How Does a Limit Order Work?
A buy limit at $50 fills at $50 or lower; a sell limit at $50 fills at $50 or higher. The order rests on the book until filled, canceled, or expired (day, GTC). If price never reaches your limit, you get no fill—by design. Partial fills are common when only part of your size is available at your price.
Limits provide price control; the tradeoff is missed trades when the market moves without you.
When Should You Use Limit Orders?
Pullback entries at support, profit targets at resistance, providing liquidity when you are not urgent, and trading illiquid stocks where market orders would slip badly. Swing traders often limit-buy at planned zones; day traders scale in with limits at VWAP or key levels.
When a breakout must be caught immediately, a marketable limit or stop order may beat a passive limit below market.
What Are Good-Til-Canceled and Day Limits?
Day orders cancel at session end if unfilled. GTC orders remain until filled or canceled—watch forgotten GTC bids that fill on unexpected reversals. IOC (immediate or cancel) and FOK (fill or kill) variants exist on some platforms for tactical use.
Review open orders before close and after vacations—stale limits are a common surprise fill source.
How Do Limits Interact With Stops and Targets?
Profit targets are often sell limits above entry for longs. Stop-limit orders combine stop trigger with limit floor on exit—prevents worst slippage but may not exit in a crash if price gaps through. Bracket orders pair entry limit with OCO stop and target.
Place limits at logical levels, not arbitrary ticks inside the spread where you will never fill during normal session liquidity conditions.
What Is a Marketable Limit Order?
A buy limit at or above the current ask (or sell at/below bid) behaves like a market order with a price ceiling—useful when you want urgency with a worst-case cap. Many platforms label this “market if touched” or similar; learn your broker’s terminology.
What Limit Order Mistakes Should You Avoid?
Setting buy limits above current market (use market or stop instead). Chasing with repeated limit raises without plan. Ignoring partial fills that leave unintended exposure. Using tight limits on volatile breakouts and then blaming “bad luck” for no fill.
Limits reward patience—if your strategy needs certainty of participation, complement with stops or marketable limits rather than hoping price returns to your level.