What Are Stocks?
Exchanges, listings, indices — understand what you're actually buying when you buy a share.
What You Actually Own
A share (or stock) is a fractional ownership stake in a company. Buy 100 shares of Infosys, and you own a tiny slice of that company — its earnings, assets, and future growth.
- Equity = ownership. Shareholders are last in line if a company liquidates, but first to benefit when it grows.
- Face value: the nominal value of a share (usually ₹1 or ₹10). Irrelevant to market price.
- Market price: what buyers and sellers agree to in real time on the exchange.
BSE and NSE
- BSE: oldest in Asia, 5,000+ listed companies, benchmark is Sensex (30 stocks).
- NSE: higher trading volume, benchmark is Nifty50 (50 stocks).
- Most stocks are listed on both. SEBI regulates both exchanges.
- Trades settle T+1 (next business day since 2023).
Large-cap vs Mid-cap vs Small-cap
- Large-cap: Top 100 by market cap (TCS, HDFC, Reliance). Stable, lower return.
- Mid-cap: Rank 101–250. Higher growth potential, higher volatility.
- Small-cap: Rank 251+. Highest risk and potential reward. Poor liquidity.
Reading a Stock
P/E, EPS, market cap, book value — decode every number on a stock screener.
Market Capitalisation
Market Cap = Share Price × Total Shares Outstanding
- Market cap tells you the total price tag the market puts on a business.
- A ₹10 share can be a larger company than a ₹5,000 share — depends on shares outstanding.
P/E Ratio (Price-to-Earnings)
P/E = Share Price ÷ EPS
- P/E of 20 means you're paying ₹20 for every ₹1 of annual profit.
- Nifty50 long-run average P/E: ~20–22. Above 25 = expensive, below 15 = cheap historically.
- Compare P/E within the same sector only — banking at 15 vs IT at 30 is normal.
EPS (Earnings Per Share)
EPS = Net Profit ÷ Total Shares
- Rising EPS = company is growing profit. The most important number to track over time.
- EPS growing 15–20% consistently over 5 years = strong business.
Book Value and P/B Ratio
- Book Value = Total Assets − Total Liabilities.
- P/B < 1: buying ₹1 of assets for less than ₹1. Common in banks and PSUs.
Dividend Yield
- Yield = Annual Dividend ÷ Share Price × 100
- Coal India: ~8%. Growth companies like Zomato: 0%.
Fundamental Analysis
Revenue, margins, ROCE, moats — learn to judge if a business is worth owning.
Reading a Profit & Loss Statement
- Revenue: total sales. Growing revenue is the foundation of everything.
- EBITDA: operating profit before interest, tax, depreciation. Shows core business health.
- PAT (Net Profit): what's left after everything. This drives EPS.
- Look for consistent growth in all three over 5–10 years.
Key Profitability Ratios
- ROCE = EBIT ÷ Capital Employed. Above 15% = good. Above 20% = excellent.
- ROE = Net Profit ÷ Shareholders' Equity. Above 15% consistently = strong business.
Economic Moats
- Pricing power: can raise prices without losing customers. Asian Paints.
- Switching costs: TCS clients don't switch IT vendors easily.
- Network effects: more users = more valuable. UPI, exchanges.
- Cost advantage: IRCTC — government monopoly on rail ticketing.
- Brand: consumers pay premium. HUL, Titan, Nestle India.
Debt and Balance Sheet
- Debt-to-Equity: below 1 is generally safe. Above 2 is risky.
- Interest Coverage = EBIT ÷ Interest. Below 3 = danger zone.
Technical Analysis Basics
Candlesticks, support/resistance, RSI — use charts to time your entry and exit.
Candlestick Charts
- Each candle = one period (day/week/hour). Shows Open, High, Low, Close.
- Green candle: Close > Open (price went up). Red candle: Close < Open (price went down).
- Wicks (shadows) show the high and low beyond the candle body.
Support and Resistance
- Support: price level where buying repeatedly stops a decline.
- Resistance: level where selling repeatedly stops a rise.
- When resistance breaks with volume, it becomes the new support.
Moving Averages
- 20-day MA: short-term trend. Stock above 20DMA = short-term uptrend.
- 200-day MA: long-term trend. Stock above 200DMA = bull phase.
- Golden cross: 50DMA crosses above 200DMA = bullish signal.
RSI (Relative Strength Index)
- Ranges from 0–100. Measures momentum.
- Above 70: overbought. Below 30: oversold — potential bounce.
Volume — The Lie Detector
- High volume on a breakout = genuine move. Low volume = weak, likely to fail.
Building Your First Portfolio
Diversification, position sizing, sector allocation — build a portfolio that can actually grow.
Diversification
- Own 15–20 stocks across 5–7 sectors to eliminate company-specific risk.
- Correlation matters: 5 IT stocks move together. Mix IT + banking + pharma + FMCG + infra.
- Beyond 25 stocks, diversification benefit shrinks — you're building a worse index fund.
Position Sizing
- No single stock should exceed 10% of your equity portfolio.
- High-conviction: 7–10%. Normal: 4–6%. Speculative: 1–2%.
- If a stock doubles, trim it back to your target allocation.
Core vs Satellite
- Core (70%): Large-cap stocks or Nifty50 index fund. Stable, low-maintenance.
- Satellite (30%): Mid-caps, small-caps, sector bets. Higher risk/reward.
- Beginner: 100% core until you have ₹5L+ invested and understand each business.
When to Sell
- Thesis broken: the reason you bought no longer holds.
- Fundamentals deteriorating: ROCE falling for 3+ years, debt rising.
- Never sell just because the price fell. Price ≠ value.
Investor Psychology & Common Mistakes
FOMO, panic, anchoring — the behavioural traps that destroy returns and how to avoid them.
FOMO (Fear of Missing Out)
- Buying after a 50% rally because "it keeps going up." You're buying what someone else is selling.
- Rule: Never chase. If you missed a move, wait for the next entry.
Panic Selling
- BSE Sensex has crashed 20–50% at least 10 times in 30 years. It recovered every time.
- Selling at the bottom locks in losses and ensures you miss the recovery.
- Solution: only invest money you won't need for 5+ years.
Overtrading
- Every trade costs: brokerage, STT, exchange charges, GST, and STCG tax.
- 100 trades/month can easily cost 1–2% of portfolio value before any losses.
Anchoring
- "It was ₹500, now ₹200 — it must go back." The market doesn't know what you paid.
- Ask: if I didn't own this, would I buy it today? If no, sell.
Recency Bias
- Long-run Nifty50 CAGR: ~12–13%. Don't extrapolate the last 12 months forever.
Course Complete!
You've finished Stock Market for Beginners. Ready for the next step?