Stocks trade above and below their actual value all the time for a whole variety of reasons. The fact that ZEN is trading below what many people who have followed it and done a lot of DD on it for the past few years will likely have no bearing on what the company will sell for if bought out. Put simply this is an opportunity to buy ZEN and make money. At least that is my opinion, but maybe you should do your own research and come to your own conclusions based on what you find.