Once again I seem to have underestimated how Wall Street's love of a good story can overpower and outweigh the likely long-term economic returns from that story. In the case of Edwards Lifesciences (EW), I have never doubted that transcatheter aortic valve replacement (TAVR) (also called "... valve implantation" or TAVI) was going to be successful, nor that Edwards' Sapien would be a major player.
What I doubted was whether Wall Street would keep pumping up the valuation it was willing to pay. With Edwards being one of the relatively few double-digit organic growth stories in med-tech, the stock is up about 30% since my last skeptical piece - not all that much better than other med-tech...