Tim received his Ph.D. in Mathematical Economics from The University of Chicago. He broke into the financial industry at O'Connor and Associates(one of the premier global option trading and market making firms -- based in Chicago),stayed on through the Swiss Bank Corporation (SBC), S.G.Warburg, Brinson, Dillon Read, Paine Webber, and UBS mergers, and retired as a Managing Director in 2006. He then worked at Chicago Trading Company (CTC) as an Executive Director until leaving there in 2016. From 1996 through 2010, he also taught in The University of Chicago's Graduate Program in Financial Mathematics. He continues to lecture and consult -- serving as an expert witness, primarily in legal cases and regulatory actions dealing with options and other derivatives. He maintains an affiliation with Advanced Analytical Consulting Group (A.A.C.G.) -- headquartered in Boston.