I've mostly been trading PYMX (but not in any size) rather than just holding it. Currently do hold a very modest position acquired around current prices.
MDCO-2010 is an antifibrinolytic, i.e. it inhibits the inhibition of clot formation, which thereby reduces blood loss. Paradoxically, MDCO-2010 is also an anticoagulant, but its anticoagulant activity is apparently weak enough to not cause a problem.