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Market Intelligence › Basic Terminologies
How much does your order move the price?
Published by The Retail Trader · JUL 31, 2026 · Order Flow
Impact Cost — How much your order moves the price. It increases in larger size and thin liquidity.
This term comes under Order Flow, in the section "REALITY CHECK OF EXECUTION". Things that are not visible in the backtest, but are visible on the live account:
Other terms in this group — understanding them together is more useful:
• Slippage
• Partial Fill
• Illiquid Stock
• Freeze Quantity
• Order Rejection
• Contract Note
• Peak Margin
To read the entire group and all its examples in one place, see the journal "ORDER FLOW: FROM ORDER TO EXECUTION" - this term is taken from there.
This entry is for educational purposes only and is not a recommendation to buy or sell. Exchanges change charges, margins, lot sizes and expiry rules from time to time, so verify any figures with your broker or exchange.