Market Orders vs. Limit Orders
The plain answer
Section titled “The plain answer”A market order prioritizes getting the trade done. A limit order prioritizes the price.
A market order usually fills quickly, but its exact price is not guaranteed. A limit order buys only at your limit price or lower, or sells only at your limit price or higher, but it may never fill.
How it actually works
Section titled “How it actually works”When you submit a market order, your brokerage routes it to available buyers or sellers. The price you see on screen is only a quote; the market can move before execution. The difference between the expected and actual price is called slippage.
With a limit order, you set a boundary. A buy limit of $50 can fill at $50 or less. A sell limit of $50 can fill at $50 or more. Reaching the limit price does not guarantee a fill because other orders may be ahead of yours or too few shares may be available.
Orders can fill completely, fill partially, remain open, be canceled, or be rejected. A day order normally expires after the trading session. A good-til-canceled order remains active until it fills, you cancel it, or the brokerage’s expiration rule applies.
What this means for you
Section titled “What this means for you”For a heavily traded fund during normal market hours, a market order may be straightforward because the gap between available buying and selling prices is often small. A limit order provides more protection when an investment trades infrequently, prices are moving quickly, or you are placing the order outside regular market hours.
Before choosing, look at the bid, ask, and the gap between them. Decide whether completing the trade now or controlling the price matters more. Then check the order status after submission.
Common mistakes
Section titled “Common mistakes”- Believing a market order guarantees the displayed price.
- Believing a limit order guarantees execution.
- Setting a buy limit above the intended maximum or a sell limit below the intended minimum.
- Trading a thinly traded investment without checking the bid-ask spread.
- Forgetting that an open order may execute later.
- Replacing an unfilled limit order with a market order without reviewing current prices.
Related pages
Section titled “Related pages”Educational content, not personalized financial, tax, or legal advice. No affiliate relationships. Figures are for tax year 2026 and change annually.Read the full disclaimer.