Data as of Oct 28, 2026.

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BIL vs IEI: Differences, Returns & Fees

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BIL's duration was 0.2 years on Jun 30, 2026 and IEI's 4.3 on Aug 31, 2026; BIL charges 0.14% to IEI's 0.15%.

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Net assets on Oct 27, 2026: $48.7bn for SPDR Bloomberg 1-3 Month T-Bill ETF and $17.0bn for iShares 3-7 Year Treasury Bond ETF.

At a glance
+3.7%
BIL total return, 1 year
−1.1%
IEI total return, 1 year
0.14%
BIL expense ratio
0.15%
IEI expense ratio

Pair scorecard

BIL costs 0.01 points a year less; their one-year returns differ by 4.8 points; BIL is 2.9 times larger.

BIL vs IEI: Differences, Returns & Fees
MeasureBILIEI
Return
Total return, 1 year+3.7%−1.1%
Benchmark
What it tracksBloomberg 1-3 Month U.S. Treasury Bill IndexICE U.S. Treasury 3-7 Year Bond Index
Cost and size
Expense ratio0.14%0.15%
Net assets, as of Oct 27, 2026$48.7bn$17.0bn
Holdings
Holdings in common0%

Holdings in common uses holdings dated Jun 30, 2026 and Aug 31, 2026. Method

What they share

0%

By the books each fund has filed, BIL and IEI hold 0% of their money in the same securities at the same weight. Holdings dated Jun 30, 2026 and Aug 31, 2026.

0 half 100%

half

0% in common

Positions both hold · largest shared weight first BIL IEI
Only in one fund ↓
Only in BIL
U.S. Treasury Bills, due Aug 6, 2026 12.04%
U.S. Treasury Bills, due Sep 3, 2026 9.04%
U.S. Treasury Bills, due Aug 27, 2026 7.22%
U.S. Treasury Bills, due Sep 17, 2026 7.03%
U.S. Treasury Bills, due Sep 10, 2026 6.98%
U.S. Treasury Bills, due Sep 24, 2026 6.97%
U.S. Treasury Bills, due Aug 13, 2026 6.85%
U.S. Treasury Bills, due Aug 20, 2026 6.49%
Only in IEI
U.S. Treasury Notes, due Nov 30, 2030 2.90%
U.S. Treasury Notes, due Feb 15, 2032 2.30%
U.S. Treasury Notes, due Feb 28, 2030 2.29%
U.S. Treasury Notes, due Nov 15, 2031 2.26%
U.S. Treasury Notes, due Aug 31, 2030 2.24%
U.S. Treasury Notes, due May 15, 2033 2.17%
U.S. Treasury Notes, due Aug 15, 2031 2.11%
U.S. Treasury Notes, due Feb 15, 2033 2.10%
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Side by side

BIL SPDR Bloomberg 1-3 Month T-Bill ETF IEI iShares 3-7 Year Treasury Bond ETF
Where it sits Bond ETF Bond ETF
What it is Tracks an index of 1-3 month T-bills Tracks an index of 3-7 Year Treasury Bond
Total return, 1 year +3.7% −1.1%
Expense ratio 0.14% 0.15%
Holdings 26 82
Net assets, as of Oct 27, 2026 $48.7bn $17.0bn

BIL and IEI on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

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About each fund
BIL

BIL tracks an index of 1-3 month T-bills. Over the year to Oct 28, 2026 it returned +3.7% with distributions reinvested. The prospectus expense ratio is 0.14% a year.

IEI

IEI tracks an index of 3-7 Year Treasury Bond. Over the year to Oct 28, 2026 it returned −1.1% with distributions reinvested. The prospectus expense ratio is 0.15% a year.

Questions people ask

Which returned more over the last year, BIL or IEI?
In the year to Oct 28, 2026, with distributions reinvested, BIL returned +3.7% and IEI −1.1%.
Which is cheaper, BIL or IEI?
BIL is cheaper, by 0.01 percentage points a year. That is about $1 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, BIL against IEI, data as of Oct 28, 2026. https://etfiq.com/compare/any/bil-vs-iei

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