Your winner tightens your loser’s leash

On most prop accounts the drawdown limit follows your unrealized profit up and never comes back down. Here is what that costs, in dollars, on a trade that ends flat.

Every prop account has a number that ends it. Not a margin call — a line underneath your balance that, if you touch it, closes the account. What almost nobody explains before you pay the fee is that on many products that line moves up while your trade is still open, and it does not move back down when the trade closes.

The mechanic

A trailing threshold tracks your account's high-water mark and sits a fixed distance below it. The question that decides everything is whether the high-water mark is measured on your closed balance or on your equity including open profit.

If it tracks open profit, then a trade that goes your way and then does not permanently raises the floor that everything else must stay above.

Hypothetical worked example. You start with the full $2,000 of allowance. One trade runs to +$800 of open profit, reverses, and stops out at −$300.

If the threshold tracked unrealized equity, you now have $900 of allowance left. If it tracked closed balance, you have $1,700.

The ratchet cost you $800 — 40% of the entire budget — for zero realized profit.

Why this is the most expensive thing you can not know

Notice what the trade did. It was a small loser. On a normal account it costs you $300 and you carry on. On a ratcheting account the same trade removes nearly half your remaining life, and it does it through the part of the trade that went in your favour.

This is why traders on these accounts describe a pattern they can't explain: they are roughly break-even on the month and yet the account is nearly dead. Nothing is broken. Every winner they gave back moved the floor up behind them.

It is not universal, and the difference is worth money

Some products track unrealized equity. Some settle the threshold once a day on the closed balance. Some lock the threshold into a static floor once the account is far enough ahead, and stop trailing altogether. These are not small print — they are different games with the same name on the tin.

It applies to Apex Intraday, Bulenox Option 1, PropShop Intraday, Take Profit Trader PRO and similar products, and not to end-of-day designs. Apex states it plainly in its own rulebook — “Does unrealized profit move the Trailing Threshold? Yes.” Topstep markets against the design and settles end-of-day instead. Check which one your account is before you do anything else.

We have no financial relationship with any of those firms — no affiliate links, no referral codes, no revenue share. They are named because their published rules are the clearest illustration of the mechanic, and because you can go and verify every word of it. Firm rules change without notice, so verify the account you actually hold rather than trusting this page.

What to do before you place another trade. Open your firm's rulebook and answer three questions in writing:

1. Does unrealized profit move my threshold?
2. Is the threshold evaluated intraday, or once at settlement?
3. Does it stop trailing at any point — and at what balance?

If you cannot find all three answers, ask support and keep the reply. An account whose failure condition you cannot state precisely is one you are trading blind.

What it changes about how you should trade

If your threshold ratchets on open profit, then giving back an open winner is a real cost, not a missed opportunity. That single fact reorders what matters. Entry quality — the thing everyone optimizes — matters less than what happens to a trade after it is already up. It is the reason we judge our own engines primarily on how much of a peak they keep rather than on net profit, which is its own subject.

And it is the reason the honest answer to “how many strategies should I run in this account” is lower than you think.