(This story is for CNBC Pro subscribers only.) Warren Buffett's Berkshire Hathaway revealed it owned 18.9 million shares of Kroger at the end of the fourth quarter, sending shares of the grocery story surging in after-hours trading. Here's what else the Oracle of Omaha is betting on: The investor revealed a new stake in Kroger worth $549 million, according to the company's 13-F filing. The filing documents his holdings as of end of December. Shares of Kroger jumped as much as 6% in after-hours trading on Friday. Berkshire also added a small bet on Biogen worth $192 million as of the end of the fourth quarter. Shares of Boigen gained 1.5% in after-hours trading on Friday. Four times a year, investors file their long positions with the SEC, and the information is released to the public 45 days after each quarter ends. These positions reflect either Buffett's buys or those of the two fund managers Ted Weschler and Todd Combs that work for him at Berkshire. Here are Bershire's top holdings as of the end of the fourth quarter: The filing also showed Berkshire decreased its stake in Goldman Sachs by 34% to about 12 million shares. Berkshire also trimmed its Wells Fargo stake by 14% to 323 million shares worth around $19 billion, according to the filing. Berkshire maintained its positions in Amazon , American Express , Coca-Cola , JPMorgan and Kraft Heinz . Buffett earned his legendary status by consistently outperforming the broader market, using his long-standing value investing principles. Though the Oracle of Omaha has been on a bit of a cold streak recently, his picks can speak volumes in a market where little is cheap.
Warren Buffett, chairman and CEO of Berkshire Hathaway Inc
Warren Buffett's Berkshire Hathaway revealed it owned 18.9 million shares of Kroger at the end of the fourth quarter, sending shares of the grocery story surging in after-hours trading. Here's what else the Oracle of Omaha is betting on: