NEW YORK ( TheStreet) -- Health care company Humana ( HUM) was the worst-performing stock in the S&P 500 on Monday morning. The S&P 500 was falling 5.75 points, or 0.41%, to 1,397.61.
Shares of Humana fell 6.1% Monday morning to $82.46. The company reported first-quarter earnings of $248 million, or $1.49 a share, down 21% from year-earlier earnings of $315 million, or $1.86 a share. Analysts were expecting earnings of $1.52 a share. Humana also raised its full-year 2012 guidance to a range of between $7.55 a share and $7.75 a share from a previous range of between $7.50 a share and $7.70 a share. Analysts are anticipating earnings of $7.99 a share. Humana trades at an estimated price-to-earnings ratio for next year of 9.23 times; the average for health care providers is 17.23. For comparison, WellPoint ( WLP) has a lower forward P/E of 8.02. Thirteen of the 21 analysts who cover Humana rated it buy; eight analysts gave the stock a hold rating. Humana's stock has fallen 5.87% year to date. -- Written by Alexandra Zendrian >To contact the writer of this article, click here: Alexandra Zendrian >To submit a news tip, send an email to: firstname.lastname@example.org. >To follow the writer on Twitter, go to Alexandra Zendrian.