Your point is valid, though we become more immune with every trade. We are seeing a big seller or two today, and when that is all done, we'll be moving up. We're just a few trading hours into the next 10 days and we'll be moving up once the sellers are done, and that could happen in a blink if a big buyer or two shows up.
I think Ariad will perform better than the market when the market is performing to the upside, and track the market to the downside. Until there is real news, it's going to do just that.