Slippage
Trade MechanicsThe difference between the price you requested and the price your trade actually filled at, common during fast-moving markets.
Slippage happens when a trade executes at a different price than the one requested, usually because the market moved between the moment an order was placed and the moment it was filled. It's most common during high volatility or around major news releases.
Slippage can work against you (negative slippage) or occasionally in your favor (positive slippage). Market orders are more exposed to slippage than limit orders, which only fill at the specified price or better.
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