All Or None (AON) Definition.

An all-or-none (AON) order is an order to buy or sell a security that must be executed in its entirety, or not at all. This type of order is often used by investors who do not want to partial fill their order. For example, an investor places an all-or-none order to buy 1,000 shares of … Read more

What Is Pro Rata and How Do You Calculate It?

What Is Pro Rata? Pro rata is a Latin term meaning “in proportion.” It is often used to describe how something is split up or distributed based on a percentage or proportion. For example, if you are splitting a bill equally with three other people, each person would pay one-fourth, or 25%, of the bill. … Read more