Key Points
Vanguard Short-Term Bond ETF offers a lower expense ratio and slightly lower dividend yield than iShares Core 1-5 Year USD Bond ETF.
iShares Core 1-5 Year USD Bond ETF maintains a significantly larger number of holdings, including high-yield bonds, while Vanguard Short-Term Bond ETF focuses exclusively on investment-grade debt.
Vanguard Short-Term Bond ETF has managed a smaller maximum drawdown over the last five years.
While Vanguard Short-Term Bond ETF(NYSEMKT:BSV) offers a lower expense ratio and higher credit quality, iShares Core 1-5 Year USD Bond ETF(NASDAQ:ISTB) provides broader diversification and a slightly higher trailing yield.
Investors seeking to dampen portfolio volatility often look toward short-duration bonds, which are less sensitive to interest rate fluctuations than longer-term debt. The choice between them often hinges on whether an investor prefers the strict safety of government-backed debt or the extra income potential found in the broader corporate bond market.
Snapshot (cost & size)
| Metric | ISTB | BSV |
|---|---|---|
| Issuer | iShares | Vanguard |
| Expense ratio | 0.06% | 0.03% |
| 1-yr return (as of June 23, 2026) | 3.70% | 3.20% |
| Dividend yield | 4.20% | 4.00% |
| Beta | 0.11 | 0.09 |
| AUM | ~$5.0 billion | ~$45.1 billion |
Beta measures price volatility relative to the S&P 500; beta is calculated from five-year monthly returns. The 1-yr return represents total return over the trailing 12 months. Dividend yield is the trailing-12-month distribution yield.
Cost-conscious investors might favor the Vanguard fund for its lower 0.03% expense ratio, which is half the cost of its iShares counterpart. However, the iShares fund provided a higher yield over the last 12 months, likely due to its inclusion of higher-risk corporate bonds.
Performance & risk comparison
| Metric | ISTB | BSV |
|---|---|---|
| Max drawdown (5 yr) | (9.30%) | (8.50%) |
| Growth of $1,000 over 5 years (total return) | $1,099 | $1,087 |
What's inside
Vanguard Short-Term Bond ETF(NYSEMKT:BSV) focuses on high-quality (investment-grade) debt securities with maturities between one and five years. It primarily allocates capital to U.S. government bonds and top-tier corporate debt. The fund was launched in 2007 and paid $3.11 per share over the trailing 12 months.
The iShares Core 1-5 Year USD Bond ETF(NASDAQ:ISTB) follows a broader mandate by including high-yield U.S. corporate bonds and emerging market debt alongside Treasuries. The fund is managed by BlackRock(NYSE:BLK) and acts as a proxy for the broader one-to-five-year bond segment, pulling in niches like asset-backed securities and Eurodollar bonds. The fund was launched in 2012 and has a trailing-12-month dividend of $2.05 per share.
For more guidance on ETF investing, check out the full guide at this link.
What this means for investors
Short-term bond funds are the workhorses of a conservative portfolio. They’re dependable, undramatic, and designed to hold their value when everything else gets volatile. BSV and ISTB make different trade-offs between safety and income that are worth understanding before choosing between them.
Because BSV leans heavily on government-backed bonds, it is one of the most dependable short-term bond funds available. ISTB carries a bit more risk. It spans nearly 7,000 bonds and dips slightly lower in credit quality, including some below-investment-grade debt that BSV avoids entirely.
BSV charges half of what ISTB does and manages about $40 billion more in assets, giving it better liquidity and a longer track record. For most long-term investors who want short-term bond exposure as a stabilizer, BSV's higher credit quality, lower cost, and institutional scale make it the stronger default choice. If you want the broadest possible short-term bond diversification and are comfortable accepting a small amount of below-investment-grade credit exposure for a slightly higher yield, take a closer look at ISTB.
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