** Shares of Corona beer maker Constellation Brands STZ.N up 3.8% at $197.90 premarket
** Warren Buffett's Berkshire Hathaway BRKa.N said on Thursday it more than doubled its stake in the company
** Said stake grew to ~12 million shares worth $2.2 billion from 5.6 million shares at year end, giving Berkshire a 6.6% stake in Constellation
** Up to Thursday's close, stock has fallen ~14% YTD
(Reporting by Neil J Kanatt in Bengaluru)
((Neil.JKanatt@thomsonreuters.com;))