1. no defense dept renewal/extension? 2. naked shorts by hedges? 3. poor bavi data? 4. one of the big scientists exiting? 5. retail investor stops being hit since volume isn't too big today? --- Is that the worst you could imagine? :-)
We should have a contest for theoretical bad news that could affect us. My entry:
"6. Data to government delayed because mice in Lassa Fever experiment escaped from Biosafety Level 4 lab and have not yet been located."