Warren Buffett’s Berkshire Hathaway Corporation has disclosed that it will acquire a stake in Activision Blizzard for nearly $1 billion in the fourth quarter of 2021. This came weeks before this video game maker agreed to a $75 billion deal with Microsoft, The Financial Times writes.

Berkshire Corporation disclosed the purchase of 14.7 million shares of Activision stock in a report on Monday night. Its investment in the maker of games such as World of Warcraft and Call of Duty was part of a relatively small asset adjustment during the fourth quarter of 2021. The $703 billion corporation has struggled to find attractive investments in recent years.

As for Berkshire’s acquired stake in Activision, it was valued at $975 million as of Dec. 31. Given the stock’s closing price of $81.50 on Monday, Buffett’s stake would be worth nearly $1.2 billion.

Activision’s share price is up 23% this year, well ahead of the broader market, reflecting the premium Microsoft has agreed to pay to take over the company. The deal will require approval from competition regulators, and Microsoft has promised to take steps to address potential problems.

Buffett is likely to provide an update on Berkshire’s investment when his company publishes a letter to shareholders and annual report in late February.

Bill Gates, the Microsoft co-founder who was once Buffett’s interim partner, stepped down from Berkshire’s board in March 2020. Buffett himself stepped down from the board of the Bill & Melinda Gates Foundation, the world’s largest private philanthropic organization, last year.

Berkshire’s board changed its composition on Monday after the company said Tom Murphy, one of its oldest directors, had decided to step down.

The company continued to get rid of stakes in several pharmaceutical companies such as AbbVie and Bristol Myers Squibb in the final months of 2021, according to the filing.