adds diversification, and an extra layer of movement.
Resident Indians can invest abroad under the RBI's Liberalised Remittance Scheme. The RBI's LRS FAQs explain what is permitted. GIFT City offers a simpler path to USD exposure. Browse options on our GIFT City mutual funds tool, or read our guide to investing in the USA from India.
Index Prices and Derivatives
Index levels are calculated from the prices of their constituent shares. When large companies move, the index moves.
Futures prices are linked to the index but also reflect expected interest costs and sentiment. Before exploring futures and options, read our guide to GIFT Nifty futures.
To study price behaviour over time, see our GIFT Nifty historical data and chart guide. The GIFT Nifty live tracker and our weekly GIFT Nifty outlook show current direction.
If you are researching companies, our best stocks list is a starting point, not a recommendation. SEBI's Beginner's Guide to the Capital Markets is a helpful primer.
Your Own Price of Money
Market prices respond to interest rates. So does your own borrowing cost.
A strong CIBIL score usually means lower interest on loans. Our guide to the best credit cards in India helps you choose a card you can pay in full. If you plan to buy a home, our NRI home loans guide explains the options.
Why Price Moves Feel So Personal
A falling price on your screen can feel like a judgement on your decision. A rising one can feel like proof you were right.
Neither is true in the short run. Prices move for reasons that often have nothing to do with you or the business.
The calmest investors learn to see price as information, not instruction. They ask what changed in the business, not just what changed on the screen.
Return to India: Prices in Your Home Currency
If you plan to move back, rupee prices become the measure that matters. Currency swings on Indian shares then matter less to your spending.
Your tax position may also change as your residential status shifts. Plan any large sales or rebalancing with a tax professional.
Your Decision Guide
If a price moves sharply in a day, check for real news before acting.
If you trade thinly traded shares, use limit orders.
If a great company's price has stalled, check whether it started out expensive.
If interest rates are rising, expect pressure on valuations.
If you invest for years, focus on earnings growth and reasonable valuation.
If you are an NRI, remember currency can amplify price moves.
What happens if you ignore this?
You may sell good businesses on noise, or buy expensive ones on momentum. Both mistakes come from treating short-term prices as long-term truth.
What NRIs and Resident Indians Should Do Next
If you're an NRI: Before reacting to a price move, check whether anything changed in the business. Track your holdings in your home currency as well as rupees.
If you're a resident Indian: Remember global prices are set on different clocks and in different currencies. Use that as diversification, not as a source of daily anxiety.
Compare Fund Options
If you prefer to let professionals handle price swings, our tools help you compare funds.
Browse the GIFT City mutual funds tool and the GIFT City AIF tool. Global options include the DSP Global Equity Fund and the Edelweiss Greater China Equity Fund.
India-focused options include the Tata India Dynamic Equity Fund and the Sundaram India Mid Cap Fund. You can also explore our USD mutual fund options.
Want to discuss market moves with other investors? Download the Belong app and join our WhatsApp community. Our regulatory credentials are on our licences page.
Frequently Asked Questions
Who decides the price of a stock?
No single person or body decides it. The price is set by buyers and sellers placing orders on an exchange. Each trade sets the latest price.
Why do stock prices change every second?
New orders arrive constantly as investors react to news, results and sentiment. Each trade at a new price updates the share price.
How is the opening price of a stock decided in India?
NSE runs a pre-open session that collects orders and sets the opening price. It picks the price at which the maximum volume can be traded.
Does a company's profit decide its share price?
Over long periods, earnings are a major driver. But the price also depends on how much investors are willing to pay for those earnings.
Why can a good company's stock fall?
The price may have been too high to begin with, interest rates may rise, or sentiment may turn. Business quality and share price do not always move together.
Sources
Disclaimer
This article is for educational purposes only and is not investment, tax or legal advice. All prices, orders and figures in examples are hypothetical and used for illustration. Investments are subject to market and currency risk. Please consult a qualified advisor before making investment decisions.