Good point, however, that's assuming 2 things.
a) That you're a person that looks back after you sell a stock
b) You don't take the info you know about the potential, and buy stock in the acquiring company..
For me, if I sell COR for a profit or break even, I'll never look back.. even if I sell for a loss...
Also, if I feel COR gets bought at a bargain basement price, I'm going to ad some shares of the acquirer ..
Cheers..