SPDR Bloomberg 1-3 Month T-Bill ETF (BIL)
Bonds · T-Bills · data since 2007-05-30 · last close 2026-08-18
1d
+0.01%
7d
+0.08%
30d
+0.31%
YTD
+2.26%
1y
+3.77%
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.2 | · | · | · | · |
| 2025 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.3 | 0.4 | 0.4 | 0.3 | 0.3 | 0.3 | 0.3 |
| 2024 | 0.4 | 0.4 | 0.4 | 0.4 | 0.5 | 0.4 | 0.5 | 0.5 | 0.4 | 0.4 | 0.4 | 0.4 |
| 2023 | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.5 | 0.4 | 0.5 | 0.4 | 0.4 | 0.5 | 0.4 |
| 2022 | 0.0 | -0.0 | 0.1 | -0.0 | 0.0 | 0.1 | 0.0 | 0.2 | 0.2 | 0.2 | 0.3 | 0.4 |
| 2021 | 0.0 | -0.0 | -0.0 | 0.0 | -0.0 | -0.0 | -0.0 | -0.0 | 0.0 | -0.0 | -0.0 | 0.0 |
| 2020 | 0.1 | 0.1 | 0.2 | -0.0 | -0.0 | 0.0 | 0.0 | 0.0 | -0.0 | 0.0 | -0.0 | 0.0 |
| 2019 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 |
| 2018 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | 0.2 | 0.2 | 0.2 |
| 2017 | 0.0 | 0.1 | -0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| 2016 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.0 | 0.0 |
| 2015 | -0.0 | 0.0 | 0.0 | -0.0 | -0.0 | 0.0 | 0.0 | 0.0 | -0.0 | -0.0 | 0.0 | -0.0 |
| 2014 | 0.0 | 0.0 | -0.0 | 0.0 | 0.0 | -0.0 | -0.0 | 0.0 | 0.0 | -0.0 | 0.0 | -0.0 |
| 2013 | 0.0 | 0.0 | 0.0 | -0.0 | 0.0 | -0.0 | 0.0 | 0.0 | -0.0 | -0.0 | -0.0 | 0.0 |
| 2012 | -0.0 | 0.0 | -0.0 | 0.0 | 0.0 | -0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.0 | 0.0 |
| 2011 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.0 | -0.0 | 0.0 | -0.0 |
| 2010 | 0.0 | -0.0 | 0.0 | -0.0 | 0.0 | 0.0 | -0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.0 |
| 2009 | 0.2 | 0.0 | -0.0 | 0.1 | 0.0 | -0.0 | -0.1 | 0.1 | 0.0 | 0.0 | -0.0 | 0.0 |
| 2008 | 0.4 | 0.2 | 0.2 | -0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.5 | -0.2 | -0.1 | 0.0 |
| 2007 | · | · | · | · | 0.0 | 0.4 | 0.4 | 0.4 | 0.2 | 0.4 | 0.4 | 0.2 |
| Avg | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
Seasonality — average by calendar month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | +0.1% | +0.1% | +0.1% | +0.1% | +0.1% | +0.1% | +0.1% | +0.1% | +0.1% | +0.1% | +0.1% | +0.1% |
| Win rate | 58%/19 | 58%/19 | 47%/19 | 53%/19 | 65%/20 | 55%/20 | 60%/20 | 58%/19 | 63%/19 | 68%/19 | 53%/19 | 63%/19 |
Win rate = share of positive months / sample size.
Risk & extremes
Max drawdown
-0.8%
Worst peak-to-trough fall on record
Monthly volatility
±0.2%
Std. dev. of monthly returns
Positive months
58%
Share of completed months in the green
Best month
+0.51%
2008-09
Worst month
-0.23%
2008-10
Longest streaks
51▲ / 14▼
Consecutive up / down months
Drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
About SPDR Bloomberg 1-3 Month T-Bill ETF
SPDR Bloomberg 1-3 Month T-Bill ETF, tracked here from its first session onward — every monthly, quarterly and weekly return on record since 2007, with no gaps filled in and nothing smoothed. Since 2007 it has ground out +30% overall — not every story is a rocket.
Did you know?
- Its best month on record was September 2008 at +0.51%; its worst, October 2008 at -0.23%.
Trivia for entertainment — the numbers come from our price data; the jokes don't.