Nasdaq says No. 2 executive leaving company, going to ConvergEx

NEW YORK (Reuters) - Nasdaq OMX Group <NDAQ.O> said its No. 2 executive, head of transaction services Eric Noll, is leaving the company to become president of brokerage ConvergEx Group immediately and eventually its next chief executive.

Nasdaq said it would assess internal and external candidates for Noll's replacement, and plans to fill that role near the end of the first quarter of 2014.

(Reporting by John McCrank; Editing by Gary Hill)