Definition
A fill occurs when an order to buy or sell is executed. A complete fill means the entire order was executed; a partial fill means only some shares were traded. Fill quality depends on timing, price, and how much of the order was completed. Limit orders may not fill if the price isn't reached.
Example
Your limit order to buy 1,000 shares at $25 gets a partial fill of 600 shares, with 400 still waiting.
FAQ
What is Fill (Order Fill)?
The completion of an order to buy or sell a security.
Why is Fill (Order Fill) important?
Fill (Order Fill) helps investors evaluate trading mechanics and make more informed decisions.