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. Over the past few decades, the US economy has helped rich Americans get richer as the middle class shrinks. What changed? Americans embraced the idea that the only mission of companies is to maximize short-term profit for shareholders. It's time for a more balanced approach. It's time for better...