# Investment Grade vs High-Yield Bonds

> High yield bonds are rated below investment grade and pay higher interest for higher default risk. Learn how they behave, default cycles, spreads and how to invest.

Source: https://learn.tradelabsai.com/bonds-credit/high-yield-bonds/  
Track: Bonds, Rates and Credit · Level: Intermediate · Updated: 2026-10-03  
Publisher: TradeLabs AI (https://tradelabsai.com). Education, not financial advice.  
Cite as: TradeLabs Learn, "Investment Grade vs High-Yield Bonds", https://learn.tradelabsai.com/bonds-credit/high-yield-bonds/

High yield bonds, often called junk bonds, are corporate bonds rated below investment grade: BB plus or lower by S&P and Fitch, Ba1 or lower by Moody's. Issuers include smaller companies, highly leveraged firms, companies owned by private equity and former blue chips that have been downgraded. In exchange for higher default risk, these bonds pay higher yields. High yield bonds behave partly like bonds and partly like stocks, and their performance is closely tied to the economic cycle.

## Who issues high yield bonds

| Issuer type | Example situation |
|---|---|
| Leveraged buyout companies | Private equity uses debt to buy a company |
| Growth companies | Not yet large or profitable enough for investment grade |
| Fallen angels | Formerly investment grade, downgraded after setbacks |
| Cyclical industries | Energy, airlines, retail with volatile earnings |

The market grew in the 1980s, led by Michael Milken at Drexel Burnham Lambert, who popularised high yield bonds for financing growth companies and takeovers.

## Yield and spread

High yield bonds typically trade at spreads of roughly 3 to 6 percentage points over Treasuries in normal markets, widening to 10 points or more in recessions. In late 2008, the average US high yield spread exceeded 19 percentage points; in March 2020 it briefly topped 10. See [Credit Spreads](https://learn.tradelabsai.com/bonds-credit/credit-spreads/).

## Defaults and recoveries

```
expected loss ≈ default probability × (1 - recovery rate)
```

**Example: Is the spread enough?**
A portfolio of high yield bonds yields 8.0% when Treasuries yield 4.0%, a spread of 4.0 points. Suppose the expected annual default rate is 3.5% and the average recovery rate is 40%. Expected loss ≈ 3.5% × 0.60 = 2.1% a year. The spread after expected losses is about 1.9 points, the compensation for bearing risk and illiquidity. In a recession, if defaults rise to 10% with 30% recovery, losses would be about 7% that year, far above the spread. See [Default Probability and Recovery Rate](https://learn.tradelabsai.com/bonds-credit/default-probability/).

Long term data from Moody's shows average annual default rates for speculative grade issuers of roughly 4%, with peaks above 10% in recessions such as 1991, 2001 to 2002 and 2009.

## How high yield bonds behave

| Factor | Effect |
|---|---|
| Economic growth | Strong growth narrows spreads and lowers defaults |
| Recessions | Spreads widen sharply; defaults rise |
| Interest rates | Less sensitive than Treasuries because coupons are high and maturities shorter |
| Stock market | Often moves with stocks, especially in selloffs |

High yield bonds have historically shown meaningful correlation with equities, so they provide less diversification than government bonds during market stress. See [Diversification](https://learn.tradelabsai.com/portfolio/diversification/).

## Features of high yield bonds

- **Shorter maturities:** often 5 to 10 years.
- **Call provisions:** commonly callable after a few years at a premium.
- **Covenants:** more restrictive than investment grade, though "covenant lite" structures have grown.
- **Lower liquidity,** especially for smaller issues.

## Investing in high yield

- **Funds and ETFs** provide diversification across hundreds of issuers, which matters because individual defaults can cause large losses.
- **Active managers** focus on credit analysis to avoid defaults.
- **Distressed investors** buy bonds trading far below par, betting on recovery. See [Distressed Debt and Bankruptcy Trading](https://learn.tradelabsai.com/bonds-credit/distressed-debt/).

## Risks

- **Default risk** and loss of principal.
- **Spread widening** in downturns, causing price falls even without defaults.
- **Liquidity risk:** prices can gap in stress, and ETFs can trade below the value of their holdings.
- **Call risk:** good performers get called away.
- **Concentration** in sectors such as energy, where commodity crashes have caused waves of defaults (2015 to 2016, 2020).

## Frequently asked questions

### What are high yield bonds?

Corporate bonds rated below investment grade, which pay higher yields to compensate for higher default risk.

### Why are they called junk bonds?

Because of their lower credit ratings. The term reflects higher risk, not necessarily poor quality businesses.

### How do high yield bonds perform in recessions?

Spreads usually widen and default rates rise, causing price declines that can be similar to stocks.

Next, learn how bond credit quality is graded in [Credit Ratings](https://learn.tradelabsai.com/bonds-credit/credit-ratings/).

## Continue learning

- Next lesson: [Credit Ratings](https://learn.tradelabsai.com/bonds-credit/credit-ratings/)
- Previous lesson: [Municipal Bonds](https://learn.tradelabsai.com/bonds-credit/municipal-bonds/)
- Related: [Municipal Bonds](https://learn.tradelabsai.com/bonds-credit/municipal-bonds/): Municipal bonds are issued by US states, cities and agencies, often with tax free interest. Learn GO vs revenue bonds, tax equivalent yield and the risks.
- Related: [Corporate Bonds](https://learn.tradelabsai.com/bonds-credit/corporate-bonds/): Corporate bonds are loans to companies that pay interest above government bonds. Learn investment grade vs high yield, spreads, covenants, callable bonds and risks.
- Related: [Credit Ratings](https://learn.tradelabsai.com/bonds-credit/credit-ratings/): Credit ratings from S&P, Moody's and Fitch grade the risk of default on bonds. Learn the scales, investment grade vs high yield, default rates by rating and limits.
- Related: [Credit Spreads](https://learn.tradelabsai.com/bonds-credit/credit-spreads/): A credit spread is the extra yield a risky bond pays over a safe benchmark. Learn how spreads are measured, what drives them and what they signal about risk.
- Related: [Default Probability and Recovery Rate](https://learn.tradelabsai.com/bonds-credit/default-probability/): Default probability is the chance a borrower fails to pay. Learn historical default rates, probabilities implied by spreads, the Merton model and recovery rates.
- Related: [Distressed Debt and Bankruptcy Trading](https://learn.tradelabsai.com/bonds-credit/distressed-debt/): Distressed debt is the bonds and loans of companies near default, bought at deep discounts. Learn how investors value it, the bankruptcy process and strategies.