Stock Option Greeks

     "The Greeks" that investors often talk about are the different ways risks can be measured for any particular stock or option.

Option Delta - The delta of an option is how much the value of the option will go up if the underlying stock goes up one dollar.

Option Theta - Theta is the measure of daily "decay" of an option's value, which is the amount the option will fall in value given a flat trading day for the stock.

Option Gamma - Gamma is the amount the delta will change if the underlying stock goes up one dollar.