Buffett's firm cuts Activision stake as Microsoft deal struggles

Warren Buffett's Berkshire Hathaway has cut its stake in 'Call of Duty' maker Activision Blizzard amid regulatory scrutiny of its deal with Microsoft. Berkshire sold 7.4 million shares, or 12% of its position, in Activision in the fourth quarter, regulatory filings showed. Berkshire also raised its stake in Apple to 5.8% by buying 20.8 million shares.