Elkins/McSherry - Market Impact Trend Global Transaction Costs Decline Despite High Frequency Trading. November 11, 2010 See related article, Elkins/McSherry - Global Transaction Costs Decline Despite High Frequency Trading. High Frequency Trading New York Stock Exchange Transaction Costs Nasdaq Elkins Mcsherry Global Trading Related Articles Bryn Mawr’s CIO on Liquidity and Navigating Market Turbulence James Comtois Georgetown Names Lehigh Investment Chief to Oversee $4B Endowment James Comtois Podcast: Uncovering Opportunities in Direct Real Estate Sponsored by Fidelity Investments