In this video, health care analysts David Williamson and Max Macaluso discuss some of the biggest movers at the end of last week. We have upgrades, downgrades, and clinical trial action impacting several popular stocks. Watch and find out why these stocks moved and what it means for investors.

Many investors to volatile small-cap biotechs since they hold the allure of substantial short term gains. But there is more than one approach to building long-term wealth and retiring well. In our free report "3 Stocks That Will Help You Retire Rich," we reveal some stocks that could help you as well as some winning wealth-building strategies. Click here to keep reading.