From what is a share to how circuit breakers work — every essential stock market concept in one place.
The stock market is not a casino — it is a mechanism for allocating capital to businesses. Over the long term, owning shares in great Indian companies is one of the most powerful ways to build wealth.
The stock market is a regulated marketplace where buyers and sellers trade ownership stakes (shares) in publicly listed companies. In India, it operates primarily through two exchanges: NSE (National Stock Exchange) and BSE (Bombay Stock Exchange), both supervised by SEBI (Securities and Exchange Board of India).
The stock market has two layers:
NSE and BSE operate Monday to Friday (excluding exchange holidays). Pre-market session: 9:00–9:15 AM. Regular trading: 9:15 AM to 3:30 PM. Post-market: 3:40–4:00 PM. Commodity and currency markets have different hours.
Retail investors (like you), institutional investors (mutual funds, insurance companies, pension funds), Foreign Portfolio Investors (FPIs), market makers, and algorithmic traders all participate. Retail investors are a minority by volume but a majority by count — there are over 10 crore registered Demat accounts in India as of 2025.
Read the full article: What Is the Stock Market and How Does It Work in India →
India has two major stock exchanges. Understanding the difference helps you decide where to place orders and which index to track.
| Feature | NSE | BSE |
|---|---|---|
| Founded | 1992 | 1875 |
| Flagship Index | Nifty 50 | Sensex (S&P BSE Sensex) |
| Companies Listed | ~2,000+ | ~5,000+ |
| Daily Turnover | Higher (>90% of equity F&O) | Lower |
| F&O Dominance | Yes — virtually all F&O trades on NSE | Minimal F&O activity |
| For Beginners | Preferred for higher liquidity | Some small/mid caps only on BSE |
For most investors, the exchange you trade on is decided by your broker automatically — prices are virtually identical. If you are investing in equity F&O, you will be on NSE. For some small-cap stocks listed only on BSE, you’ll need to specify BSE.
Read the full article: NSE vs BSE — What’s the Difference and Which Exchange Matters More? →
A stock market index is a number that represents the overall health and direction of the market — or a specific segment of it. Nifty 50 and Sensex are India’s most widely tracked indices.
Tracks the 50 largest and most liquid companies on NSE across 13 sectors. Free-float market-cap weighted. Base: 1,000 (Nov 1995).
Historical CAGR: ~12–14% over 20+ years. Covers ~65% of NSE's total market cap.
Read full article →Tracks 30 of the largest and most financially sound companies on BSE. Free-float market-cap weighted. Base: 100 (1978–79).
Crossed 80,000 in 2024. Often cited in news headlines as India’s market barometer.
Read full article →Nifty Bank, Nifty Next 50, Nifty Midcap 150, Nifty Smallcap 250, India VIX (volatility index). Each tracks a specific segment.
Understanding which index to follow depends on what you’re invested in.
Read full article →You cannot buy an index directly. But you can invest in Nifty 50 or Sensex by buying an index mutual fund (via SIP or lumpsum) or an ETF (traded like a stock during market hours). Index funds are the lowest-cost, most beginner-friendly way to invest in the stock market. Expense ratios for index funds can be as low as 0.10%.
A share (or stock) represents a unit of ownership in a company. When you buy 100 shares of Infosys, you own a tiny fraction of Infosys — its assets, earnings, and growth potential belong to you proportionally. As a shareholder, you have the right to receive dividends, vote at AGMs, and sell your ownership stake at any time on the exchange.
Shares come in two types: equity (ordinary) shares — carry voting rights and variable dividends — and preference shares — have priority for dividends but typically no voting rights. Most investors trade equity shares.
Stock prices are set by supply and demand in real time. At any moment, buyers place bids (price they’re willing to pay) and sellers place asks (price they’re willing to accept). When a bid matches an ask, a trade occurs — and that price becomes the latest market price.
Short-term prices are driven by sentiment, news, and order flow. Long-term prices are driven by the company’s earnings growth — Benjamin Graham’s famous quote: "In the short run, the market is a voting machine; in the long run, it is a weighing machine."
Market cap = Share price × Total shares outstanding. SEBI classifies listed companies by market cap:
| Category | SEBI Definition | Risk Profile | Examples |
|---|---|---|---|
| Large Cap | Top 100 companies by market cap | Lower risk, stable | Reliance, TCS, HDFC Bank |
| Mid Cap | 101st–250th by market cap | Moderate risk & growth | Trent, Persistent, Voltas |
| Small Cap | 251st onwards | Higher risk, higher potential | Thousands of companies |
Read: What Is a Share → | Read: How Stock Prices Are Determined → | Read: What Is Market Cap →
You cannot buy shares directly on NSE/BSE — you need a broker who is a registered member of the exchange. Your broker opens two linked accounts for you:
Popular brokers in India: Zerodha (discount, ₹20/trade flat), Groww (beginner-friendly), Upstox, Angel One, and full-service brokers like HDFC Securities, ICICI Direct. Account opening is fully digital, takes 1–3 business days, and requires PAN, Aadhaar, and a bank account.
When a company lists for the first time, it sells shares to the public through an IPO. Retail investors (RII category) can apply for up to ₹2 lakh. Applications are placed through ASBA (Application Supported by Blocked Amount) — money is blocked in your bank account, not debited, until allotment. If you don’t get allotment (oversubscribed IPOs are common), the block is released immediately.
Not every IPO is a good investment. Many IPOs are priced at premium valuations. The Grey Market Premium (GMP) — a measure of expected listing gains — is speculative and unreliable. Invest in an IPO because the business fundamentals are sound, not because the GMP is high.
Read the full guide: How to Open a Demat and Trading Account →
Read the full guide: What Is an IPO — How to Apply and Should You Invest? →
After a company is listed, it regularly communicates with shareholders through corporate actions — events that affect your shareholding or income from shares.
A dividend is a portion of the company’s profits distributed to shareholders. Declared per share (e.g., ₹5 per share). If you hold 500 shares, you receive ₹2,500. As of 2020, dividends are taxed as income in the hands of the investor (old DDT regime abolished). TDS at 10% is deducted if total dividend exceeds ₹5,000 in a year.
The ex-dividend date is critical: you must own shares before this date to receive the upcoming dividend. After ex-date, the share price typically drops by roughly the dividend amount.
Three more corporate actions that directly affect your shareholding:
| Action | What Happens | Effect on Price | Effect on Ownership |
|---|---|---|---|
| Bonus Share | Free shares issued from company’s reserves (e.g., 1:1 = 1 extra share per share) | Halves (approximately) | Unchanged — you own same % of the company |
| Stock Split | Face value divided (e.g., 1 share ₹10 → 2 shares ₹5) | Drops proportionally | Unchanged |
| Rights Issue | Company offers existing shareholders new shares at a discount | Dilutes if you don’t subscribe | Increases if you subscribe; diluted if you don’t |
Read: What Is a Dividend → | Read: Bonus Shares, Stock Splits & Rights Issues →
SEBI and the exchanges have built safeguards into the system to prevent extreme volatility and panic-driven crashes. The two key mechanisms are index-level circuit breakers and stock-level price bands.
When Nifty 50 or Sensex falls sharply, the entire market halts trading:
| Index Fall | Before 1 PM | 1 PM – 2:30 PM | After 2:30 PM |
|---|---|---|---|
| 10% fall | 45-minute halt | 15-minute halt | No halt |
| 15% fall | 2-hour halt | 1-hour halt | Remainder of day |
| 20% fall | Remainder of trading day | ||
Individual stocks have daily price bands — most commonly 5%, 10%, or 20%. If a stock touches its upper circuit limit (e.g., up 20%), only buy orders are accepted; sellers dry up. If it hits the lower circuit (down 20%), only sell orders exist. Stocks in the F&O segment have dynamic bands that can widen during high volatility.
If your stock is in lower circuit day after day, investigate — it’s a red flag. Don’t panic-sell into thin markets. If your stock hits an upper circuit after strong results or news, you may not be able to sell immediately. Wait for the circuit to cool — prices usually rebalance over 1–3 days.
Read the full article: Circuit Breakers, Upper Circuit, and Lower Circuit Explained →
This pillar guide is supported by 13 in-depth articles — one for each core concept in stock market basics. Read them in order or jump to what you need.
How NSE and BSE function, who participates, trading hours, primary vs secondary market, and SEBI’s role.
Read →History, listing requirements, trading volumes, F&O dominance, Nifty vs Sensex — and which exchange matters more for retail investors.
Read →The index calculation formula, top 10 constituents, selection criteria, historical returns, and how to invest in Nifty 50.
Read →BSE Sensex from 1875 to 80,000+, the free-float formula, top 30 constituents, and Sensex vs Nifty comparison.
Read →Equity vs preference shares, face value vs market price, shareholder rights, and how the Demat system works.
Read →Order book mechanics, bid-ask spread, what moves prices short-term vs long-term, and Mr. Market explained.
Read →SEBI’s classification, why market cap matters, the formula, and how to choose large vs mid vs small cap stocks.
Read →Nifty Bank, Nifty Next 50, Nifty Midcap 150, Nifty Smallcap 250, India VIX, and sectoral indices explained.
Read →NSDL vs CDSL, broker comparison, step-by-step KYC process, account types, and common mistakes to avoid.
Read →IPO process, RII/NII/QIB categories, ASBA explained, allotment rules, notable Indian IPOs, and GMP pitfalls.
Read →Dividend yield, ex-dividend date, record date, DDT abolition (2020), TDS rules, and the dividend trap.
Read →What each corporate action does, why companies issue them, the effect on your shareholding, and what to do as an investor.
Read →SEBI’s market-wide halt rules, stock-level price bands (5%, 10%, 20%), dynamic bands for F&O stocks, and IPO listing circuits.
Read →You’ve covered the basics. The next step is understanding how to evaluate stocks using fundamental analysis — PE ratios, ROE, balance sheets, and more.
Explore More Articles →The stock market is regulated by SEBI, and your shares are held safely in a SEBI-registered Demat account with NSDL or CDSL. The risk is not of losing your shares — it is of share prices falling. As a beginner, start with large-cap stocks or Nifty 50 index funds, invest only money you won’t need for 5+ years, and never invest borrowed money.
Over any rolling 10-year period in NSE history, Nifty 50 has never delivered a negative return. The market does fall in the short term — often sharply — but recovers over time.
You can start with the price of a single share. Many quality large-cap stocks are available for ₹100–₹500. For Nifty 50 index ETFs, units are available for as little as ₹100–₹200. There is no legal minimum.
Practically, investing at least ₹500–₹1,000 per trade makes brokerage costs proportionally reasonable. For monthly investing, starting a ₹500–₹1,000 SIP in an index fund is a great entry point.
NSE (National Stock Exchange, est. 1992) and BSE (Bombay Stock Exchange, est. 1875) are both SEBI-regulated. NSE is dominant in trading volume — it accounts for over 90% of equity derivatives trading. BSE is older and lists more companies (~5,000 vs ~2,000 on NSE).
For most investors, it doesn’t matter which exchange you trade on — the same shares are listed on both and prices are nearly identical. NSE’s index is Nifty 50; BSE’s index is Sensex.
Nifty 50 is NSE’s flagship index, tracking the 50 largest and most liquid companies across 13 sectors. It is calculated using free-float market capitalisation. When people say "the market went up today," they usually mean Nifty 50 went up.
You can invest in Nifty 50 by buying a Nifty 50 index mutual fund (via SIP or lumpsum, available on all mutual fund platforms) or a Nifty 50 ETF (traded like a stock). Index funds have expense ratios as low as 0.10%. This is the most recommended starting point for equity investing in India.
To open a Demat account: (1) Choose a SEBI-registered broker — Zerodha, Groww, Upstox, Angel One, HDFC Securities. (2) Complete eKYC online — you need PAN card, Aadhaar card, bank account details, and a selfie. (3) Sign the account opening form digitally via Aadhaar OTP or DigiLocker. (4) Your Demat + trading account is activated in 1–3 business days.
Discount brokers like Zerodha charge ₹20/trade flat (no brokerage on delivery). Full-service brokers charge a percentage of trade value but offer advisory services. For beginners, a discount broker is usually the better choice.
A circuit filter is a daily price band set by exchanges (e.g., 5%, 10%, or 20%). If a stock hits the upper circuit (up 20%), trading pauses — only buy orders come in, no sellers. If it hits the lower circuit (down 20%), only sell orders exist, no buyers. This prevents extreme intraday price swings.
A stock stuck in lower circuit for multiple days is often a red flag — investigate the reason before taking any action. Stocks in the F&O segment have dynamic price bands that can expand during high volatility.
Yes. Since April 1, 2020 (budget 2020), dividends are taxable in the hands of the investor at their applicable income tax slab rate. The Dividend Distribution Tax (DDT) paid by companies was abolished.
If a company pays you dividends exceeding ₹5,000 in a financial year, TDS at 10% is deducted at source. You declare all dividends as “Income from Other Sources” in your ITR. For investors in the 30% slab, dividends are significantly less tax-efficient than capital gains.
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