November 11, 2010 – Executive search firm Crist Kolder Associates has placed Stephen A. Brodsky as chief financial officer of Spot Trading, LLC. Mr. Brodsky is the former president and CFO of the holding company for the Chicago Stock Exchange (CHX). He previously served as a managing director at private equity firm Vernon & Park Capital. Spot Trading, LLC is a technology-driven proprietary trading firm based in Chicago. Crist Kolder Associates focuses on CEO, CFO, COO, board of director and succession search for a broad range of industries.