VGSH vs. ISTB: Which Short-Term Bond ETF Delivers More Value?

Key Points

• iShares Core 1-5 Year USD Bond ETF offers a higher dividend yield but has a higher expense ratio than Vanguard Short-Term Treasury ETF.

• Vanguard Short-Term Treasury ETF focuses exclusively on U.S. Treasuries, whereas iShares Core 1-5 Year USD Bond ETF includes corporate and emerging market debt.

• Vanguard Short-Term Treasury ETF has experienced lower historical volatility and a shallower maximum drawdown over the last five years.

Vanguard Short-Term Treasury ETF (NASDAQ:VGSH) and iShares Core 1-5 Year USD Bond ETF (NASDAQ:ISTB) differ primarily in their credit exposure and yield potential, as one adheres strictly to government debt while the other branches into corporate bonds.

Both funds serve as conservative anchors within a portfolio, yet they diverge in credit risk and duration. The Vanguard fund tracks the Bloomberg US Treasury 1-3 Year Index, providing pure government exposure, while the iShares fund follows the Bloomberg U.S. Universal 1-5 Year Index, capturing a broader cross-section of the bond market.

Snapshot (cost & size)

MetricVGSHISTBIssuerVanguardiSharesShare price (as of 9/10/26)$57.73$47.55Expense ratio0.03%0.06%1-yr return (as of 9/10/26)1.9%1.5%Dividend yield3.8%4.3%Beta0.220.39AUM$39.3 billion$5.1 billion

Beta measures price volatility relative to the S&P 500; beta is calculated from monthly returns over the available fund history (up to five years). The 1-yr return represents total return over the trailing 12 months. Dividend yield is the trailing-12-month distribution yield.

The Vanguard fund is the more affordable option with its 0.03% expense ratio, half that of its iShares counterpart. However, the iShares fund may appeal to income-focused investors due to its higher 4.3% dividend yield, which represents a 0.5 percentage point advantage over the Vanguard fund.

Performance & risk comparison

MetricVGSHISTBMax drawdown (5 yr)(5.7%)(9.3%)Growth of $1,000 over 5 years (total return)$1,097$1,093

What's inside

iShares Core 1-5 Year USD Bond ETF holds 7,451 positions, offering a diversified mix of U.S. Treasury, government-related, corporate, and mortgage-backed securities with maturities between one and five years. The broader scope of the iShares fund introduces more sensitivity to corporate credit cycles than a pure Treasury fund. The fund was launched in 2012. iShares Core 1-5 Year USD Bond ETF has paid $2.06 per share over the trailing 12 months, which on its recent ~$47.55 share price works out to a 4.3% yield.

Vanguard Short-Term Treasury ETF holds 92 issues, strictly limiting its portfolio to U.S. Treasury securities with maturities between one and three years. The Vanguard fund limits itself to the highest-quality government paper, which typically results in lower volatility during periods of credit stress. The fund was launched in 2009. Vanguard Short-Term Treasury ETF has paid $2.19 per share over the trailing 12 months, which on its recent ~$57.73 share price works out to a 3.8% yield.

Which looks like the better buy

Investors looking to add diversity and stability to their equity portfolios may be turning to the bond market. Allocating to bonds can reduce overall portfolio volatility while providing consistent cash flow. However, there are different approaches to this strategy. Treasury bonds are debt securities issued on behalf of the U.S. government and are widely regarded among the lowest-risk investments available—meaning low volatility but also a lower yield. With Treasury yields rising and market expectations pointing toward a potential rate hike, these funds may represent a compelling source of consistent income and portfolio stability.

The iShares Bond ETF takes a broader approach, holding a mix of U.S. Treasury notes, mortgage-backed securities, and corporate bonds. This diversified composition introduces additional risk but also supports a higher dividend payout compared to the Treasury-only alternative.

ISTB is an intriguing option in this comparison. It still holds approximately 50% of its portfolio in short-term U.S. Treasuries, providing stability while generating greater income. However, investors should keep in mind that these funds are unlikely to deliver significant growth. Even their relatively modest one-year returns are reported on a total return basis, meaning interest was reinvested. Without reinvestment, both funds are actually down over the past year.

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