What you need to know on Wall Street today

Welcome to Finance Insider, Business Insider's summary of the top stories of the past 24 hours. Sign up here to get the best of Business Insider delivered direct to your inbox. A senior trading exec at Goldman Sachs explains why he’s so worried about the coming turn in a $9 trillion market If you're one of the most senior trading executives on Wall Street, what keeps you up at night? For Justin Gmelich, the chief operating officer of Goldman Sachs's fixed-income trading unit,...