CEO Greg Abel made a major housecleaning of Berkshire Hathaway's (BRK.B) stock portfolio in the first quarter. The holding company, of which Warren Buffett remains chairman, initiated stakes in Delta Air Lines (DAL) and Macy's (M), and added to some other key positions. The big news, however, was a mass exodus from more than a dozen holdings.
Abel now oversees Berkshire's equity portfolio, although Buffett keeps his hand in and plays a key advisory role. Investment manager Ted Weschler also continues to manage perhaps 5% of Berkshire's stock investments.
