The Wizard computes a default Edge% based on two factors:

1. Your effective stack size in big blinds.
2. Your position relative to the big blind.

Your effective stack is the largest amount you can lose on the hand when it is your first turn to act.

When your effective stack (measured in big blinds) is large, your Edge% generally needs to be large to reduce variance. When your effective stack is small, your Edge% generally should be small (or even negative) because you need to take even the smallest advantage.

When your effective stack is small and you are getting close to hitting the big blind, your Edge% should be even smaller (or even more negative) because you situation is becoming more disparate.

The default edge calculation can be completely customized to fit your style of play by using the Edge Editor. Select “Edge editor…” on the Tools menu to edit the default edge. See “Default Edge” in the help reference section for more details.

The edge editor (click to enlarge).