In this post-shooting and DOGE-era, regulators may be emboldened to make more changes than they otherwise would have on insurers that are seen to be fleecing the system,” explained one analyst.

UnitedHealth Group shares tumbled early Friday on a report that the U.S. Department of Justice has started an investigation into the health care giant’s Medicare billing practices

The health insurance giant has called a new report from WSJ "misinformation," but investors may not be so sure. Shares were down about 9% early Friday.