What is Credit Rating? (Plain English Definition)
Definition: A credit rating is an assessment of a bond issuer's ability to repay its debt, assigned by rating agencies like Moody's, S&P, and Fitch.
Credit Rating Explained Simply
A credit rating is a grade assigned to a bond issuer by independent rating agencies -- the three major ones being Moody's, Standard & Poor's (S&P), and Fitch. These ratings assess the likelihood that the issuer will make all interest and principal payments on time. Ratings range from AAA (highest quality, lowest risk) down to D (in default).
Bonds rated BBB- or higher by S&P (or Baa3 by Moody's) are considered investment grade, meaning they have a relatively low risk of default. Bonds rated below this threshold are called high-yield or junk bonds -- they offer higher interest payments to compensate investors for the increased risk of default.
Bond ETFs typically disclose the credit quality breakdown of their holdings. An investment-grade bond ETF might hold 70% AAA-AA bonds and 30% A-BBB bonds. A high-yield bond ETF would hold primarily BB and B-rated bonds. The average credit quality of a bond ETF's holdings is a key indicator of the fund's risk level and expected yield -- lower credit quality means higher yields but greater risk of losses from defaults.
Credit Rating Example
The iShares iBoxx Investment Grade Corporate Bond ETF (LQD) holds corporate bonds primarily rated A and BBB. It might yield 5.0% with very low default risk. Compare this to the iShares iBoxx High Yield Corporate Bond ETF (HYG), which holds BB and B-rated bonds yielding 7.5%. The extra 2.5% yield compensates for the higher risk -- historically, about 3-4% of high-yield bonds default in a typical year, rising to 10% or more during recessions.
Why Credit Rating Matters for ETF Investors
Credit ratings help ETF investors understand the risk-return tradeoff in bond funds. A bond ETF with higher-rated holdings will be more stable but pay less income. One with lower-rated holdings will pay more but can suffer sharper declines during economic stress. For ETF investors, checking the credit quality breakdown of any bond ETF before investing is essential. Two bond ETFs with similar yields might have very different credit profiles, and the one holding lower-rated bonds could experience significantly larger losses during a recession or financial crisis. Always match the credit risk in your bond ETFs to your overall risk tolerance.
Credit Rating vs Bond
| Credit Rating | Bond |
|---|---|
| A credit rating is an assessment of a bond issuer's ability to repay its debt, assigned by rating agencies like Moody's, S&P, and Fitch. | See full definition of Bond |
While credit rating and bond are related concepts, they serve different purposes in the world of ETF investing. Understanding both terms helps you make more informed decisions about which funds to include in your portfolio and how to evaluate their performance.
Related Terms
Deepen your understanding of ETF investing by exploring these related concepts:
Bond
A bond is a fixed-income investment where you lend money to a government or corporation in exchange for regular interest payments and the return of principal at maturity.
High-Yield Bond (Junk Bond)
A high-yield bond is a bond rated below investment grade that pays higher interest to compensate for its greater risk of default.
Default Risk
Default risk is the probability that a bond issuer will fail to make required interest payments or return the principal amount at maturity.
Fixed Income
Fixed income refers to investments that provide regular, predictable interest payments, primarily bonds and bond-like securities.
Interest Rate
An interest rate is the cost of borrowing money or the return earned on lending money, expressed as a percentage of the principal amount.
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