The bulls were all over Keryx Biopharmaceuticals and AEterna Zentaris Monday amid optimism about their Perifosine drug.
Financial news website Seeking Alpha said Friday that the market hadn’t realized the potential for the cancer treatment, and both stocks began the week with a bang. In the case of Keryx, someone apparently liked the news enough to sell 6,500 March 4 puts . Those were essentially insurance contracts on the stock price, so selling them represented a vote of confidence.