U.S. Department of Health and Human Services building, Washington, DC.

The Securities and Exchange Commission is reportedly conducting three investigations into whether leaks from the federal agency that runs the massive Medicare program led to stock moves on Wall Street in advance of regulatory actions by that agency.

The SEC has questioned almost a dozen officials with the Centers for Medicare and Medicaid Services as part of the insider-trading probes, one of which also involves the Federal Bureau of Investigation, The Wall Street Journal reported in a front-page story Wednesday.