WBA and CVS and others are being manipulated by the big hedge fund managers/day traders. There is no reason to have this kind of volatility short of a bunch of big traders. It's WAY past time to start taxing stock trades!
Wow! - check out today's Chicago Tribune's article "NYSE alarm yields $750K" (in the Business section, page 1) that talks about illegal high speed trading. And yes, the fine should have been much higher!
Yeah, I've been watching WBA and CVS for years now. Investing in stocks used to be fun and interesting. Now that the day traders have access to hyper-fast computers, it's all pretty much a #$%$ shoot. They just play WBA against CVS. Watch the number of shares of each traded on a single day.