Rating Agencies and Coverage

Rating agencies and coverage determine who issued a credit opinion, what entity or obligation it addresses, which methodology and scale apply, and whether a regulatory registration is relevant. A rating symbol without this context can be materially misleading.

Start With the Right Question

Guides in This Branch

• Credit Rating Agency explains agency functions, business models, rating processes, conflicts, and analytical limits.
• Nationally Recognized Statistical Rating Organization (NRSRO) explains SEC registration, the five rating classes, Form NRSRO, and how to verify scope.
• Japan Credit Rating Agency (JCR) shows how to review an agency-specific scale, methodology, regulatory status, and class limitation.

Historical commercial-credit reporting is covered separately by Mercantile Agency Services. A business credit report is not the same product as a capital-markets credit rating.

Worked Example: Avoiding a Scope Error

Assume a bond policy permits a security only if it has a current rating from an NRSRO registered for the relevant class. An analyst finds a rating from a familiar agency and records the symbol.

That is incomplete. The analyst should also verify:

1. the exact legal entity that issued the rating;
2. whether the opinion applies to the bond rather than only the issuer;
3. the agency’s current NRSRO status and registered class;
4. the rating date, outlook, watch, and withdrawal status; and
5. the policy’s treatment of multiple ratings, split ratings, and subsequent downgrades.

The symbol supports credit analysis only after the identity, scope, and timing checks are satisfied.

Agency Opinion vs. Independent Analysis

A rating can help organize default-risk evidence, but it does not directly answer:

• whether the security is fairly priced
• how liquid it will be in stressed markets
• how much an investor will recover after default
• whether a covenant or guarantee is enforceable
• whether currency or interest-rate risk is acceptable
• whether the security fits a particular portfolio

Review the rating rationale alongside financial statements, debt documents, liquidity, market spreads, structural priority, and scenario analysis.

Common Mistakes

• Treating a rating as a guarantee or investment recommendation.
• Assuming issuer and issue ratings are interchangeable.
• Mapping one agency’s symbols mechanically to another’s.
• Treating NRSRO status as SEC approval of rating quality.
• Assuming registration covers every rating class.
• Confusing business credit reports with securities credit ratings.
• Using an undated symbol without the latest action or rationale.

This section provides general financial and regulatory education. It does not provide a credit rating, legal opinion, compliance conclusion, lending decision, or investment recommendation.

Authoritative Starting Points

• SEC Office of Credit Ratings
• SEC current NRSROs
• Investor.gov: The ABCs of Credit Ratings

In this section

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