Momenta Pharmaceuticals, Inc. (MNTA)

[semi_infinite]

That's a strangle. The entity is hedging 300000 shrs and collected 0.85. It is a bet the the stock remains range bound between 10 and 12. It is a sensible bet if you don't expect SC nor the FDA to come up with anything by Nov expiration. Breakeven pt is 9.15 on the low side and 12.85 on the high side. This stock is regularly manipulated because it is so thinly traded and stops are easy to break. Someone is accumulating a lot of stock in the 10's. Probably the same entity that's doing the strangle.