Senate Banking Panel Holds Hearing On Computerized Trading
Eric Noll, executive vice president and head of transaction services at Nasdaq OMX Group Inc., right to left, Daniel 'Dan' Mathisson, head of U.S. equity trading for Credit Suisse Group AG, and Joseph 'Joe' Mecane, head of U.S. equities at NYSE Euronext, testify during a Senate Banking Committee hearing in Washington, D.C., U.S., on Tuesday, Dec. 18, 2012. NYSE Euronext and Nasdaq OMX Group Inc., their share of American equity markets squeezed by venues that sprang up in the mid-2000s, told legislators that too much trading occurs in dark pools, hurting investors. Photographer: Andrew Harrer/Bloomberg via Getty Images
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