VCSH vs ISTB: Which Short-Term Bond ETF Wins?

The Vanguard Short-Term Corporate Bond ETF (NASDAQ:VCSH) provides concentrated, lower-cost exposure to short-dated corporate credit, while the iShares Core 1-5 Year USD Bond ETF (NASDAQ:ISTB) offers broader market coverage across the treasury and corporate debt markets.

Investors seeking to balance income with capital preservation often look to the short end of the bond market. Both VCSH and ISTB manage interest rate risk by holding debt with maturities under five years. The iShares fund tracks the Bloomberg U.S. Universal 1-5 Year Index, which includes a broader spectrum of credit than the corporate-only indexes often used by its peers.

Snapshot (cost & size)

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.

While both funds are exceptionally low-cost, the Vanguard fund remains the more affordable option with a 0.03% expense ratio compared to 0.06% for the iShares fund. Investors must weigh whether the extra expense is worth the broader diversification provided by the iShares fund.

Performance & risk comparison

What's inside

The Vanguard focuses specifically on credit markets with no equity sector breakdown. It maintains a highly diversified portfolio of 3,023 holdings, ensuring that no single position exceeds 0.94% of total assets under management (AUM). This focus on investment-grade corporate bonds generally results in higher income than government-heavy portfolios.

The fund was launched in 2009. VCSH has paid $3.51 per share over the trailing 12 months, which, at its recent $78.5 share price, works out to a 4.5% yield.

The iShares provides comprehensive exposure to the U.S. dollar-denominated bond market, with no sector breakdown. This broad-market fund holds 7,394 positions, prioritizing variety across government and corporate issues. Its largest positions include Treasury Note 3.88% 06/15/2028 at 1.09%, Blackrock Cash Cl Inst Sl Agency at 1.08%, and Treasury Note (old) 4.13% 06/30/2031 at 1.05%.

The fund was launched in 2012. ISTB has paid $2.05 per share over the trailing 12 months, which, at its recent $48 share price, works out to a 4.3% yield.

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Which ETF is the better buy?

Both funds have delivered similar returns, offer similar yields, and have low costs. But if I were selecting one today, I would buy the iShares (ISTB).

While the Vanguard (VCSH) has slightly outperformed over the past five years, its corporate credit focus means it will have a higher max drawdown potential when the economy is in a recession, and businesses are under pressure. I would rather buy a corporate bond fund like VCSH in a bear market or recession when that risk is priced in, and I can buy it at a discount.

ISTB can also see downside during a bear market, as it did in 2022, but it should be a shallower drawdown given that 52% of its current portfolio is comprised of U.S. Treasuries. This makes it a potentially safer bond fund to buy mid-cycle in a bull market.

John Ballard has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.