Delta of an option: The rate of change of the value of an option with respect to the price of the Underlier, evaluated at the current market price of the underlier.

Gamma of an option: The rate of change of the option's delta with respect to a change in the price of the Underlier. Gamma measures the sensitivity of a delta-hedged position in an option to changes in the price of the underlying asset.

How to Ace Your First Test Managing Real Money in the Real World: As a teen, you're beginning to make some grown-up decisions about how to save and spend your money. That's why learning the right ways to manage money…right from the start…is important. Here are suggestions. More...

The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts. - Bertrand Russell