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Stop-Loss Order: An Automatic Exit When a Trade Goes Wrong

By Imperialpedia Staff

A stop-loss order is a standing instruction to sell a security once its price falls to a predetermined level, designed to cap losses on a position without the investor having to watch the market constantly. It sits dormant until the stop price is hit, at which point it typically converts into a market order to sell.

Stop Orders vs. Stop-Limit Orders

A standard stop-loss becomes a market order once triggered, meaning it will sell at whatever price is available, which isn't necessarily the stop price itself. A stop-limit order instead converts into a limit order once triggered, guaranteeing a minimum sale price but risking that the order doesn't fill at all if the price gaps past the limit.

The Gap Risk in Fast Declines

Stop-loss orders work best when prices move gradually. During a sharp overnight drop or a sudden news-driven selloff, a stock can gap straight past its stop price, and the order fills at whatever price is next available, sometimes well below the level the investor intended.

Setting a Stop Too Tight

A stop set too close to the current price can trigger on normal day-to-day noise rather than a genuine trend reversal, closing out a position that would have recovered. Many traders set stops based on a stock's typical volatility range rather than an arbitrary percentage, to avoid getting shaken out of a position prematurely.
IMPORTANT
A stop-loss limits downside but doesn't eliminate it — in a fast-moving or illiquid market, the actual execution price can land well below the stop price you set.

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