Daily Loss Limit
A daily loss limit is the maximum an account is allowed to lose in a single trading day before trading is halted for that day. It's measured from the day's starting equity down to a stop level; once realized and open losses reach that level, the account is done until the next session resets the counter.
There are two kinds. A firm-imposed daily loss limit is a hard rule baked into a funded or evaluation account — hit it and the platform stops you, no negotiation. A self-imposed daily loss limit is a number a trader sets for themselves; it only works if they honor it, which under a losing streak is exactly when discipline tends to fail.
Why it matters
The daily loss limit is the rule that separates a bad day from a blown account. Prop firms enforce it precisely because revenge trading after a couple of losers is the single most common way traders destroy an otherwise viable account. A hard limit removes the decision at the moment you're least able to make it well.
For copy traders running many prop accounts at once, the limit matters more, not less. If one leader signal drags several followers red on the same day, a per-account daily loss limit stops each account independently before a single bad session cascades across the whole book. The gap between a limit you have to obey by willpower and one the platform enforces for you is the gap between a rule and a wish.
In MimikTrader
MimikTrader enforces a daily loss limit as a live rule, not a warning. When an account's loss for the day reaches the configured limit, the account moves to liquidate-only, all open positions are flattened at the broker, and the account locks against new opening trades. You get a clear notification and an activity-log entry naming the cause. Closing and reducing always go through, so a lock never traps you in a position.
Unlike a trailing-drawdown lock, a daily-loss lock self-clears at the daily reset (5:00 PM Central Time) — the next session starts clean with no support ticket needed. The counter itself is projected to zero at the reset so a missed rollover can never phantom-block you the next day. Daily loss limits are part of the Pro plan's risk suite.
Example
Hypothetical: an account with a $1,000 daily loss limit. It's down $850 realized on the day and holding one open ES contract showing a -$200 open loss. Combined, that's -$1,050, past the $1,000 line. The account flattens the ES position, locks against new entries for the rest of the session, and reopens automatically at the 5:00 PM CT reset.
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