SGOV is the strongest cash ETF option for investors who prioritize minimal rate sensitivity and Treasury exposure. TFLO and USFR suit investors who want income that adjusts with short-term rates, while ICSH trades greater credit and rate risk for a higher stated yield. A cash ETF is an exchange-traded fund used to hold money temporarily in short-term securities. No fund is universally "best"; the right choice depends on when the money is needed and whether the investor accepts credit or price risk.
Table of Contents
- Rates are uncertain, not currently shifting
- SGOV for a conservative Treasury reserve
- TFLO and USFR for floating-rate Treasury exposure
- When the higher yield of ICSH may not be worth it
Rates are uncertain, not currently shifting
The Federal Reserve held its target federal-funds range at 3.50%–3.75% on july 29. It also cited elevated uncertainty and inflation above its 2% goal in the July 29 Federal Reserve statement. That distinction matters.
Investors do not need to position for a rate change already underway, but they should consider how each fund would respond if short-term rates eventually fall or rise. Duration helps with that comparison. It estimates a bond portfolio's sensitivity to rate movements: lower duration generally means less price sensitivity.
SGOV for a conservative Treasury reserve
SGOV holds Treasury bills maturing in three months or less. Its portfolio was 99.42% U.S. Treasury debt on August 11, making its credit exposure materially different from funds that use corporate paper or bank instruments.
BlackRock reported a 0.10-year effective duration, a 3.59% 30-day SEC yield, and a 0.09% expense ratio for SGOV. Those figures make it the clearest candidate here for money whose owner values limited rate sensitivity over the highest available yield. SGOV can still fluctuate in the market. Its appeal is the combination of very short Treasury holdings and a lower expense ratio than the two floating-rate Treasury alternatives discussed below.
TFLO and USFR for floating-rate Treasury exposure
TFLO and USFR invest in U.S. Treasury floating-rate notes. Their interest payments reset with short-term Treasury rates, so their income can adjust more quickly than income from fixed-rate bonds. BlackRock reported that TFLO had a 3.70% 30-day SEC yield, a 0.01-year effective duration, and a 0.15% expense ratio as of August 10–11.
WisdomTree reported a 3.71% SEC yield, 0.02-year duration, and 0.15% expense ratio for USFR as of August 11–12. The funds' published figures are nearly identical, so neither has a decisive advantage from yield, duration, or expense ratio alone. Their key limitation is also similar: if short-term Treasury-bill rates fall, their income should adjust downward. WisdomTree expressly warns that USFR's yield fluctuates and is not guaranteed.
When the higher yield of ICSH may not be worth it
ICSH reported the highest yield in this group: 4.19% as of August 12. However, it also had a 0.71-year duration and held ultra-short investment-grade bonds and money-market instruments, including commercial paper, certificates of deposit, and funding agreements. That makes ICSH an ultra-short bond fund rather than a Treasury-cash substitute.
The additional 0.48 to 0.60 percentage point of stated yield over the three Treasury funds came with more duration and non-Treasury credit exposure. A practical selection process is: etfs trade intraday, but their market prices can sit above or below net asset value. Investors may also pay a bid-ask spread, so the SEC's ETF investor bulletin supports accounting for execution costs instead of treating an ETF like a bank deposit.
- Choose SGOV when preserving a Treasury-only, low-duration profile matters most.
- Consider TFLO or USFR when near-zero duration and income that follows short-term Treasury rates fit the need.
- Consider ICSH only when the higher stated yield justifies its added credit exposure and price sensitivity.
- Avoid using any of these ETFs for money that must be available at an exact value at an exact moment.