Flatten
To flatten a position means to close it completely, bringing the net contract count to zero. Flattening is different from a partial close or a hedge — it's a full exit, whether that's a single position, every position in one account, or every position across several accounts at once.
Flattening can be manual (a trader deciding to exit everything, often before a news event or the close of the session) or automatic (a platform or risk system closing positions on the trader's behalf when a rule is triggered).
Why it matters
Flatten is the mechanism behind two very different but equally important moments: a trader choosing to de-risk on their own terms, and a risk system stepping in to stop a loss from growing further when a limit is breached. Because a real flatten sends an actual closing order to the broker, its success depends on the broker accepting and executing that order — it isn't a local reset of what the screen shows.
For prop firm accounts, automatic flattening on a risk breach is often what keeps a bad session from turning into a blown account: the position gets closed and the account locked before losses can compound further, without requiring the trader to be watching in the moment.
In MimikTrader
MimikTrader auto-flattens an account's open positions when a real-time risk breach fires (trailing drawdown, daily loss or weekly loss), immediately followed by a lock — this is part of the Pro plan risk engine, not a manual step. A max daily trades breach also flattens, but it stops copying to the account until the next session instead of locking it. Separately, every user has two manual controls in the Cockpit: Flatten All (closes every position across every group) and Flatten Group (closes every position in one group). Both send real broker close orders — not a local UI reset — and a position only clears from the screen once its broker close actually succeeds. While an account is locked, the leader's orders are not copied to it, closes included; if the leader goes completely flat on a symbol, its position in that symbol is still flattened.
Example
Example: a funded account is up on the day when an open loss on a new position gives back enough of that profit to breach the account's profit-drawdown limit. The risk engine flattens the open position at the broker and locks the account — the trader doesn't have to take any action for the exposure to stop growing.
Related terms
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