After the Activision Blizzard news hit the industry on Sunday, investors rallied behind the companies on Monday morning. Activision (ATVI) saw its shares jump $3.55, or 16 percent, to $25.70 on the Nasdaq, while rival publisher Electronic Arts (ERTS) watched its stock slide 91 cents to $55.29.

"This may fill a key hole in Activision IP, i.e. [massively multiplayer online games], provides stronger global distribution, provides positive margin structure and makes Activision more competitive," Morgan Stanley said, according to the Wall Street Journal.

Meanwhile, Vivendi, which takes a controlling stake (up to 68 percent) in the new Activision Blizzard entity, watched its shares increase three percent. In fact, French rival Infogrames and Ubisoft also watched their stock rise amidst speculation over further industry consolidation. Ubisoft shares climbed 6.8 percent and Infogrames shares increased 7.7 percent.