Video game giant Activision-Blizzard (ATVI) has agreed to be purchased by Microsoft (MSFT) for $95 per share. However, the government may thwart the proposed deal due to antitrust concerns. That’s why the stock is trading in the low $70s instead of near the buyout price. One trader appears to have decided that the ATVI share price doesn’t have much more downside through the first week of December.