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Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

AGG vs BIL: how they differ

AGG is a bond index fund and BIL a short-term Treasury fund, and over the year BIL returned more, +3.7% against −0.7%.

iShares Core U.S. Aggregate Bond ETF and SPDR Bloomberg 1-3 Month T-Bill ETF.

AGG and BIL on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
AGG
iShares Core U.S. Aggregate Bond ETF
BIL
SPDR Bloomberg 1-3 Month T-Bill ETF
Where it sitsCore index fundCore index fund
IssueriSharesState Street
What it isUS aggregate bonds1-3 month T-bills
Total return, 1 year−0.7%+3.7%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500−18.2 pts−13.8 pts
Expense ratio0.03%0.14%

AGG in plain words

AGG is a bond fund tracking the US aggregate bonds. Over the year to Sep 11, 2026 it returned −0.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. It sat 3.7% below its high of Aug 4, 2020 on Sep 11, 2026.

BIL in plain words

BIL is a cash and treasury bills tracking the 1-3 month T-bills. Over the year to Sep 11, 2026 it returned +3.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.14% a year.

Questions people ask

Which returned more over the last year, AGG or BIL?
In the year to Sep 12, 2026, with distributions reinvested, AGG returned −0.7% and BIL returned +3.7%, so BIL returned more. One year is one year; the longer windows are in the table.
Which is cheaper, AGG or BIL?
AGG charges 0.03% a year and BIL charges 0.14%, so AGG is cheaper. Fees come from each fund's prospectus.

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Where these figures came from

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.

AGG against BIL, ETFIQ, data as of Sep 12, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, AGG against BIL, data as of Sep 12, 2026. https://etfiq.com/compare/any/AGG-BIL Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources