Skyrocketing from $11/share to $15/share? Huge jump, surely this is not a desperate scheme by the Guillemot family mafia that own Ubisoft.

Typical market manipulation. If they had any real consideration of buying out the company we wouldn’t even know about it. Such discussions happen behind closed doors and don’t come public until the offer has to be put on the table (or it becomes old news and nobody cares if it gets public). It was all just to bring up the stock price, so the situation wouldn’t look that desperate.