Mark Sebastian

Mark Sebastian

Mark Sebastian is a former market maker on the Chicago Board Options Exchange (CBOE) and the American Stock Exchange (AMEX) and is currently the Director of Risk for a private hedge fund.

He writes a popular blog, Option911.com, where he posts his insight on the market multiple times a day. Mark’s writing can also be found in Expiring Monthly: The Option Trader’s Journal, which was launched in March 2010.

In Q2 2010, Mark became the Director of Education at OptionPit.com, a new education service that specializes in trade structure, risk management and efficient use of capital.

Recent Articles

How to Trade With Better Than 50/50 Odds

By Mark Sebastian

Option trades with better than even odds are rare, but they do exist.

Time to Get Long Citi? Goldman Thinks So

By Mark Sebastian

Citigroup Inc. (NYSE: C) saw an incredible surge in call volume Wednesday, and this options activity says someone is very bullish on the battered banking stock.

8 Things You Must Do Before Expiration Day

By Mark Sebastian

Expiration trading provides a lot of opportunity, but it's not as easy as you think. Get tips for managing expiring options positions.

3 Tips for Trading Options Around Earnings

By Mark Sebastian

There is no 'best' earnings trade, but there are ways to move the odds in your favor.

A Cheap Way to Protect Your Portfolio From Market Crashes

By Mark Sebastian

Find out how to use inexpensive options to protect yourself and even profit when the market tanks.

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