Zuckerberg's apology was not enough for Wall Street

Mark Zuckerberg's words did little to soothe anxious shareholders. The Facebook chief executive last Wednesday finally addressed the social network's Cambridge Analytica scandal -- but his "very sorry" mea culpa couldn't stop another sell-off in the company's shares. Facebook shares fell 2.7 percent on Thursday, to $164.89 -- leaving them down nearly 15 percent from...