Interesting glass. Now I understand your reply to my post yesterday. :)
I don't know if that is the reason but it seems plausible. However, why doesn't Ariad go up on every bad market day? I remember two other bad market days this month. One where Ariad went up against the market on no news like today. The other where Ariad went down with the overall market on no news. So, I haven't quite figured this out but your suggestion might be part of the equation.
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