美股三大股指小幅高开，道指涨0.11%，纳指涨0.35%，标普500指数涨0.03%。美股区块链概念股跌多涨少，柯达上涨2.33%，埃森哲下跌0.55%，overstock.com上涨0.21%；RiotBlockchain下跌15.71%，MarathonPatent下跌15.36%，Square下跌0.53%。