SEC proposes rules to beef up oversight of high-speed traders

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The U.S. Securities and Exchange Commission voted unanimously on Wednesday to put forth a plan that will require high-speed proprietary trading firms to register with Wall Street's self-funded regulator.

The SEC's plan would subject more proprietary trading shops to oversight by the Financial Industry Regulatory Authority, a step that would require them to open their books and records to the regulator and potentially help bolster FINRA's market surveillance capacity.