I had a nearly same experience with you when my company was acquired by Tencent. Most of employees don't know what's going on, but there are some strangers around in the office, actually another separate office. Only HR and finance people deal with those people from acquirer, they reviewed company contracts and some other legal paperworks. I saw there are lots of paper in their dedicated office. We engineers are the last one knows.
My supervisor called me to a meeting room, he let me first sign a non-disclosure agreement, or he can't tell me nothing. I had to sign that paper. Then he told me that the company was acquired, and you have choice to either leave or work for Tencent. If you want work for Tencent, you had to go over their interview and only talented people will get offer.
But actually 95% of my colleagues get offer, including me.
Based my back-testing of stock market, I found a similar conclusion: if a stock rise yesterday, then today the probability of raise > the probability of fall. P(raise) is about 50.1%, P(fall) is about 49.9%. Vice versa.
Having this theory means you can't rely on a single bet, you have to bets many many times to make profit from stock market. Even though I knew that, I am still working as a developer, I wish one day I have enough money to start stock career.
My supervisor called me to a meeting room, he let me first sign a non-disclosure agreement, or he can't tell me nothing. I had to sign that paper. Then he told me that the company was acquired, and you have choice to either leave or work for Tencent. If you want work for Tencent, you had to go over their interview and only talented people will get offer.
But actually 95% of my colleagues get offer, including me.