Morgan Keegan Maintains Outperform on athenahealth

Morgan Keegan is out with its report today on athenahealth

, maintaining Outperform. In a note to clients, Morgan Keegan writes, "While ATHN has shown a willingness to ramp sales and marketing spend as a percentage of revenue to sustain its 30% top line growth, we believe the company should not have to do that beyond 2011." Morgan Keegan maintains a $60 PT on ATHN. Shares of ATHN closed Tuesday at $41.04.