Which returned more over the last year, BIL or IBB?

In the year to Sep 12, 2026, with distributions reinvested, BIL returned +3.7% and IBB returned +41.5%, so IBB returned more. One year is one year; the longer windows are in the table.

Which is cheaper, BIL or IBB?

BIL charges 0.14% a year and IBB charges 0.44%, so BIL is cheaper. Fees come from each fund's prospectus.

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

ETFIQetfiq.com · independent ETF data

BIL vs IBB: how they differ

BIL is a short-term Treasury fund and IBB an equity index fund, and over the year IBB returned more, +41.5% against +3.7%.

SPDR Bloomberg 1-3 Month T-Bill ETF and iShares Biotechnology ETF.

BIL and IBB on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	BIL SPDR Bloomberg 1-3 Month T-Bill ETF	IBB iShares Biotechnology ETF
Where it sits	Core index fund	Core index fund
Issuer	State Street	iShares
What it is	1-3 month T-bills	Biotechnology
Total return, 1 year	+3.7%	+41.5%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	−13.8 pts	+24.0 pts
Expense ratio	0.14%	0.44%
Holdings	not filed	248

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.

IBB in plain words

IBB is an index equity fund tracking the Biotechnology. Over the year to Sep 11, 2026 it returned +41.5% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.44% a year. By its holdings filed for Jun 30, 2026, 36% of the fund by weight is stocks the S&P 500 also holds, across 248 positions, with the top ten at 44.8%. It sat 6.5% below its high of Aug 19, 2026 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, BIL or IBB?: In the year to Sep 12, 2026, with distributions reinvested, BIL returned +3.7% and IBB returned +41.5%, so IBB returned more. One year is one year; the longer windows are in the table.
Which is cheaper, BIL or IBB?: BIL charges 0.14% a year and IBB charges 0.44%, so BIL is cheaper. Fees come from each fund's prospectus.

Other comparisons

Where to next

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.

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

A comparison is not a recommendation. Standards and sources