Berkshire Hathaway's latest 13-F filing reveals it doubled the size of its stake in the owner of the Modelo and Corona beer brands in the United States, while dumping its $1 billion stake in Citibank overboard.

Citigroup (C) shares are inching down this morning following reports that legendary investor Warren Buffett no longer has a position in the financial services behemoth. According to a recent 13F filing with the Securities and Exchange Commission,

Warren Buffett’s Berkshire Hathaway Inc. slashed its exposure to big-bank shares in the first quarter, liquidating its position in Citigroup Inc. and trimming positions in Bank of America Corp. and Capital One Financial Corp., according to a regulatory filing on Thursday.