WEEK vs SGOV: Same T-Bills, Different Payout Cadence

Overview

Both SGOV and WEEK hold short-term U.S. Treasury bills maturing in three months or less, offering cash-like returns with minimal credit risk. The key difference is distribution frequency: SGOV pays monthly and tracks a formal index with $99.9B in assets, while WEEK distributes weekly and launched in March 2025 with $184M in AUM, targeting investors who want more frequent income recognition.

How they differ

SGOV tracks the ICE 0-3 Month US Treasury Securities Index with a monthly payout, while WEEK's weekly distribution schedule is its defining structural feature—designed to convert the same underlying government bill holdings into a stream of income paid 52 times annually instead of 12. SGOV's expense ratio is 0.07%, nearly a third of WEEK's 0.19%, a meaningful gap for a Treasury fund where yields are modest. SGOV's $99.9B in assets dwarfs WEEK's $184M, offering substantially tighter liquidity and lower bid-ask spreads. Both carry distribution rates in the 3.4–3.7% range, reflecting similar underlying bill yields, but WEEK's higher fee erodes net return slightly.

Who each is best for

SGOV: Fits investors who want a large, cost-efficient Treasury bill fund with a predictable monthly income cadence, suitable for core cash management or as a stable income baseline in a diversified portfolio.

WEEK: Designed for investors who value frequent income reporting and reinvestment opportunities, or who prefer the behavioral discipline of weekly distributions to visualize accumulating Treasury returns.

Key risks to know

• Reinvestment timing. Weekly distributions create more frequent reinvestment decisions than monthly ones; investors receiving 52 payouts annually will face greater timing risk if they wish to redeploy capital, though the economic cost is typically small for Treasury-bill rates.

• Fund size and trading liquidity. WEEK's $184M AUM is materially smaller than SGOV's $99.9B, which may result in wider bid-ask spreads and less predictable trading ease during market stress or large redemptions.

• Fee drag on low-yield securities. WEEK's 0.19% expense ratio is nearly three times SGOV's 0.07%. On a 3.5% gross yield, that fee difference reduces net returns by roughly 20–25 basis points annually—meaningful over time for a Treasury instrument.

• Fund maturity and track record. WEEK launched in March 2025, offering no long-term performance history; SGOV has operated since May 2020 through multiple rate cycles, allowing investors to observe how it has managed through market episodes.

Bottom line

If cost efficiency and established scale matter most, SGOV's lower fee and substantially larger asset base deliver better economics. If weekly income reporting and frequent distribution mechanics appeal to your workflow, WEEK provides that feature—but at a higher ongoing cost and with less historical data to evaluate. Past performance does not predict future results.