What happens if I keep holding day-margin-sized futures positions overnight?

Models how many contracts a trader who sizes for day-trading margin is oversized by once overnight margin applies, and projects the cost of repeated forced reductions if the trader supplies a per-event cost estimate.

How is this calculated?

Max day and overnight contract counts are each equity divided by the respective margin per contract, rounded down. Oversized contracts equal your typical contract count minus the max overnight contracts, floored at zero. If oversized and a cost per event is entered, that cost is multiplied by the number of overnight holds modeled.

Futures Overnight Hold Simulator

Set Up the Scenario

This models a hypothetical you choose the inputs for. It does not predict whether or when your broker acts.

Your Result

Fill in your scenario, then click Run to see how oversized your typical contract count is for an overnight hold.

How this is calculated

This models a hypothetical scenario you choose the inputs for. It does not predict whether your broker will actually force a reduction, or when.
Day-trading margin is set for exposure while the exchange is open and your broker is watching the position. Overnight margin is set for exposure the broker is carrying unattended, and is usually much higher per contract.
If your typical day-margin contract count is larger than what your equity supports at the overnight margin rate, every one of those holds is an oversized position at the close, whether or not your broker actually intervenes that time.
The cost-per-event field is a number you supply, not a fee this tool knows or predicts. Leave it blank to see the contract math on its own.

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.

What happens if I keep holding day-margin-sized futures positions overnight?

Set Up the Scenario

Your Result

How this is calculated

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