CNBC U.S. Contributors

Jon Najarian

Joe Najarian
Co-Founder, Najarian Family Office

Jon "Dr. J" Najarian was linebacker for the Chicago Bears before he turned to another kind of contact sport – trading on the Chicago Board Options Exchange

He became member of the CBOE, NYSE, CME and CBOT and worked as a floor trader for some 25 years. Today, he is a professional investor, money manager, lecturer as well as co-founder of Najarian Family Office and Rebellion Partners.

Jon developed and patented trading applications and algorithms used to identify unusual activity in stock, options and futures. His Heat Seeker™ has sniffed out takeovers in numerous stocks and his data has been requested and provided to law enforcement & securities regulators to find those guilty of insider trading.

Jon and his brother Pete founded TradeMonster and OptionMonster, which were rated "Best for Options Traders" by Barron's four years in a row. He developed the first online brokerage to deploy streaming, desktop-like trading in a web browser.

The brothers are founding members of Investitute.com, a financial education & subscription services company, as well as best-selling authors of both "How We Trade Options" and "The 22 Rules of Investing".

What does Jon Najarian do when he's not investing? Here's a look in our Halftime Report "Trade Off."

Follow Jon on Twitter: @jonnajarian

Disclosures as of 11/16/17:

Jon is long calls Apple, AbbVie, Alerian, Anadarko Petroleum, Bed Bath and Beyond, Best Buy, Cisco, Discovery Communications, Facebook, First Solar, Freeport-McMoRan, General Electric, GGP, Gilead, Glu Mobile, Corning, Hess, JD.com, MBIA, Mondelez International, Nektar Therapeutics, Occidental Petroleum, Procter & Gamble, Liberty Interactive, Signet Jewelers, Seagate Technology, Thor Industries, US Steel, XRT.

Jon is long puts XOP.