Generated April 2026 from current fund data.
Overview
BND and TLT are both bond ETFs tracking U.S. fixed-income indexes, but they cover vastly different parts of the market. BND holds the entire investment-grade bond universe—Treasuries, investment-grade corporates, mortgage-backed securities, and other sectors—while TLT focuses exclusively on long-dated Treasury bonds with 20+ year maturities. The key distinction: BND diversifies across credit quality and duration; TLT concentrates on duration and government credit only.
How they differ
The biggest difference is scope. BND tracks a broad aggregate index spanning multiple bond types and maturities, while TLT is a narrow play on the longest-maturity Treasuries. This drives their interest-rate sensitivity: TLT's beta of 2.37 means it swings roughly 2.4 times harder than the broader bond market (BND's 0.98 beta) when rates move. TLT yields more (4.66% vs. 4.00%), but that higher yield comes from duration risk, not credit risk—long bonds appreciate more when rates fall and lose more when rates rise.
Fee-wise, BND's 0.03% expense ratio is five times cheaper than TLT's 0.15%, and BND's asset base ($387 billion vs. $43 billion) reflects its broader appeal. The gap in 52-week trading ranges—BND moved 2.1% (high $75.23 to low $71.76) while TLT moved 10.7% (high $92.19 to low $83.30)—underscores TLT's volatility from interest-rate moves. Both distribute monthly.
Who each is best for
BND: Income-focused investors seeking stable, diversified bond exposure with minimal fees, suitable for core bond allocation in taxable or tax-advantaged accounts. Works well for those uncomfortable with the duration risk of long bonds.
TLT: Total-return investors with moderate-to-long time horizons who can tolerate significant price swings and want to bet on falling long-term rates. Better suited for tax-advantaged accounts given price volatility; useful as a hedge against equity downturns during risk-off periods.
Key risks to know
- Duration risk: TLT's 2.37 beta exposes you to outsized losses if the Fed holds rates higher for longer or if long yields rise. BND, with lower duration, is less sensitive.
- Yield sustainability: TLT's 4.66% yield is entirely dependent on the current level of long-dated Treasury yields; if yields rise, distributions may fall as prices decline.
- Interest-rate environment: Both funds lose principal value in rising-rate environments, but TLT amplifies this effect. The recent 52-week decline in TLT (down ~9.5% from high to low) illustrates this vulnerability.
- Credit diversification: BND's corporate and MBS holdings carry embedded credit and prepayment risks absent from TLT's pure-Treasury structure.
Bottom line
If you want ballast for a portfolio and low fees, BND offers broad diversification and minimal volatility. If you believe long-term rates will decline and can stomach significant price swings, TLT offers higher yield and duration leverage. Neither choice eliminates interest-rate risk—a reality facing all fixed-income investors. Past performance doesn't predict future results.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.