If you really have inside info--(you have to make sure that the company BUYING the other company is purchasing ALL the shares available---I am not going to go into why (it will be 3 pages long)-but if it is a complete buyout I would buy as much as I could----the best thing to find out is if the higher ups are doing the same...the higher up the ladder you go, if you see insiders buying that stock you will get the real picture...........