U.S. stocks opened, the Dow rose 0.61%, the S & P 500 rose 0.58%, the Nasdaq rose 0.75%. MicroStrategy (MSTR. O) rose 2.9% after news that it bought more than 50,000 bitcoins for $5.40 billion last week; other cryptocurrency concept stocks generally rose, Coinbase (COIN. O) rose 1.5%.