Glossary · Prop Trading
Trailing Drawdown: The Prop Firm Loss Limit That Moves Up
A trailing drawdown follows your best balance upward and never comes back down. Know which version your firm uses before you size a single trade.
Definition
Trailing drawdown A prop firm's maximum loss limit measured from the account's highest balance, so the level you must not fall below rises as the account makes new highs.
Also called Trailing max loss, Trailing threshold, Trailing loss limit.
Making money shrinks your cushion. That is the part new evaluation traders find strange, and it follows directly from how the floor is set: every new high balance drags the failure line up behind it, while a losing day leaves the line exactly where it was, so the distance between your equity and the floor only resets when you post a fresh peak.
A worked example
Take a hypothetical $100,000 evaluation with a $3,000 trailing drawdown, tracked at the end of each day. On day one the floor sits at $97,000.
The account gained $1,200. The floor gained $1,200 too. If day two closes at $100,000, the floor stays at $98,200, and you now have $1,800 of room where you started with $3,000. Nothing was lost overall. The rule still tightened.
The versions firms use
Firms word this rule differently, and the differences decide how hard the account is to keep.
- End-of-day trailing moves the floor only on closing balances. A trade that runs up during the session and comes back doesn’t move anything.
- Intraday trailing tracks the highest equity the account touches, open profit included. If an open position puts that same $100,000 account up $1,800 at its best and you close it flat, the floor may already be $98,800.
- Some firms stop the trail once the floor reaches the starting balance. In the example above that would happen after a close at $103,000, when the floor hits $100,000 and then sits still for good.
The intraday version is the strictest of the three. Giving back open profit costs you room even on a trade that ends at breakeven, which is why some traders take partial profits quickly on those accounts; the argument is made at length in why intraday trailing drawdown punishes giving back gains.
Sizing against a moving floor
Size each trade from the room you have today. On day two of the example, that room is $1,800. A trade risking $900 would take half of it, and two such losses in a row would end the account, even though $900 is less than a third of the original $3,000 drawdown.
Trailing versus static
A static drawdown never moves. On the same $100,000 account with a $3,000 static limit, the floor is $97,000 on day one and $97,000 on day forty, however well you trade. Every dollar of profit widens your room.
That makes a static rule easier to live with. You don’t get to pick, though. The firm sets the type, so what you can control is whether your trading style fits the one you’re under.
Where you see it on the screen
Most prop dashboards show a line labeled something like max loss, drawdown threshold or liquidation level. On a trailing account that number changes. Check it at the start of each session, since the figure that matters is the gap between your current balance and that line, and it can be smaller than you remember after a good week.
Some dashboards also show the high-water balance the floor is measured from. If yours does, watch that too.
What people get wrong
The common mistake is treating $3,000 as a fixed budget. It is only fixed until the first winning day.
A second is assuming realized profit is safe. On a trailing account, a strong week followed by an ordinary pullback can leave you closer to failure than you were on day one, even with the balance above where it started, because the floor has climbed while the balance slipped back.
A third is confusing the trailing limit with the daily loss limit. They are separate rules. Many firms enforce both at once, and breaking either can end the account.
Tracking the floor day by day
Write down your closing balance and floor every day, or let the prop firm drawdown calculator do it: enter the account size, the drawdown and each day’s close, and it shows where the floor sits and how much room remains. Doing this before you size the next trade keeps a single loss from being the one that crosses the line.
For how firms handle a breach and what happens next, see what happens when you break a prop firm rule. The prop trading desk collects the related rules in one place.
Readers also ask
Does a trailing drawdown ever stop trailing?
On some accounts it does. A common version stops moving once the floor reaches the starting balance, and from then on the floor stays fixed at that level. Other firms trail for as long as the account exists. Your account's rule page says which, usually in the section on maximum loss.
Is a static drawdown better than a trailing drawdown?
A static floor is easier to trade under, because profit widens your room and a good week can never leave you closer to failing. Whether it suits you better depends on the rest of the package, since account price, profit target and payout terms can differ between the two types. Compare the whole rule set.
Do open trades count toward a trailing drawdown?
Under an intraday version, yes. The peak is taken from equity including unrealized profit, so an open gain that disappears still lifts the floor. End-of-day versions look only at closing balances. Firms word this differently, so check whether yours mentions intraday, real-time or end-of-day tracking.