TFLOvsSPTUETF Comparison
VS
ETF 2
SPTU
State Street SPDR Portfolio Ultra Short T-Bill ETF
This fund is part of
Money Market Bonds
+0.02%
iShares Treasury Floating Rate Bond ETF (TFLO) belongs to the US Government Bonds segment. State Street SPDR Portfolio Ultra Short T-Bill ETF (SPTU) is part of the Money Market Bonds segment. TFLO's top 2 sector exposures are Sovereign and Non-Corporate. In contrast, SPTU's top sector exposures are Sovereign. TFLO is more expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.05% for SPTU. TFLO is up 3.16% year-to-date (YTD) with +$759M in YTD flows. SPTU performs worse with 2.94% YTD performance, and +$6M in YTD flows. Run a side-by-side ETF comparison of TFLO and SPTU below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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TFLO vs SPTU performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/23/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | TFLO SPTU | +0.34%+0.37% | +1.01%+0.95% | +3.16%+2.94% | +3.98%+3.72% | +14.34%n/a | +21.42%n/a |
| Flows | TFLO SPTU | +$273M+$3M | +$688M+$3M | +$759M+$6M | +$688M+$7M | -$3.48B- | +$6.94B- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | TFLO SPTU | +0.15%+0.16% | +0.16%+0.16% | +0.20%n/a | +0.21%n/a |
| Max drawdown | TFLO SPTU | n/an/a | n/an/a | n/an/a | -0.03%n/a |
| Max drawdown duration | TFLO SPTU | n/an/a | n/an/a | n/an/a | 27dn/a |
Trading data
TFLO | SPTU | |
Last sale 10/23/2026 at 1:30 PM | $50.65 | $25.07 |
| Previous close 10/22/2026 | $50.64 | $25.06 |
| Consolidated volume 10/22/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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TFLO | SPTU | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/23/2026 at 1:30 PM
Live
Closed
TFLO | SPTU | |
|---|---|---|
| Last price | $50.65 | $25.07 |
| 1D performance | +0.02% | +0.04% |
| AuM | $7.24 B | $16.80 M |
| E/R | 0.15% | 0.05% |
Characteristics
TFLO | SPTU | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | State Street Investment Management |
| Benchmark | Bloomberg U.S. Treasury Floating Rate Index | ICE BofA US Treasury Bill Index |
| N° of holdings | 9 | 36 |
| Asset class | Bonds | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | February 3, 2014 | October 8, 2025 |
| ESG | No | No |
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Exposure
Countries
TFLO
USA
99.68%
Other
0.32%
SPTU
USA
89.55%
Other
10.45%
Sectors
TFLO
Sovereign
99.67%
Other
0.33%
SPTU
Sovereign
89.55%
Other
10.45%
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Diversification
TFLO
Total weight of top 9 holdings out of 9
99.68%
SPTU
Total weight of top 15 holdings out of 15
59.84%
Top 15 holdings
Data as of August 31, 2026
TFLO
USA, Notes FRN 30apr2028, USD (BB-2028)
14.42%
USA, Notes FRN 31oct2027, USD (BK-2027)
13.42%
USA, Notes FRN 31jan2028, USD (AX-2028)
12.97%
USA, Notes FRN 31oct2026, USD (BK-2026)
12.54%
USA, Notes FRN 30apr2027, USD (BB-2027)
12.46%
USA, Notes FRN 31jan2027, USD (AX-2027)
12.45%
USA, Notes FRN 31jul2027, USD (BF-2027)
12.13%
USA, Notes FRN 31jul2028, USD (BF-2028)
9.29%
BlackRock Cash Funds - Treasury
0.01%
SPTU
USA, Bills 0% 1oct2026, USD (364D)
6.90%
USA, Bills 0% 8oct2026, USD (182D)
5.78%
USA, Bills 0% 27nov2026, USD (364D)
4.66%
USA, Bills 0% 29oct2026, USD (364D)
4.54%
USA, Bills 0% 13oct2026, USD (119D)
3.79%
USA, Bills 0% 5nov2026, USD (182D)
3.78%
USA, Bills 0% 12nov2026, USD (182D)
3.78%
USA, Bills 0% 19nov2026, USD (182D)
3.78%
USA, Bills 0% 20oct2026, USD (119D)
3.71%
USA, Bills 0% 6oct2026, USD (119D)
3.61%
USA, Bills 0% 15oct2026, USD (182D)
3.43%
USA, Bills 0% 22oct2026, USD (182D)
3.43%
USA, Bills 0% 24dec2026, USD (363D)
3.42%
USA, Bills 0% 18feb2027, USD (364D)
2.73%
USA, Bills 0% 21jan2027, USD (364D)
2.51%
Frequently asked questions about TFLO and SPTU
How have the TFLO and SPTU ETFs performed in 2026?
As of October 23, 2026, TFLO is up 3.16% year-to-date (YTD), while SPTU has returned 2.94%. That puts TFLO better performer ahead so far this year.
Which ETF is attracting more investor money: TFLO or SPTU?
Year-to-date, the TFLO ETF saw +$759M in flows, compared to +$6M for SPTU.
Which ETF is more volatile: TFLO or SPTU?
Over the past year, TFLO had a volatility of 0.16%, while SPTU experienced 0.16%.
Which ETF is bigger: TFLO or SPTU?
As of October 23, 2026, TFLO holds $7.24 B in assets under management (AUM), while SPTU manages $16.80 M.
What sectors do the TFLO and SPTU ETFs invest in?
TFLO leans toward sectors like Sovereign. Meanwhile, SPTU focuses on Sovereign.
What are the top holdings of the TFLO ETF and SPTU ETF?
TFLO top holdings include USA, Notes FRN 30apr2028, USD (BB-2028), USA, Notes FRN 31oct2027, USD (BK-2027) and USA, Notes FRN 31jan2028, USD (AX-2028). SPTU holds in its top three: USA, Bills 0% 1oct2026, USD (364D), USA, Bills 0% 8oct2026, USD (182D) and USA, Bills 0% 27nov2026, USD (364D).
Which ETF is more diversified: TFLO or SPTU?
TFLO has 9 securities. SPTU has 41 securities and a top 15 weight of 59.84%.
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Latest news about TFLO & SPTU
The New Interest Rate Regime of 2024: Which Fixed Income ETFs Stand to Benefit?
February 14, 2024
TFLO
Higher Interest Rates for Longer: The Case for Floating Rate Bond ETFs
October 13, 2023
TFLO
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