What Acquisitions and Mergers are waiting for regulatory approval for the stock to pop?

I jumped ship on Microsoft’s Acquisition of Activision with a small bump. MSFT offered 95/share, but has headwinds enough I decided the risk of the FTC blocking it was too much. It’s an interesting style of play to me.

Are there any other similar, all-cash deals going on where regulatory pressure is holding back the stock price?