Chicago Trading
Jess Riefe
Derivatives Trader
John Day
Software Developer
John De Valk
Senior Engineer
John Hyunmin Kim
Software Engineer
John Mueller
Chief Of Staff Technology
Jonathan Beerhalter
Principal Software Engineer
Jonathan Liu
Senior Software Engineer
Jonathan Rosen
Senior Quantitative Trader
Jonathan Stoller
Principal Software Engineer
Jonathan Tyrpak
Derivatives Trader
Jon Stange
Market Data Business Analyst
Jose Corral
Technology Support Analyst