Market Order
An order to buy or sell immediately at the current market price — instant execution, no waiting.
During the Apr 2024 NFP release, a trader using a market order on EUR/USD got filled 18 pips worse than the screen showed because the spread blew out to 25 pips for 3 seconds.
Related terms
Limit Order
beginnerAn order to buy or sell at a specific price or better — guarantees price, not execution.
Stop Order
beginnerAn order that becomes a market order once price reaches a specified trigger level — used to enter on a breakout.
Bid / Ask
beginnerThe bid is what the market will pay you to sell; the ask is what the market will charge you to buy.
Spread
beginnerThe difference between the buy (ask) and sell (bid) price — your cost of entering a trade.
Slippage
intermediateThe difference between the price you expected to get on an order and the price you actually got — usually worse.
Immediate or Cancel (IOC)
advancedAn order that fills as much as possible immediately, then cancels the unfilled portion — no resting orders.