08:58 EDT MNTA theflyonthewall.com: Momenta Pharma valuation attractive, says Oppenheimer After meeting with Momenta's management, Oppenheimer believes that the company's M-enoxaparin may be the sole generic treatment approved. The firm thinks the stock is undervalued even if M-enoxaparin is one of multiple generics approved, and it predicts that the stock will increase dramatically if it is the sole generic. The firm maintains an Outperform rating