What it is
When an investor places a market order, they are prioritizing immediate execution over price certainty. The order is filled at the prevailing bid price for a sell order or the ask price for a buy order. While execution is virtually guaranteed, the exact price may vary slightly from what was quoted at the moment the order was placed, especially in fast-moving or illiquid markets.
Market orders are a basic trading tool and are often contrasted with limit orders in discussions about trade execution and risk. News might cover instances where market orders placed during periods of extreme volatility resulted in unexpected prices for investors, leading to calls for better investor education. Understanding market orders is essential for comprehending how trades are typically filled and the trade-offs between speed and price.
Why it matters
Market orders ensure immediate execution but offer no price guarantee. Use them when speed is paramount, but be aware of potential price slippage.
Reviewed under editorial standardsUpdated September 26, 2026Not investment advice