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Investology (Investology Quant Data Services Private Limited) is a SEBI Registered Research Analyst (INH000029528). Investment in securities market are subject to market risks. Read all the related documents carefully before investing.

Position size calculator

A quantity from your own capital, risk per trade, entry and stop-loss. For learning, not a recommendation.

About this calculator

Enter your own capital, the share of it you accept losing on one trade, and the trade’s entry and stop-loss. The calculator works out the quantity at which a hit stop-loss loses about that amount.

A calculator for learning, not a recommendation. It knows only the figures you type, works in your browser, and says nothing about whether a trade suits you. Once you enter your own capital and risk per trade, they are remembered on this device only and never sent to us; Clear empties the form and forgets them.

Your figures

Illustration only: the figures filled in are made up, from the shares example in the position sizing lesson. Not a recommendation. Replace them with your own.

Direction

₹3,00,000

Leave empty for shares. For futures and options, the units in one lot as the exchange sets it today. For MCX, the quotation units in one lot: Gold Mini (100 grams, quoted per 10 grams) is 10; Crude Oil Mini (10 barrels, quoted per barrel) is 10.

Result

333 shares

Risk budget1% of ₹3,00,000
₹3,000
Lost if the stop-loss is hitBefore costs, slippage and gaps
₹2,997
Risk per share or unitEntry 250 to stop-loss 241
₹9
Position value27.8% of your capital
₹83,250
  • The quantity is rounded down, so the amount at risk is at most the budget.
  • A gap beyond the stop-loss, slippage and trading costs can make a loss larger than shown.
  • Several open trades add up: keep a limit on your total open risk as well.

How it is worked out

  1. Risk budget = capital × risk per trade.
  2. Risk per share or unit = entry − stop-loss for a buy (stop-loss − entry for a sell).
  3. Without a lot size: quantity = risk budget ÷ risk per unit, rounded down.
  4. With a lot size: risk per lot = risk per unit × lot size, and lots = risk budget ÷ risk per lot, rounded down.
  5. Position value = quantity × entry. Compare it with the money and margin in your account.

Lot sizes and contract specifications are set by the exchanges and change from time to time. Check the current ones on the exchange’s website before you use them here.

Read with it

All lessons on Learn

Investology publishes these pages as investor education. About Investology

Regulatory disclosure

Investology (SEBI RA INH000029528) publishes research recommendations under the SEBI (Research Analysts) Regulations, 2014. It does not manage portfolios, provide personalised investment advice, execute trades, or guarantee returns. KYC is mandatory before accessing any research service.

Investment in securities market are subject to market risks. Read all the related documents carefully before investing.

Registration granted by SEBI, enlistment with BSE and certification from NISM in no way guarantee performance of the intermediary or provide any assurance of returns to investors.

The securities quoted are for illustration only and are not recommendatory.

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