After the market closed on May 15, 2015, Berkshire Hathaway Inc. (NYSE:BRK-A) (NYSE:BRK-B) reported its equity holdings of U.S. based companies in its SEC 13F filing for the quarter ending March 31, 2015.  This report revealed numerous changes to Berkshire’s portfolio.  The three largest were:

(1) Warren Buffett added about $400 million (3%) to his holding in International Business Machines (NYSE:IBM) ($13.8 billion)

(2) Todd Combs and/or Ted Weschler added about $300 million (50%) to their position in Precision Castparts (NYSE: PCP) ($900 million)

(3) Todd Combs and/or Ted Weschler sold about $200 million (60%) of their holding in National Oilwell Varco (NYSE: NOV) ($100 million).

Berkshire also had minor additions to stakes in Deere (NYSE: DE), Phillips 66 (NYSE: PSX), Twenty First Century Fox (NASDAQ: FOXA), U.S. Bancorp (NYSE:FOXA), and Wells Fargo & Co (NYSE: WFC).

 
There were also minor reductions in Bank of New York Mellon (NYSE: BK), Charter Communications, Inc. (NASDAQ:CHTR), Liberty Global plc (NASDAQ:LBTYA) (NASDAQ:LBTYB), Mastercard Inc (NYSE:MA), Viacom (NASDAQ: VIAB), Visa (NYSE: V), and Wabco (NYSE: WBC)

There were no positions that were either initiated or eliminated.

Berkshire Hathaway’s 13F filing for the first quarter of 2015 is available at: Berkshire Hathaway 13F