
UnitedHealth’s stock is plunging on higher medical costs. That may mean trouble for more insurers
UnitedHealth Group‘s stock sank 20% on Thursday after the company slashed its annual profit forecast, citing higher-than-expected medical costs in its privately run Medicare plans. Those bleak results from a health-care giant seen as the insurance industry’s bellwether could be a warning sign for other companies with so-called Medicare Advantage plans, according to some Wall…