At a time when U.S. enforcement authorities and regulators are more closely scrutinizing insider trading in the prediction-markets space by public-company employees, another alleged insider-trading case is unfolding, this time concerning a KPMG employee.

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,...