The NASDAQ OMX Group has announced that Chris Concannon intends to step down from his role as executive vice president of transaction services, U.S., effective April 30. Concannon will be joining Virtu Financial LLC, a newly formed proprietary trading firm, as a partner.

Jaclyn Jaeger is a freelance contributor to Compliance Week after working for the company for 15 years. She writes on a wide variety of topics, including ethics and compliance, risk management, legal,...