US stocks opened higher on Monday after Warren Buffett's Berkshire Hathaway's $37.2 billion deal to buy Precision Castparts showed the M&A boom was alive and well.
The Dow Jones industrial average rose 92.93 points, or 0.53 percent, to 17,466.31, the S&P 500 gained 11.82 points, or 0.57 percent, to 2,089.39 and the Nasdaq composite added 38.80 points, or 0.77 percent, to 5,082.34.