Depending on how well thought out the strategy is WRT to synergy and the vision and implementation thereof, of the new management. The stocks could either rise or plummet. The question is sort of broad though, can you be specific, it this ism't the point you were looking for.

M, "business" is about people working hard, exuding priding in what they achieve and trying further to uplift their organizations, the financial aspect of it, however, is all about the money (fees)superficial as it may sound. Yahoo, however may have shown that its really not about the money even though Yangs motives are vague at best, but I guess time will tell what the better decision would have been. Personally I do think that Yahoo will eventually surpass its current stock standings as the market remains competitive.