Using Bloomberg, available in the Margolis Market Information Lab;
- Type the ticker symbol for the company you want
- Hit the CORP key
- Then type CRPR and hit the GO key.
- You can find historical bond ratings for particular issues.
WRDS is available through Business Information Services.
- Choose Compustat
- Scroll to Ratings Xpress
- Choose your ratings category
To inquire further please contact: bis@library.illinois.edu