Generated August 15, 2026.
Overview
SGOV and VBIL are both ultra-short Treasury ETFs designed to track U.S. Treasury securities maturing in three months or less. The key difference is fund size and age: SGOV is the established choice with $99.9B in assets and five years of history, while VBIL is Vanguard's newer entrant launched in February 2025 with $10.4B in AUM. Both offer nearly identical monthly distributions tied to short-term Treasury yields, with expense ratios under 0.10%.
How they differ
Both funds target the same maturity bucket—zero to three months—but SGOV tracks the ICE 0-3 Month US Treasury Securities Index while VBIL's underlying index is not specified in the fund documentation. SGOV's $99.9B in assets dwarfs VBIL's $10.4B, which may translate to tighter spreads and more efficient trading for the larger fund. The expense ratio difference is minimal (SGOV 0.07% vs. VBIL 0.06%), and distribution rates are nearly identical (SGOV 3.66% vs. VBIL 3.59%), reflecting the tight yields available in the T-bill market. Both carry minimal negative beta, confirming their defensive character.
Who each is best for
SGOV: Fits investors prioritizing deep liquidity and a longer track record. The $99.9B asset base may appeal to those building core cash-equivalent positions in large accounts.
VBIL: Designed for cost-conscious investors who value the lowest-cost available exposure. Vanguard's recent launch suits those comfortable with newer funds that offer a 1-basis-point expense advantage.
Key risks to know
- Limited rate-decline potential. Both funds own securities maturing in 90 days or less, so falling rates offer little price appreciation. If Treasury yields drop sharply, NAV gains will be minimal.
- Rollover and reinvestment sensitivity. Ultra-short Treasury funds are extremely sensitive to where maturing positions are reinvested. A sudden drop in 3-month bill yields could lower monthly distributions quickly.
- VBIL's short operating history. The fund launched in February 2025, so there is no historical volatility or stress-test data yet. Investors familiar with multi-year fund performance data cannot apply that lens to VBIL.
- Credit risk is negligible. Both hold only U.S. Treasury obligations, eliminating default risk entirely.
Bottom line
If you want proven liquidity and an established fund with years of performance data, SGOV's $99.9B in assets and May 2020 inception date stand out. If you prioritize the lowest possible expense ratio and accept a newly launched fund, VBIL's 0.06% fee offers a modest cost edge. Both funds deliver nearly identical yields in a market where distribution income will move with Fed policy, not manager skill—past performance of either fund does not predict future distributions.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.