Q. How do I find a ranking of equity research analysts and firms?

Use Institutional Investor
Find the Research & Rankings section in the table of contents.
Go to Business Source Complete
Type research team in the TI Title field
AND
institutional investor in the SO Publication Name field

Use Bloomberg, available on the 3rd floor (Room M3-53B) of the McLennan Library for finding out which analyst has been best at predicting stock prices and EPS for a selected company.
Type the ticker symbol e.g., IBM, then hit the yellow Equity key and type ANRand hit the green GO key.
To sort the list click on BARR and select Actual Ascending
You also can get consensus estimates and analyst recommendations.