You pick a size the week can survive.

How many losing trades fit in the room you have

With $150 at risk each time, the account can be wrong 13 times in a row before it runs out of room. At $300 it is 6.

Apex Trader Funding $50K evaluation, floor moves on every new high — published rules read 2026-07-14, spec 1.2.0

At one contract, the room you have left lasts four points of price going against you. You decide to hold two contracts instead. How many points does the same room last now?

Put these in the order they happen when you plan one trade.

1. 1Work out where the line sits right nowMove “Work out where the line sits right now” one place earlier↑Move “Work out where the line sits right now” one place later↓
2. 2Take the line away from what the account is worth — that is the roomMove “Take the line away from what the account is worth — that is the room” one place earlier↑Move “Take the line away from what the account is worth — that is the room” one place later↓
3. 3Decide how much of that room one trade is allowed to costMove “Decide how much of that room one trade is allowed to cost” one place earlier↑Move “Decide how much of that room one trade is allowed to cost” one place later↓
4. 4Pick the number of contracts that fits bothMove “Pick the number of contracts that fits both” one place earlier↑Move “Pick the number of contracts that fits both” one place later↓
5. 5Pick the price that would mean you were wrongMove “Pick the price that would mean you were wrong” one place earlier↑Move “Pick the price that would mean you were wrong” one place later↓