AON (All Or Nothing)

AON, or All Or Nothing, is a type of order used in trading and investing. When you place an AON order, you're instructing the broker to buy or sell a security only if they can do so entirely at your specified price, with no partial fills. If the full amount cannot be completed at once, the order remains unfilled until it can be executed in full. This approach ensures you get the complete quantity at your desired price, but it might take longer to fill or not execute at all if the conditions aren't met promptly.