Position-size calculator

How to use this calculator

Position sizing decides how much of your money goes into each stock. It often matters more than which stock you pick, because it controls how much a single mistake can hurt.

Equal weight

Split your portfolio evenly across a set number of names: amount per stock = portfolio ÷ number of stocks. With 30 stocks, each is about 3.3% — so even if one falls hard, the damage to the whole is limited.

Risk-based (stop-loss method)

Here you cap the loss, not the amount. Decide the most you'll lose on the trade (say 1% of your portfolio), and where your stop-loss sits. Then:

• Rupee risk = portfolio × risk%.
• Per-share risk = entry − stop-loss.
• Shares to buy = rupee risk ÷ per-share risk; amount = shares × entry.

This way, if the stop is hit, you lose only your chosen amount — whatever the stock's price.

How to read it

If the risk-based amount comes out larger than a sensible single-stock cap, trust the cap — a tight stop can otherwise suggest an oversized position. Good investing is as much about limiting the downside as chasing the upside.