The CRSP/Compustat Merged database (CCM) provides CRSP and Compustat subscribers with a convenient way to link CRSP market and corporate action data with Compustat fundamental data by allowing CRSP users to search by Permno, Permco, and or GVKEY identifiers.
Special Note: WRDS accounts will only be generated for current faculty, currently enrolled students (Ph.D., masters, and undergraduate), and selected current staff of UNC-Chapel Hill.
To fill out an on-line account request form go to https://wrds-www.wharton.upenn.edu/ and click on the “Register” tab in the upper right portion of the screen.
UNC-CH users with additional password
https://wrds-www.wharton.upenn.edu/