Haim Bodek is the founder of Decimus Capital Markets, LLC and Haim Bodek Consulting, which provides consulting services for financial institutions operating in the algorithmic and systematic trading space. He is an electronic trading executive and algorithmic trading strategist with 15 years of experience in the automated trading space.
He gained fame for exposing a little-known practice of HFT quantitative firms: the use of hidden order types that allowed HFT clients to have their orders at the top of the limit order books a much greater portion of the time. He discovered this while working at a quantitative fund, Trading Machines, which suddenly turned from being highly profitable to losing money daily. After consulting with tech and sales people from one of the exchanges, he learned that this new order type had been developed by them, with the help of some HFT clientele. When his firm began using the order type, they were back to profiting. The episode was chronicled in the book Dark Pools by Scott Patterson. 
He is the author of the book The Problem of HFT.
Bodek is also the founder of Trading Machines LLC, a high frequency options trading firm.
He previously headed the electronic volatility trading business at UBS investment bank.
Bodek earned a B.A. in Mathematics and Cognitive Science from the University of Rochester. He holds Series 3, 4, 7, 24, 55, 63, and 65.
Bodek spoke at the 2015 MarketsWiki Education World of Opportunity Summer Intern Education Series in New York.
A Flash Course on Market Structure
"In the market there are edges that are permissible, and edges that are impermissible. It is the impermissible ones that you should care about. If it doesn’t smell right, leave."
JLN News Feed
Euro Traders Betting on a Break of $1.10 This Month; Traders Line Up Bets Hong Kong’s Dollar Peg Will Snap
Nasdaq Announces End-of-Month Open Short Interest Positions in Nasdaq Stocks as of Settlement Date July 31, 2019
Confidence in the ag economy soars; producers confirm large prevented plantings of corn and soybeans
We visit more than 100 websites daily for financial news (Would YOU do that?). Read the John Lothian Newsletter.