Implied Volatility - A measure of the volatility of the underlying stock. Read more about Implied Volatility.

Incremental Return Concept - A strategy of covered call writing in which the investor is striving to earn an additional return from option writing against a stock position which he is targeted to sell-possibly at substantially higher prices.

Index - A compilation of the prices of several common entities into a single number.

Index Option - An option whose underlying entity is an index.

In the Money - Any option contract that has intrinsic value. A call option is in-the-money if the underlying security is higher than the strike price of the call. A put option is in-the-money if the security is below the strike price. Read ALL About In The Money Options here.

Intrinsic Value - The value of an option if it were to expire immediately with the underlying stock at its current price. Read All About Option Pricing Here!