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 longtime D.E. Shaw portfolio manager says he was unfairly terminated after an investigation into allegations of inappropriate behavior. Now he's fighting back. D.E. Shaw fired Daniel Michalow, a senior portfolio manager in the firm's discretionary macro group, after the $50 billion fund conducted an...