Keith Waehrer is a Managing Director at Secretariat Economists based inWashington, DC. He has worked on some of the highest profile antitrust litigations in recent years—State of New York et al. v. T-Mobile-Sprint, FTC v. Qualcomm, United States v. AT&T-Time Warner, and United States of America et al. v. American Express Co. et al.—and on significant mergers—E.I. DuPont de Nemours & Co. and Dow Chemical Company, United Technologies Corp. and Rockwell Collins, and Comcast and Time Warner Cable (abandoned). Dr. Waehrer has authored a number of highly regarded academic publications including on the analysis of competitive effects in auction markets and the impact of overlapping minority shareholdings on competition. His published and unpublished papers can be found at http://waehrer.net/.