Bond ETFs: A Complete Introduction
Bond ETFs hold thousands of bonds in a single fund. Here is how they work, what they pay, and when you need them.
Don't have time? Here's what you need to know:
- 1BND is the default bond ETF: 10,000+ bonds, 0.03%, $100B+ in assets, monthly income
- 2Bond ETFs stabilize portfolios — gained 5% during the 2008 crash while stocks lost 37%
- 3Add bonds as you age or when stock volatility starts affecting your behavior
- 42022's bond losses were extreme and unusual — bonds have gained during most stock market downturns
What a Bond ETF Holds
A bond ETF holds a diversified portfolio of bonds — loans you make to governments, municipalities, or corporations. BND holds over 10,000 bonds including U.S. Treasuries, government agency bonds, and investment-grade corporate bonds. Each bond pays interest (called coupon payments), which flows through to you as the ETF's monthly distribution.
Unlike individual bonds that return your principal at maturity, bond ETFs never mature — they continuously buy and sell bonds to maintain their target duration and credit quality. This means bond ETF prices fluctuate with interest rates, unlike a single bond held to maturity. The trade-off for this perpetual rolling is instant diversification and daily liquidity.
Types of Bond ETFs
| Type | Example | Yield | Risk Level | Best For |
|---|---|---|---|---|
| Total U.S. Bond Market | BND (0.03%) | ~4.5% | Low-Moderate | Core bond holding |
| U.S. Treasury | GOVT (0.05%) | ~4.0% | Very Low | Maximum safety |
| Short-Term Bonds | BSV (0.04%) | ~4.8% | Very Low | Stability, less rate sensitivity |
| Corporate Investment-Grade | LQD (0.14%) | ~5.5% | Moderate | Higher yield, some credit risk |
| High-Yield (Junk) Bonds | HYG (0.49%) | ~6.0% | High | Income-seekers, recession risk |
| Municipal Bonds | MUB (0.07%) | ~3.0% | Low | Tax-free income for high earners |
| TIPS | SCHP (0.03%) | ~2% + CPI | Low | Inflation protection |
| International Bonds | BNDX (0.07%) | ~4.0% | Low-Moderate | Global bond diversification |
How Much in Bonds and When to Add Them
Common guideline: your bond allocation roughly equals your age minus 20. At 30, that is 10% bonds. At 50, 30% bonds. At 60, 40% bonds. This is a starting point — adjust based on risk tolerance. Someone at 30 who cannot handle a 30% stock portfolio drop might want 20% bonds. Someone at 60 with a pension and paid-off house might be comfortable with only 20% bonds.
For most investors under 30: bonds are optional. A 100% stock portfolio (VTI + VXUS) maximizes expected returns over 30+ years. Add BND when volatility starts affecting your behavior (you consider selling during drops) or when your time horizon shortens.
Tip: BND is the default bond ETF for most investors — total U.S. investment-grade bonds at 0.03%. If you want less interest rate sensitivity, use BSV (short-term bonds, 0.04%).
Ready to invest? Open an IBKR account in 10 minutes and get free stock. $0 commissions on US ETFs • Fractional shares from $1 • 150+ global markets.
Frequently Asked Questions
Why did bond ETFs lose money in 2022?
The Federal Reserve raised interest rates from 0% to 4.5% at the fastest pace in decades. When rates rise, existing bond prices fall (their fixed coupon payments become less attractive vs new higher-rate bonds). BND lost 13%. This was an extreme and unusual year — bond ETFs gained in 2008, 2020, and most other stock market downturns.
BND or AGG — which bond ETF is better?
Nearly identical. BND tracks Bloomberg Aggregate via Vanguard (0.03%). AGG tracks the same index via iShares (0.03%). Pick whichever your broker makes convenient. Performance is within 0.01% of each other.
Should I hold individual bonds instead of a bond ETF?
Individual bonds return your exact principal at maturity — no price risk if held to term. Bond ETFs never mature, so prices fluctuate. For investors who want guaranteed principal return at a specific date, individual bonds or bond ladder ETFs (iBonds from iShares) may be better.
Further Reading
Free Tools
Alex Harrington
CFA Level II Candidate, Finance & Economics
Alex Harrington is an independent ETF researcher and personal finance writer with over 8 years of experience analyzing exchange-traded funds. A CFA Level II candidate with a background in economics, Alex has reviewed 800+ ETFs and helped thousands of beginners build their first investment portfolios through clear, jargon-free education.
This content is for educational purposes only and does not constitute financial advice. Past performance does not guarantee future results. Consult a licensed financial advisor before making investment decisions.