I actually like the buy on the bad news strategy some of my best returns have come that way though the window varies usually being able to act quick (having a descent understanding of the company before hand) is a key (at least if your cheap like me ). Two that come to mind are MNTA and TKT I can't take credit for either though. In the MNTA case I at least was a little familiar with the company and thanks to Dew's post explaining their was no "approvable" option along with having enough time to do some added DD before the stock recovered. TKT I had a great return on (but I can't take any of the credit a great biotech investor got me in on it!) was right after a disaster where the (former) CEO mislead about getting approved for a Fabry drug. I can still vaguely recall parts of that conference call where one of the analysts (maybe Jenniffer Chao) was yelling at the CEO something to the effect that you lied to us.