Credit Rating Characteristics
| Data Source | Description | Link |
| Moody's | 2012 Credit Rating Ratios report | Link |
Debt Margin
| Data Source | Description | Link |
| Damodaran | Default spreads for various credit ratings | Link |
| FRED | Corporate spreads for various credit ratings | Link |
Following are updated corporate debt margins for various maturities (July 14, 2017), updated weekly:
| Maturity | 2 | 5 | 10 | 20 |
| Corporate Spread | 0.583 | 0.888 | 1.560 | 1.690 |
