美股微幅高开，道指涨0.08%，标普500指数涨0.12%，纳指涨0.05%。美股区块链概念股涨多跌少，柯达下跌0.33%，埃森哲上涨0.03%，overstock.com上涨1.23%；RiotBlockchain上涨3.90%，MarathonPatent上涨1.48%，Square上涨4.05%。