Shares of Herbalife (HLF -2.3%) finish the day well into negative territory despite a higher opening in response to an earlier upbeat research note from D.A. Davidson's Timothy Ramey, calling the company a best idea for 2013. Ramey cites a possible takeout bid or a potential deal for HLF to snap up a peer. He says growth could accelerate this year given that forex should be less of a drag, and sales out of China are likely to become a significant part of it's revenue model. The firm maintains a Buy rating with $72 price target over the near term, while its long-term target remains at $120.