How much smaller should my position be for a multi-day swing trade than for a day trade with the same dollar stop?
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Your Result
Enter your trade details and an overnight risk buffer, then click Calculate to compare both position sizes.
How this is calculated
A stop-loss order sitting on a multi-day swing trade is not guaranteed to fill at your stop price. Price can move past it before the market opens or before your order is triggered, especially around news or earnings.
This tool widens your intraday stop distance by the buffer percentage you enter, then sizes your position against that wider effective stop, instead of your tighter intraday stop distance.
The result is a smaller share count for the same dollar risk budget than a same-stop day trade would use, since the position now has to survive a bigger realistic worst-case move.
This does not guarantee your actual loss will be capped at your risk budget. A large enough overnight move can still exceed even a widened stop distance.
Risk & liability disclaimer: This calculator produces a mathematical estimate based on the numbers you enter. It is not financial advice and does not guarantee any trading outcome. Trading involves risk of loss, and past position sizing decisions do not predict future results. Trading Habits is not a broker-dealer, registered investment adviser, or tax professional, and is not affiliated with any broker, exchange, or data provider. We do not guarantee this tool is error-free or suitable for your situation - always verify results independently and consult a licensed professional before making any trading or financial decision. You could lose some or all of the capital you trade with.
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