Why Humana Stock Dropped Today

Shares of Humana (HUM -11.69%) are down 11.7% on Thursday after the health insurance giant announced weaker-than-expected quarterly results and light profit guidance for the coming year.Higher medical costs are eating into Humana's profitsHumana's fourth-quarter revenue grew 17.9% year over year to $26.42 billion, beating expectations for revenue closer to$25.6 billion. On the bottom line, however, Humana swung to a non-GAAP (adjusted) quarterly net loss of $0.11 per share, compared to net income of$1.97 ...