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 BlackRock Says Hedge Funds Are Key as Diversification Falters in Volatile Markets Julie Segal How Short Sellers Are Surviving a Crazy Bull Market — While Waiting for It to End Michelle Celarier Unsustainable Debt: Is There a Path for Policymakers and Institutional Investors? Sponsored by Fidelity Investments