Earlier this year, the SEC adopted final rules establishing reporting requirements for market participants whose transactions in national market system securities equal or exceed two million shares or $20 million during any calendar day, or 20 million shares or $200 million during any calendar month. As we discussed last year, the SEC initially proposed such requirements in April 2010 to identify large market participants and collect information regarding their trades in order to be able to monitor the impact of large trader activity on the securities market.

The reporting requirements, effective as of October 3, 2011, are intended to provide the SEC with data to support its investigative and enforcement activities.

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