BMY/AZN—If you can't say whether a positive MYSTIC result is positive or negative for BMY, then it logically follows that you can't say whether a negative MYSTIC result is positive or negative for BMY. So, it seems odd (but not impossible) that a rumored decision by AZN's CEO to change jobs would cause a sudden sell-off for BMY.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”