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			 The changes were among several that Berkshire made in its common 
			stock investments in the fourth quarter, according to a U.S. 
			Securities and Exchange Commission filing detailing the 
			conglomerate's domestic equity investments as of Dec. 31. 
			 
			Berkshire began accumulating the bulk of its 17.1 million-share 
			stake in Deere, worth $1.51 billion at year end, in the third 
			quarter of 2014, but had not previously disclosed it. The SEC often 
			lets Buffett quietly accumulate large stakes to deter copycats. 
			 
			Deere shares rose 1.2 percent in after-market trading. 
			 
			Shares of companies often rise after Berkshire reveals new 
			investments because some investors consider it a vote of confidence 
			by Buffett and try to copy him. 
			 
			Deere declined to comment. 
			 
			Berkshire's decision to dispose of its entire 41 million-share stake 
			in Exxon Mobil was unusual for Berkshire because the stake had been 
			recently acquired, dating only to 2013. 
			
			  
			Exxon shares have outperformed many peers in recent months, losing 
			only about 15 percent of their value from June through January as 
			oil prices slumped by more than half. 
			 
			It is unclear why Buffett appeared to have soured on Exxon, or 
			whether Berkshire made money on the investment. 
			 
			Buffett "is of course a value investor, and the fact of the matter 
			is that Exxon shares held up extremely well during the oil price 
			meltdown," said Raymond James energy analyst Pavel Molchanov in an 
			interview. 
			 
			Exxon Mobil declined to comment. 
			
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			Berkshire also reported a new stake of 4.7 million shares in Rupert 
			Murdoch's media company Twenty-First Century Fox Inc. 
			It further reported a new 8.4 million-share stake in Restaurant 
			Brands International Inc, the parent of the Burger King and Tim 
			Hortons restaurant chains. Berkshire helped finance Burger King's 
			purchase of Tim Hortons last year and got Restaurant Brands shares 
			through the merger. 
			 
			Berkshire also added to holdings in IBM Corp, General Motors Co, 
			Phillips 66, Suncor Energy Inc and DirecTV, among others, and shed 
			stakes in oil company ConocoPhillips and pharmacy benefits 
			management company Express Scripts Holding Co. 
			 
			U.S. regulators require large investors to disclose their stock 
			holdings every quarter. 
			 
			Berkshire, based in Omaha, Nebraska, owns more than 80 businesses 
			ranging from Dairy Queen ice cream to Geico insurance to the BNSF 
			railroad. 
			 
			(Reporting by Luciana Lopez and Jonathan Stempel; Editing by Steve 
			Orlofsky) 
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