Why Clovis Oncology, Immunomedics, and Puma Biotechnology All Spiked Today

Healthcare stocks, on balance, had a great start to the week today. Cancer companies in particular posted strong gains almost across the board Monday. For instance, the stock of Clovis Oncology (NASDAQ:CLVS) ended the day up by 15.2%, shares of Immunomedics (NASDAQ:IMMU) hit a high of 10.2% before ultimately closing up by 8.5%, and Puma Biotechnology (NASDAQ:PBYI) printed a 16.3% gain today.