Health services provider



was down about 14% this week after its fourth-quarter revenue came in below estimates. The company posted revenue of $3.4 billion, up from $3.0 billion a year ago, but below estimates of $3.53 billion. Sellers bid down the stock despite fourth-quarter earnings of $35 million, or 34 cents a share, up from 11 cents a share last year and ahead of the consensus analyst estimate of 33 cents. The company said in a press release that most of its larger clients had renewed their contracts, but didn't offer any specific future guidance.