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. Pharmacies are acquiring insurers. Hospitals are getting into the drug business. And insurers are starting to own doctors offices. And a pharmacy giant — Walgreens — is reportedly looking into acquiring a $20 billion drug distributor. The boundaries of the healthcare business are changing. Instead of growing...