updated 5/10/2010 11:43:09 AM ET 2010-05-10T15:43:09

Senior executives from NYSE Euronext, Nasdaq OMX Group Inc and CME Group Inc will testify to a congressional panel on Tuesday on last week's shock sell-off in the stock markets, according to a witness list obtained by Reuters.

Slated to testify are NYSE Euronext Chief Operating Officer Lawrence Leibowitz, CME Executive Chairman Terrence Duffy and Nasdaq Transaction Services Executive Vice President Eric Noll, according to the list.

Also appearing will be U.S. Securities and Exchange Commission Chairman Mary Schapiro and U.S. Commodity Futures Trading Commission Chairman Gary Gensler, it said.

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