PropValue

Tool

Futures position sizer

Size from the drawdown you have left, not the account balance. On a 50K prop account the number that ends you is the trailing drawdown, usually $2,000.

Inputs

How to use it

Set the share of remaining drawdown you will risk on one trade. 10 to 20% leaves room for five to ten losers in a row before the account fails.

"Full losses to the floor" counts how many full stop-outs at this size the account survives. Recalculate as the drawdown shrinks: the same stop takes a bigger share of a smaller cushion.

Tick values are per contract: ES $12.50, NQ $5, MNQ $0.50, CL $10, GC $10.