Copy the same lot size onto a static-drawdown account and a trailing-drawdown account, and you are running two different risk profiles without realizing it. The trailing account can breach on a trade the static account shrugs off.
Static vs trailing: two different floors
Every funded account has a loss floor — the equity or balance level that ends the account if you touch it. The difference between account types is entirely in how that floor moves.
- A static (fixed) drawdown sets the floor once, usually relative to your starting balance, and it stays put. As you profit, your distance to the floor grows. It never rises to chase you.
- A trailing drawdown ratchets the floor upward as your account makes new highs. Some firms trail on closed balance, others on intraday equity including open profit — a distinction that completely changes how close you actually are to breaching mid-trade.
That second flavor is the dangerous one, because the floor can climb right up behind a winning position and then lock in when the trade retraces. If you have never mapped exactly how your firm calculates it, start with the mechanics in trailing drawdown and confirm the specifics with your firm — the trailing method varies by firm and even by account tier.
Same trade, different breach distance
Here is why one lot size across both account types is a mistake. Risk is not the lots you trade — it’s the distance to your floor. Two accounts holding the same position can sit at very different distances from the point of no return.
Imagine a fresh static account and a trailing account that has already run up and pulled its floor tight beneath a recent high. The same stop, in the same instrument, at the same size:
- On the static account, that stop might be a small fraction of the room to the floor.
- On the trailing account, the same stop might be most of the remaining room — because the floor already climbed toward your equity.
Identical trade, wildly different breach probability. A copier that blindly mirrors lots is quietly running your tightest account into the ground while your loosest one barely notices. The number you have to normalize is percent of remaining distance-to-floor risked per trade, not raw lots. A prop-firm drawdown calculator is the fastest way to see, per account, how much room you actually have right now.
Per-account sizing overrides
Normalization means each account gets its own position size derived from its own current floor distance — even though they all express the same directional signal from the same strategy.
The workflow:
- Fix a risk unit for the strategy — say, a consistent slice of distance-to-floor per trade. This is your one honest number, the same idea across every account.
- For each account, read its current distance to floor (static: fixed; trailing: recompute after every new high).
- Solve for the lots that make that account’s dollar risk equal your chosen slice of its room.
- Send that per-account size, not a shared one.
This is exactly where a naive “mirror” copier fails and a risk-aware one earns its keep. Shibiki sizes each copied account against its own live floor and pushes a hard risk limit enforced at the broker, so even if a trade behaves badly, the tightest trailing account can’t be dragged past its line by a size that was really meant for a roomier static account.
Building a mixed-portfolio risk table
When you run several accounts at once, keep a single table that makes each one’s floor and sizing legible at a glance. Recompute the trailing rows after every new equity high — the whole point is that their floors move.
| Account | DD type | Trail basis | Distance to floor | Risk/trade | Sized lots |
|---|---|---|---|---|---|
| Apex Trader Funding | Trailing | Intraday equity | Recompute at each high | 1 unit | Solve per row |
| The5ers | Static/hybrid | Fixed floor | Constant | 1 unit | Solve per row |
| Static challenge | Static | Fixed floor | Grows with profit | 1 unit | Solve per row |
The columns that matter are DD type and trail basis — they tell you whether a row’s floor is standing still or chasing your equity. Two accounts on the same strategy with the same risk unit will legitimately show different sized lots, and that difference is the normalization working, not a bug. Always verify each firm’s actual trailing basis and floor mechanics before you trust a row; the labels above are illustrative.
Watching each floor independently
Normalization is not set-and-forget, because the trailing floors keep moving. Between trades you need to watch each account’s floor separately:
- After every new high on a trailing account, its floor ratchets — so its safe size for the next trade shrinks unless distance recovers.
- A static account’s safe size drifts up as profits bank room beneath you.
- Portfolio heat — total risk live across all accounts at once — has to respect the tightest floor in the group, not the average.
Shibiki tracks each account’s floor live and re-sizes the next copied order accordingly, so a strategy you trust can be scaled across static and trailing accounts without the trailing ones silently becoming your riskiest bet. Confirm every floor rule with your firm first — then let per-account sizing carry a single edge safely across a mixed book.
Related: Trailing drawdown · Prop-firm drawdown calculator · Apex Trader Funding