Moody’s Rating Symbols
The following describe characteristics of the global long-term (original maturity of 1 year or more) bond ratings provided by Moody’s Investors Service, Inc. (Moody’s):
Aaa—Judged to be obligations of the highest quality, they are subject to the lowest level of credit risk.
Aa—Judged to be obligations of high quality, they are subject to very low credit risk. Together with the Aaa group, they make up what are generally known as high-grade bonds.
A—Judged to be upper-medium-grade obligations, they are subject to low credit risk.
Baa—Judged to be medium-grade obligations, subject to moderate credit risk, they may possess certain speculative characteristics.
Ba—Judged to be speculative obligations, they are subject to substantial credit risk.
B—Considered to be speculative obligations, they are subject to high credit risk.
Caa—Judged to be speculative obligations of poor standing, they are subject to very high credit risk.
Ca—Viewed as highly speculative obligations, they are likely in, or very near, default, with some prospect of recovery of principal and interest.
C—Viewed as the lowest rated obligations, they are typically in default, with little prospect for recovery of principal and interest.
Moody’s also supplies numerical indicators (1, 2, and 3) to rating categories. The modifier 1 indicates that the security is in the higher end of its rating category, the modifier 2 indicates a mid-range ranking, and the modifier 3 indicates a ranking toward the lower end of the category.
The following describe characteristics of the global short-term (original maturity of 13 months or less) bond ratings provided by Moody’s. This ratings scale also applies to U.S. municipal tax-exempt commercial paper.
Prime-1 (P-1)—Judged to have a superior ability to repay short-term debt obligations.
Prime-2 (P-2)—Judged to have a strong ability to repay short-term debt obligations.
Prime-3 (P-3)—Judged to have an acceptable ability to repay short-term debt obligations.
The following describe characteristics of the U.S. municipal short-term bond ratings provided by Moody’s: Moody’s ratings for state and municipal notes and other short-term (up to 3 years) obligations are designated Municipal Investment Grade (MIG).
MIG 1—Indicates superior quality, enjoying the excellent protection of established cash flows, liquidity support, and
broad-based access to the market for refinancing.
MIG 2—Indicates strong credit quality with ample margins of protection, although not as large as in the preceding group.
MIG 3—Indicates acceptable credit quality, with narrow liquidity and cash-flow protection and less well-established
market access for refinancing.
SG—Indicates speculative credit quality with questionable margins of protection.
Standard and Poor’s Rating Symbols
The following describe characteristics of the long-term (original maturity of 1 year or more) bond ratings provided by Standard and Poor’s:
AAA—These are the highest rated obligations. The capacity to pay interest and repay principal is extremely strong. AA—These also qualify as high-grade obligations. They have a very strong capacity to pay interest and repay principal, and they differ from AAA issues only in small degree.
A—These are regarded as upper-medium-grade obligations. They have a strong capacity to pay interest and repay principal although they are somewhat more susceptible to the adverse effects of changes in circumstances and economic conditions than debt in higher rated categories.
BBB—These are regarded as having an adequate capacity to pay interest and repay principal. However, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity in this regard. This group is the lowest that qualifies for commercial bank investment.
BB, B, CCC, CC, and C—These obligations range from speculative to significantly speculative with respect to the
capacity to pay interest and repay principal. BB indicates the lowest degree of speculation and C the highest. D—These obligations are in default, and payment of principal and/or interest is likely in arrears.
The ratings from AA to CCC may be modified by the addition of a plus (+) or minus (–) sign to show relative standing within the major rating categories.
The following describe characteristics of short-term (original maturity of 365 days or less) bond and commercial paper ratings designations provided by Standard and Poor’s:
A-1—These are the highest rated obligations. The capacity of the obligor to pay interest and repay principal is strong. The addition of a plus sign (+) would indicate a very strong capacity.
A-2—These obligations are somewhat susceptible to changing economic conditions. The obligor has a satisfactory capacity to pay interest and repay principal.
A-3—These obligations are more susceptible to the adverse effects of changing economic conditions, which could lead to a weakened capacity to pay interest and repay principal.
B—These obligations are vulnerable to nonpayment and are significantly speculative, but the obligor currently has the capacity to meet its financial commitments.
C—These obligations are vulnerable to nonpayment, but the obligor must rely on favorable economic conditions to meet its financial commitment.
D—These obligations are in default, and payment of principal and/or interest is likely in arrears.
The following describe characteristics of U.S. municipal short-term (original maturity of 3 years or less) note ratings provided by Standard and Poor’s:
SP-1—This designation indicates a strong capacity to pay principal and interest. SP-2—This designation indicates a satisfactory capacity to pay principal and interest. SP-3—This designation indicates a speculative capacity to pay principal and interest.