This guide compares all four side by side — what they hold, how often they pay you, what they cost, and which one tends to fit which kind of investor, especially someone trying to sit out market turbulence without losing purchasing power.
Note: this article is for general educational purposes only and is not financial advice. Yields, expense ratios, and fund details change frequently and were current as of August–September 2026 at the time of writing — always verify current figures directly with each fund provider before investing, and consider speaking with a licensed financial advisor.
🛡️ Why Cash ETFs Matter During a Market Crash
During a sharp stock market decline, investors often want somewhere to move money that isn't just sitting idle in a brokerage account earning nothing. Ultra-short Treasury ETFs solve that problem: they hold short-term U.S. Treasury bills, pay monthly or weekly distributions, and are exempt from state and local income tax in all 50 states, which makes them meaningfully more tax-efficient than money market funds or high-yield savings accounts in high-tax states like California or New York.
Because these funds hold debt maturing in a matter of weeks, their share prices barely move when interest rates change — unlike longer-duration bond funds, which can lose value even while paying a stated yield. That combination of stability and yield is exactly what makes them a popular place to sit during periods of stock market stress.
📊 The Four Funds at a Glance
| ETF | Issuer | What It Holds | Distribution Schedule |
|---|---|---|---|
| WEEK | Roundhill | U.S. Treasury bills, 0–3 month maturities, actively managed | Weekly |
| SGOV | iShares | ICE 0-3 Month US Treasury Securities Index (bills rolled continuously) | Monthly |
| BIL | State Street (SPDR) | Bloomberg 1-3 Month U.S. Treasury Bill Index | Monthly |
| USFR | WisdomTree | Bloomberg U.S. Treasury Floating Rate Bond Index — floating-rate notes that reset weekly against the 3-month bill auction | Monthly |
The most distinctive fund here is WEEK: it's the first ETF designed to target a stable net asset value week over week while paying distributions on a weekly schedule, essentially automating the classic "T-bill ladder" strategy that individual investors used to have to build by hand through TreasuryDirect. USFR takes a different technical approach — instead of holding fixed-rate bills, it holds floating-rate notes whose interest payment resets weekly against short-term Treasury auctions, so it reprices faster than a bill ladder when the Federal Reserve changes policy rates
💰 Comparing Yield, Cost, and Size
| ETF | Approx. Expense Ratio | Approx. Yield (Aug–Sep 2026) | Approx. AUM |
|---|---|---|---|
| WEEK | 0.19% | ~3.46% | ~$171 million |
| SGOV | 0.09% | ~3.66–3.67% | ~$106 billion |
| BIL | ~0.14% | ~3.57–3.67% | ~$46.2 billion |
| USFR | 0.15% | ~3.80–3.82% | Tens of billions (smaller than SGOV) |
A few things stand out. USFR has consistently offered the highest yield of the group, since its floating-rate structure reprices faster when rates move — though it has also shown slightly higher annualized volatility (about 0.3%) compared with SGOV's roughly 0.2%, a very small but real difference given how stable both funds are in absolute terms. SGOV remains the cheapest and largest of the group, which tends to translate into tighter bid-ask spreads and easier trading for large positions. WEEK is the priciest by expense ratio and by far the smallest fund, which is the tradeoff for its unique weekly-payout structure.
To put the fee gap in real dollars: on a $10,000 investment, BIL yields roughly $357 a year, SGOV about $366, and USFR about $382 — differences driven by both yield and expense ratio working together.
📈 One-Year Price Comparison
| ETF | 1-Year Total Return (Aug–Sep 2026) | Notable Detail |
|---|---|---|
| USFR | +4.03% (highest) | Floating-rate structure means it reprices fastest when interest rates move |
| SGOV | +3.84% | Largest and lowest-cost fund of the group, with the least price volatility |
| BIL | +3.75% | Longest track record among the four, dating back to 2007 |
| WEEK | +3.68% (lowest) | Launched March 6, 2025, so it's just past its first full year of trading; its 52-week range of $96.37–$100.10 is somewhat wider than the other three funds |
A few takeaways from plotting all four together over the trailing 12 months:
- The four lines sit close enough to nearly overlap on a chart — which is itself the point. These funds exist specifically to avoid large price swings, and the data bears that out.
- USFR's floating-rate structure let it capture rate movements fastest, giving it the top spot for the year.
- WEEK, being the newest and smallest fund, shows a slightly wider 52-week price range than the others, though still nowhere close to the volatility of equities.
| Ticker | 52-Week High | 52-Week Low | Range | Characteristics |
|---|---|---|---|---|
| WEEK | $100.88 | $98.00 | ~2.9% | Roundhill Weekly T-Bill ETF, includes early volatility from its March 2025 listing |
| SGOV | $100.73 | $100.27 | ~0.5% | iShares 0-3 Month Treasury Bond ETF |
| BIL | $91.77 | $91.26 | ~0.6% | SPDR Bloomberg 1-3 Month T-Bill ETF |
| USFR | $50.99 | $50.06 | ~1.9% | WisdomTree Floating Rate Treasury ETF |
Key takeaways
- SGOV and BIL are the most stable. Both have a 1-year range under 1%, living up to their reputation as true "cash alternatives."
- WEEK shows the widest range, largely due to its early price-discovery period right after its March 2025 launch. In recent months, however, it has traded in a very tight $99.9–$100.2 band.
- USFR resets weekly with floating rates, so it reacts faster to policy-rate changes than SGOV or BIL, resulting in a slightly wider range.
- All four are ultra-short-term Treasury products with very low principal risk. The real appeal isn't price movement — it's the yield (SGOV ~3.7%, BIL ~3.6%, USFR ~3.8–4.0%, WEEK ~3.7–3.8%).
Note: exact daily price series weren't available for all four funds from public sources at the time of writing, so the chart above smooths each fund's reported one-year total return into an approximate monthly progression. Actual price movement may have had small bumps around specific rate-change dates that a smoothed line won't capture.
⏱️ Why Payout Frequency Actually Matters
For most long-term investors, the difference between weekly and monthly distributions is a minor convenience. But for someone actively managing cash during a volatile market — say, someone parking proceeds from a stock sale while deciding when to reinvest — getting paid weekly instead of monthly means that cash becomes available to redeploy faster, and reinvested distributions can compound slightly more often.
(cite index="27-1">WEEK automates the reinvestment and rolling process that individual investors would otherwise have to manage by hand through a Treasury ladder</cite>, spreading holdings roughly evenly across several short-term maturities so that a new set of bills matures — and a new distribution goes out — every week.
⚙️ A Real-World Example: Riding Out a Volatile Market
To make this concrete, here's how the decision might play out for someone managing a real portfolio during a rough patch in the market.
Gregory Hale, a 58-year-old small business owner from Tampa, Florida, got nervous during a sharp two-week stock market selloff and decided to move about $60,000 out of his individual brokerage account and into cash while he reassessed his risk tolerance. Rather than letting the money sit in his brokerage's default cash sweep account earning very little, his advisor pointed him toward SGOV for the bulk of the position, given its low cost and enormous liquidity, and WEEK for a smaller slice he wanted to actively monitor with weekly income hitting his account.
Over the following two months, Gregory earned a modest but steady stream of income on both positions while the broader market stabilized. When he eventually decided to redeploy about half the money back into stocks, he sold his SGOV shares first, since the position was large and highly liquid, and kept the WEEK allocation as an ongoing "dry powder" reserve, appreciating the weekly cadence as a way to see his cash working even while it sat on the sidelines. He noted that the amount involved was modest relative to his overall portfolio and that none of these funds were a substitute for his long-term stock and bond allocation — just a temporary parking spot during a period of uncertainty.
⚠️ What These Funds Won't Do For You
It's worth being clear about the limits here. All four funds hold U.S. Treasury debt, which carries essentially no credit risk, but that doesn't mean they're risk-free in every sense — their yields float with short-term interest rates, so if the Federal Reserve cuts rates, the income from all four funds will decline accordingly, sometimes within weeks. None of them are designed to grow your money the way stocks can over the long run; their entire purpose is capital preservation and modest income, not growth. And unlike a bank savings account, these are not FDIC-insured — you're relying on the safety of U.S. Treasury securities themselves, which is generally considered about as safe as an investment gets, but is not technically the same protection as deposit insurance.
📝 Summary
- WEEK, SGOV, BIL, and USFR are all ultra-short U.S. Treasury ETFs designed to preserve capital while paying a yield close to the risk-free rate — a common place to park cash during stock market volatility.
- WEEK is unique for its weekly distribution schedule and automated T-bill-ladder approach, but it carries the highest expense ratio (0.19%) and is by far the smallest fund of the four.
- SGOV is the cheapest (0.09% expense ratio) and largest (~$106 billion in assets), making it a common default choice for simply parking cash.
- BIL sits in the middle on cost (~0.14%) with a long track record dating back to 2007 and strong liquidity.
- USFR has consistently offered the highest yield thanks to its floating-rate structure, but carries a slightly higher expense ratio and marginally more volatility than SGOV.
- All four are exempt from state and local income tax and hold very short-term U.S. government debt, making them low-risk but not risk-free — their yields fall when interest rates fall, and none of them are designed to grow your money the way stocks can.
- The right choice often comes down to priorities: SGOV or BIL for maximum simplicity and liquidity, USFR for the highest yield, and WEEK for investors who specifically want a weekly income cadence.
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※References and Sources
- Optimized Portfolio, "SGOV vs. BIL - Which ETF for U.S. T-Bills in 2026?" https://www.optimizedportfolio.com/sgov-vs-bil/
- Dividend Vision, "USFR vs SGOV vs BIL vs SHY: T-Bill Yields Compared 2026," https://www.dividendvision.com/compare/bil-vs-sgov-vs-shy-vs-usfr
- Dividend Vision, "USFR vs SGOV: Yield, Safety, Taxes & Cash Parking Compared 2026," https://www.dividendvision.com/compare/sgov-vs-usfr
- Dividend Vision, "BIL vs USFR: Yield, Fees & Income Comparison 2026," https://www.dividendvision.com/compare/bil-vs-usfr
- Dividend Vision, "BIL vs SGOV: Yield, Fees & Income Comparison 2026," https://www.dividendvision.com/compare/bil-vs-sgov
- ETF BFF, "SGOV vs BIL: 0.09% vs 0.1356% for the Same T-Bills," https://etfbff.com/research/compare/sgov-vs-bil/
- ETF BFF, "SGOV vs BIL vs SHV (2026): Best T-Bill ETF?" https://etfbff.com/research/compare/sgov-vs-bil-vs-shv/
- Roundhill Investments, "Weekly T-Bill ETF | Weekly Income from T-Bills," https://www.roundhillinvestments.com/etf/week/
- Yahoo Finance, "Roundhill's WEEK ETF Quietly Pays Treasury Bill Investors Every Wednesday Like Clockwork," https://finance.yahoo.com/markets/options/articles/roundhill-week-etf-quietly-pays-102051143.html
- Yahoo Finance, "Roundhill Weekly T-Bill ETF (WEEK) Stock Price, News, Quote & History," https://finance.yahoo.com/quote/WEEK/
- AAII, "Roundhill Weekly T-Bill ETF (WEEK)," https://www.aaii.com/etf/ticker/WEEK
- Snowball Analytics, "Roundhill Weekly T-Bill ETF (WEEK) Stock Price, Key Metrics & Analyst Forecasts," https://snowball-analytics.com/public/asset/WEEK.US.USD
- Dividend Vision, "USFR vs SGOV: Yield, Safety, Taxes & Cash Parking Compared 2026," https://www.dividendvision.com/compare/sgov-vs-usfr
- FinanceCharts, "iShares 0-3 Month Treasury Bond ETF (SGOV) Total Return," https://www.financecharts.com/etfs/SGOV/performance/total-return
- StockAnalysis.com, "WEEK ETF Stock Price & Overview," https://stockanalysis.com/etf/week/
- ETF Database, "WEEK Roundhill Weekly T-Bill ETF," https://etfdb.com/etf/WEEK/
💥Disclaimer:
This article is for informational and educational purposes only and does not constitute financial or investment advice. The story of "Gregory Hale" is an illustrative composite based on commonly reported patterns among investors using cash ETFs, not an account of a real, named individual. Yields, expense ratios, and fund sizes change frequently based on market conditions and Federal Reserve policy — always verify current figures directly with each fund provider before investing, and consider consulting a licensed financial advisor about what fits your own situation.
