Evaluation max open size is the largest position an FPT Scale evaluation account may hold: $1,000 on the $25k, $2,000 on the $50k and $3,000 on the $100k.
A second limit applies at the same time. No position may exceed 5% of that market's trailing 24-hour volume. Your allowed size in any given market is the lower of the two.
The Limits by Account Size
| Account | Evaluation max open size | Market-volume cap | Allowed position size |
|---|---|---|---|
| $25k Scale | $1,000 | 5% of trailing 24h volume | The lower of the two |
| $50k Scale | $2,000 | 5% of trailing 24h volume | The lower of the two |
| $100k Scale | $3,000 | 5% of trailing 24h volume | The lower of the two |
Notice that on every size the evaluation max open size equals the account's maximum loss. That is not a coincidence — it means a single maximum-size position, if it went to zero, would take the account exactly to its starting floor.
Worked Examples — the Lower of Two Numbers
$50k account, deep market. The market has $80,000 of trailing 24-hour volume. 5% of that is $4,000. Your account limit is $2,000. The lower figure governs, so you may hold $2,000.
$50k account, moderate market. The market has $30,000 of trailing 24-hour volume. 5% is $1,500, which is below your $2,000 account limit. You may hold $1,500.
$25k account, thin market. The market has $12,000 of trailing 24-hour volume. 5% is $600, below your $1,000 account limit. You may hold $600.
$100k account, thin market. The market has $12,000 of trailing 24-hour volume. 5% is still $600. The $3,000 account limit is irrelevant here — you may hold $600. A larger account does not unlock a thin market.
The volume figure is the market's own trailing 24-hour volume, so the same account can have a different allowed size in every market it looks at, and that size changes as the market's volume changes.
What Happens When You Exceed It
Orders that would breach the allowed size are blocked by the trading system. They are not accepted and then penalised after the fact. A blocked order is the rule working correctly, not a violation on your record.
If an order is refused, the usual causes are:
- The order would take your total exposure in that market above your account's max open size.
- The market's trailing 24-hour volume is low enough that 5% of it is below your intended size.
- The market is thin, in resolution, or under a temporary restriction. See Market Availability and Thin Markets and Temporary Market Restrictions.
- The market is close enough to its explicit expiration that late entry is restricted. See Market Expiration and Late-Entry Restrictions.
What You Must Not Do
Splitting a position to get around the limit is prohibited, even where each individual order passes the platform's check. That includes spreading the same exposure across multiple orders, across near-identical markets, across sub-markets of the same event, or across separate FPT accounts.
Choosing a market primarily because it is thin enough to move rather than because you have a view on the outcome is also prohibited. Both are covered in Good-Faith Trading and Prohibited Conduct.
How Fills Are Simulated
FPT's simulated fills consider live market price and available liquidity. FPT does not promise a fill at a stale price, and any estimated slippage or price impact shown before you commit is an estimate and is not guaranteed.
This is why the 5% volume cap exists at all. A position that is large relative to a market's real volume would not fill at the screen price in that market, and a simulation that pretended otherwise would produce a result that could never be repeated. See How Simulated Fills Are Determined and Estimated Slippage and Price Impact.
Max Open Size Is Different When Funded
The funded stage does not continue the evaluation limits. A funded account starts lower and scales up on each approved payout:
| Account | Evaluation max open size | Funded starting max open size |
|---|---|---|
| $25k Scale | $1,000 | $500 |
| $50k Scale | $2,000 | $1,000 |
| $100k Scale | $3,000 | $1,500 |
That step down is intentional. Real payouts are being made from the funded account, so the program starts conservatively and widens the limit as the account proves itself. The full progression is in Scaling Tables by Account Size and Funded Starting Max Open Size.
Sizing Sensibly Inside the Limit
The limit is a ceiling, not a target. On the $50k account, a full-size $2,000 position that resolves to zero takes you from the starting balance to the starting floor in one move — a single trade ends the evaluation. Most traders who pass work at a fraction of the ceiling and let the five profitable days accumulate.
Still Need Help?
If an order is blocked and none of the reasons above seems to apply, email support@fundedpredictiontrader.com with the market, the intended size and the approximate time.