TFLO vs. SPTL
TFLO (iShares Treasury Floating Rate Bond ETF) and SPTL (SPDR Portfolio Long Term Treasury ETF) are both Government Bonds funds - TFLO tracks the Bloomberg U.S. Treasury Floating Rate Index while SPTL tracks the Bloomberg Long U.S. Treasury Index. Both are passively managed. Over the past 10 years, TFLO returned 2.36%/yr vs -1.04%/yr for SPTL. At a correlation of -0.00, they often move in opposite directions. TFLO charges 0.15%/yr vs 0.03%/yr for SPTL.
Performance
TFLO vs. SPTL - Performance Comparison
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Returns By Period
In the year-to-date period, TFLO achieves a 1.59% return, which is significantly higher than SPTL's -0.19% return. Over the past 10 years, TFLO has outperformed SPTL with an annualized return of 2.36%, while SPTL has yielded a comparatively lower -1.04% annualized return.
TFLO
- 1D
- 0.00%
- 1M
- 0.29%
- YTD
- 1.59%
- 6M
- 1.92%
- 1Y
- 3.97%
- 3Y*
- 4.74%
- 5Y*
- 3.63%
- 10Y*
- 2.36%
SPTL
- 1D
- 0.19%
- 1M
- 0.43%
- YTD
- -0.19%
- 6M
- -1.00%
- 1Y
- 3.88%
- 3Y*
- -0.59%
- 5Y*
- -5.28%
- 10Y*
- -1.04%
TFLO vs. SPTL - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TFLO iShares Treasury Floating Rate Bond ETF | 1.59% | 4.22% | 5.34% | 5.12% | 1.99% | -0.02% | 0.43% | 2.04% | 1.76% | 1.01% |
SPTL SPDR Portfolio Long Term Treasury ETF | -0.19% | 5.28% | -6.23% | 3.30% | -29.44% | -4.99% | 18.07% | 13.74% | -1.57% | 9.01% |
Correlation
The correlation between TFLO and SPTL is -0.09, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.09 |
Correlation (3Y) Calculated over the trailing 3-year period | -0.05 |
Correlation (5Y) Calculated over the trailing 5-year period | -0.02 |
Correlation (10Y) Calculated over the trailing 10-year period | -0.00 |
Correlation (All Time) Calculated using the full available price history since Feb 5, 2014 | -0.00 |
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Return for Risk
TFLO vs. SPTL — Risk / Return Rank
TFLO
SPTL
TFLO vs. SPTL - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Treasury Floating Rate Bond ETF (TFLO) and SPDR Portfolio Long Term Treasury ETF (SPTL). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| TFLO | SPTL | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +13.65 | ||
| Sortino ratioReturn per unit of downside risk | +50.17 | ||
| Omega ratioGain probability vs. loss probability | 13.94 | 1.08 | +12.86 |
| Calmar ratioReturn relative to maximum drawdown | 201.22 | 0.55 | +200.67 |
| Martin ratioReturn relative to average drawdown | 823.26 | 1.44 | +821.83 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| TFLO | SPTL | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 14.09 | 0.44 | +13.65 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 10.30 | -0.36 | +10.66 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 5.20 | -0.07 | +5.27 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.99 | 0.24 | +0.74 |
Drawdowns
TFLO vs. SPTL - Drawdown Comparison
The maximum TFLO drawdown since its inception was -5.01%, smaller than the maximum SPTL drawdown of -46.20%. Use the drawdown chart below to compare losses from any high point for TFLO and SPTL.
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Drawdown Indicators
| TFLO | SPTL | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -5.01% | -46.20% | +41.19% |
Max Drawdown (1Y)Largest decline over 1 year | -0.02% | -7.04% | +7.02% |
Max Drawdown (3Y)Largest decline over 3 years | -0.04% | -17.55% | +17.51% |
Max Drawdown (5Y)Largest decline over 5 years | -0.13% | -41.02% | +40.89% |
Max Drawdown (10Y)Largest decline over 10 years | -0.16% | -46.20% | +46.04% |
Current DrawdownCurrent decline from peak | 0.00% | -36.75% | +36.75% |
Average DrawdownAverage peak-to-trough decline | -0.10% | -14.25% | +14.15% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.00% | 2.70% | -2.70% |
Volatility
TFLO vs. SPTL - Volatility Comparison
The current volatility for iShares Treasury Floating Rate Bond ETF (TFLO) is 0.07%, while SPDR Portfolio Long Term Treasury ETF (SPTL) has a volatility of 2.60%. This indicates that TFLO experiences smaller price fluctuations and is considered to be less risky than SPTL based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TFLO | SPTL | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.07% | 2.60% | -2.53% |
Volatility (6M)Calculated over the trailing 6-month period | 0.20% | 5.97% | -5.77% |
Volatility (1Y)Calculated over the trailing 1-year period | 0.28% | 8.92% | -8.64% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 0.35% | 14.61% | -14.26% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 0.46% | 13.94% | -13.48% |
TFLO vs. SPTL - Expense Ratio Comparison
TFLO has a 0.15% expense ratio, which is higher than SPTL's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
TFLO vs. SPTL - Dividend Comparison
TFLO's dividend yield for the trailing twelve months is around 3.90%, less than SPTL's 4.21% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SPTL SPDR Portfolio Long Term Treasury ETF | 4.21% | 4.12% | 4.03% | 3.24% | 2.75% | 1.68% | 1.71% | 2.45% | 2.69% | 2.53% | 2.56% | 2.60% |
TFLO iShares Treasury Floating Rate Bond ETF | 3.90% | 4.16% | 5.21% | 4.88% | 1.68% | 0.00% | 0.36% | 2.08% | 1.65% | 0.86% | 0.31% | 0.15% |
Frequently Asked Questions
TFLO and SPTL have a correlation of -0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SPTL has higher volatility (2.60%) compared to TFLO (0.07%). In terms of maximum drawdown, TFLO dropped -5.01% vs SPTL's -46.20%.
On 10-year performance, TFLO leads with 2.36% vs -1.04% for SPTL. On fees, SPTL is cheaper at 0.03% per year. On volatility, TFLO has been the lower-risk option at 0.07%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, TFLO has performed better with a 2.36% return vs -1.04%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
SPTL is cheaper with a 0.03% expense ratio, compared with 0.15% for TFLO.
SPTL has the higher dividend yield at 4.21%, compared with 3.90% for TFLO.
TFLO tracks Bloomberg U.S. Treasury Floating Rate Index, while SPTL tracks Bloomberg Long U.S. Treasury Index. They also come from different issuers: iShares and State Street. Their fees differ too: 0.15% for TFLO and 0.03% for SPTL.
TFLO currently has the higher Sharpe Ratio (14.09 vs 0.44), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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