Trailing Drawdown Explained: EOD vs Intraday (And Why It Fails Traders)
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Drawdown is the loss limit that ends your prop firm account. Every firm has one; what separates them is whether the limit stays put or follows your equity upward. Misreading which type you're trading under is one of the most common ways funded accounts die, often while the trader is in profit overall.
The four drawdown types
Prop firms use four calculation methods, and we tag every firm in our directory with one of them:
- Static: the limit is fixed relative to your starting balance. A 50K account with a 10% static drawdown fails below $45,000, no matter how high the account climbed first. This is the most forgiving type.
- Trailing, end-of-day (EOD): the limit ratchets up with your closed balance, recalculated once per day at session close. Intraday swings don't move it.
- Trailing, intraday: the limit follows your equity peak in real time, including unrealized profit while a trade is still open. This is the strictest type, common at futures firms.
- Hybrid: the limit trails until a threshold (usually your starting balance plus a buffer), then locks and behaves like a static limit from there.
How a trailing drawdown actually moves
Take a 50K futures account with a $2,500 trailing drawdown:
- You start at $50,000. Your loss limit is $47,500.
- You make $1,000. Your balance peak is $51,000, so the limit trails up to $48,500.
- You give back $1,200, to $49,800. The limit stays at $48,500. It only moves up, never down.
Notice what happened: you're up $800 on your original deposit-equivalent, but you're now only $1,300 above failure. The drawdown "consumes" your early profit cushion. With a static limit, that same trader would still have $2,300 of room plus the full original buffer.
The unrealized-profit trap
The intraday variant has a failure mode that catches even experienced traders. Because the limit trails your equity peak, not just closed balance, an open trade that runs up and comes back can raise your loss limit without you ever banking a cent.
Example: your open position goes +$1,500 unrealized, then reverses and you close flat. Under intraday trailing, your equity peaked $1,500 higher, so your loss limit rose $1,500, permanently. You made nothing, and your room for error shrank by $1,500. Under EOD trailing, that same round trip changes nothing, because only the end-of-day balance is measured.
This is why the same "$2,500 trailing drawdown" number can describe two very different risk propositions. Always confirm which one you're getting.
The three questions to ask any firm
- When is it calculated? End-of-day or tick-by-tick? Intraday trailing punishes letting winners breathe; EOD gives you room to manage trades.
- Does it include unrealized profit? If yes, partial-profit-taking becomes a survival skill, not a style choice.
- Does it ever lock? Many firms stop trailing once the limit reaches your starting balance; from then on you're effectively trading a static limit. Firms that never lock keep you permanently one bad streak from failure.
Practical adjustments
Under a trailing drawdown, especially intraday: take partial profits earlier than your backtest says, since banked profit that raises the floor is better than unrealized profit that raises it anyway; keep position size flat until you've built a locked buffer; and treat the days right after a big winner as your highest-risk period: your cushion is at its thinnest relative to your recent peak.
Every firm profile in our directory lists the drawdown type, the exact percentages per challenge size, and any lock threshold, plus a log of when the firm last changed those rules.