Fill
The execution of an order — the moment shares actually change hands at a specific price and quantity. A strategy's real-world results are the sum of its fills, which is why platforms journal every fill with its price, size, and the rule that ordered it, and reconcile them against broker records.
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Related terms
Market OrderAn instruction to buy or sell immediately at the best available price.…SlippageThe difference between the price a strategy expected and the price it …
Backtests are hypothetical, computed by DeployQuant's engine on minute-resolution consolidated US market data (2021-01-04 to 2026-07-17, $10,000 starting capital, no margin, fees and slippage not modeled) and do not guarantee future results. Nothing on this page is investment advice. Live trading involves risk of loss.