Stop loss trade
Family II · Orders
Not to be confused with stop limit order, stop order, trailing stop.
Stop loss trade refers to the execution of a protective exit: an order, resting with the broker, that becomes active only when the market touches a pre-set trigger price. It is attached to an open position rather than used to open one. Once triggered, it is sent to the market as a closing order, typically at market.
How a stop loss trade is placed and triggered
The trader selects a trigger price on the losing side of the current market and instructs the broker to close the position if that price trades. The order sits dormant until the trigger is reached; it does not appear in the visible order book as a resting limit order.
When the trigger is touched, the order is activated and executed according to its type. A plain stop loss trade becomes a market order, so the fill price is the best available price after activation, not the trigger price itself. In fast or thin markets the two can differ, a gap known as slippage.
Regulatory treatment of stop orders varies by jurisdiction and broker. Some venues do not accept stop orders at all, and some brokers restrict them to certain asset classes or sessions.
Worked example
Limits and common pitfalls
- Not a guaranteed price. The trigger price is a condition, not a promised fill; slippage can widen the loss beyond the intended amount.
- Gap risk. If the market opens beyond the trigger, the order activates at the first available price, which may be far from the stop level.
- Placement errors. A stop placed on the wrong side of the market can trigger immediately, closing the position at an unintended price.
- Broker rules. Minimum distance from the current price, permitted order types and session restrictions differ between brokers and regulators.
Often confused with
- stop limit order
- A stop-limit order pairs a trigger with a limit price, so after activation it fills only at the limit or better and may not fill at all; the visible sign is that two prices are specified instead of one.
- stop order
- A stop order is the generic instruction that becomes active at a trigger, while a stop loss trade is that same mechanism applied specifically to close an existing losing position; the visible sign is whether the order is attached to an open position.
- trailing stop
- A trailing stop moves its trigger with the market as the position gains, whereas a stop loss trade keeps a fixed trigger; the visible sign is a trigger price that changes over time.