BILS vs. GSY
Compare and contrast key facts about SPDR Bloomberg 3-12 Month T-Bill ETF (BILS) and Invesco Ultra Short Duration ETF (GSY).
BILS and GSY are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. BILS is a passively managed fund by State Street that tracks the performance of the Bloomberg 3-12 Month U.S. Treasury Bill Index. It was launched on Sep 24, 2020. GSY is an actively managed fund by Invesco. It was launched on Feb 12, 2008.
Performance
BILS vs. GSY - Performance Comparison
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BILS vs. GSY - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | |
|---|---|---|---|---|---|---|---|
BILS SPDR Bloomberg 3-12 Month T-Bill ETF | 0.80% | 4.23% | 5.17% | 4.92% | 0.90% | -0.08% | 0.00% |
GSY Invesco Ultra Short Duration ETF | 0.80% | 4.96% | 5.95% | 5.99% | 0.01% | 0.03% | 0.29% |
Returns By Period
As of year-to-date, both investments have demonstrated similar returns, with BILS at 0.80% and GSY at 0.80%.
BILS
- 1D
- 0.02%
- 1M
- 0.26%
- YTD
- 0.80%
- 6M
- 1.82%
- 1Y
- 3.99%
- 3Y*
- 4.67%
- 5Y*
- 3.17%
- 10Y*
- —
GSY
- 1D
- 0.04%
- 1M
- 0.08%
- YTD
- 0.80%
- 6M
- 1.92%
- 1Y
- 4.52%
- 3Y*
- 5.49%
- 5Y*
- 3.51%
- 10Y*
- 2.84%
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BILS vs. GSY - Expense Ratio Comparison
BILS has a 0.14% expense ratio, which is lower than GSY's 0.22% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Return for Risk
BILS vs. GSY — Risk / Return Rank
BILS
GSY
BILS vs. GSY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for SPDR Bloomberg 3-12 Month T-Bill ETF (BILS) and Invesco Ultra Short Duration ETF (GSY). 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.
| BILS | GSY | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 16.39 | 10.64 | +5.75 |
Sortino ratioReturn per unit of downside risk | 75.13 | 24.03 | +51.10 |
Omega ratioGain probability vs. loss probability | 26.69 | 6.27 | +20.42 |
Calmar ratioReturn relative to maximum drawdown | 132.67 | 25.29 | +107.38 |
Martin ratioReturn relative to average drawdown | 1,118.82 | 176.75 | +942.07 |
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
| BILS | GSY | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 16.39 | 10.64 | +5.75 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 10.37 | 6.07 | +4.30 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 2.33 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 9.65 | 0.45 | +9.20 |
Correlation
The correlation between BILS and GSY is 0.43, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
BILS vs. GSY - Dividend Comparison
BILS's dividend yield for the trailing twelve months is around 3.96%, less than GSY's 4.43% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BILS SPDR Bloomberg 3-12 Month T-Bill ETF | 3.60% | 4.08% | 5.01% | 4.98% | 1.61% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
GSY Invesco Ultra Short Duration ETF | 4.43% | 4.56% | 5.31% | 4.95% | 1.70% | 0.58% | 1.45% | 2.71% | 2.30% | 1.80% | 1.21% | 1.17% |
Drawdowns
BILS vs. GSY - Drawdown Comparison
The maximum BILS drawdown since its inception was -0.41%, smaller than the maximum GSY drawdown of -12.14%. Use the drawdown chart below to compare losses from any high point for BILS and GSY.
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Drawdown Indicators
| BILS | GSY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -0.41% | -12.14% | +11.73% |
Max Drawdown (1Y)Largest decline over 1 year | -0.03% | -0.18% | +0.15% |
Max Drawdown (5Y)Largest decline over 5 years | -0.40% | -1.48% | +1.08% |
Max Drawdown (10Y)Largest decline over 10 years | — | -5.25% | — |
Current DrawdownCurrent decline from peak | 0.00% | 0.00% | 0.00% |
Average DrawdownAverage peak-to-trough decline | -0.04% | -2.41% | +2.37% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.00% | 0.03% | -0.03% |
Volatility
BILS vs. GSY - Volatility Comparison
The current volatility for SPDR Bloomberg 3-12 Month T-Bill ETF (BILS) is 0.05%, while Invesco Ultra Short Duration ETF (GSY) has a volatility of 0.15%. This indicates that BILS experiences smaller price fluctuations and is considered to be less risky than GSY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BILS | GSY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.05% | 0.15% | -0.10% |
Volatility (6M)Calculated over the trailing 6-month period | 0.15% | 0.28% | -0.13% |
Volatility (1Y)Calculated over the trailing 1-year period | 0.24% | 0.43% | -0.19% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 0.31% | 0.58% | -0.27% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 0.30% | 1.22% | -0.92% |