Buffett's remarks were reported by CNBC anchor Rebecca Quick, who spoke with him after Buffett's Berkshire Hathaway posted its quarterly filing of securities ownership with the U.S. Securities and Exchange Commission earlier on Monday.

Among other moves in its portfolio, Berkshire had cut stakes in Wal-Mart Stores Inc and Goldman Sachs Group Inc to raise cash for its pending purchase of Precision Castparts Corp., Buffett told CNBC.

(Reporting By Dan Burns; Editing by Chizu Nomiyama)