There isn't much to suggest these businesses are actually vulnerable.The market is a bit jittery right now thanks to a confluence of factors, including a weaker-than-anticipated U.S. jobs report, international geopolitical issues, and foreign currency disruptions -- all of which led to a sell-off on Aug. 5. It's reasonable for investors to be a bit nervous about committing more of their capital given the volatility and ongoing uncertainty.Nonetheless, I predict that loading up on a basket of biopharma stock ...