Capital is pouring into U.S. equities and Silicon Valley tech firms, with investor confidence running high. Just days ago, the White House unveiled its “AI Action Plan” in a bid to cement America’s ...

杰克·多尔西旗下的Block Inc.于周三纳入备受瞩目的标普500指数，这一极具象征意义的里程碑，让这家涉足移动银行、比特币挖矿等诸多领域的数字金融公司成为华尔街的焦点。