The best database to find analyst reports (investment reports) on public companies is Thomson ONE. 

Note:  THOMSON ONE IS ONLY AVAILABLE THROUGH INTERNET EXPLORER

• Go to USC Libraries' homepage
• Select Databases box below search box.
• Enter Thomson ONE in the search box and click Go. When you click on the database title you will be prompted to log in with your USC  NetID  & Password if you're off-campus or on the wireless network.
• When the page loads, select Screening & Analysis at the bottom left side of the page.
• Enter the name of a designated company and any other information (e.g. date range), and a list of reports (if available) will appear. See the steps in the image below: