Option Delta

101 Arch Street, Suite 601 Boston, Massachusetts 02110 BOX Exchange LLC (BOX) is a national securities exchange registered with the Securities and Exchange Commission (SEC) under Section 6 of the Securities Exchange Act of 1934. It is a fully electronic options exchange that offers trading in U.S. equity options. BOX Exchange is operated by BZX…

This is a measure of Historical Volatility computed as the annualized standard deviation of returns over a period of days (20, 30, 90 days). See also Implied Volatility & Historical volatility

This is when you sell a call and buy a call with a higher strike price. A Bear Call Spread is used when you have a bearish outlook on a stock and you want to bet against it by going short but you don’t want to shirt the stock because it theoretically has unlimited risk….

If you sell a certain type of option and you already have or get the thing you’re supposed to sell through that option, you’re called a covered call writer. EXAMPLE: An individual owns 100 shares of XYZ common stock. If she writes one physical delivery XYZ call option—giving the call holder the right to purchase…

This is when you enter into a position by purchasing one part of the spread at a time rather than buying it all at once. Legging can improve the risk-reward of the trade if the underlying stock moves in the right direction. If not, it can reduce the potential loss.

In the case of a physical delivery option, the exercise price (which is sometimes called the “strike price”) is the price at which the option holder has the right either to purchase or to sell the underlying interest. EXAMPLE: A physical delivery XYZ 40 call option gives the option holder the right to purchase 100…