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

In the year to Sep 12, 2026, with distributions reinvested, IBB returned +41.5% and IWC returned +31.3%, so IBB returned more. One year is one year; the longer windows are in the table.

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

ETFIQetfiq.com · independent ETF data

IBB vs IWC: how they differ

IBB and IWC are both equity index funds, and over the year IBB returned more, +41.5% against +31.3%.

iShares Biotechnology ETF and iShares Micro-Cap ETF.

IBB and IWC on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	IBB iShares Biotechnology ETF	IWC iShares Micro-Cap ETF
Where it sits	Core index fund	Core index fund
Issuer	iShares	iShares
What it is	Biotechnology	Russell Microcap
Total return, 1 year	+41.5%	+31.3%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	+24.0 pts	+13.8 pts
Expense ratio	0.44%	not published
Holdings	248	not filed

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.

IWC in plain words

IWC is an index equity fund tracking the Russell Microcap. Over the year to Sep 11, 2026 it returned +31.3% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. It sat 5.0% below its high of Aug 14, 2026 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, IBB or IWC?: In the year to Sep 12, 2026, with distributions reinvested, IBB returned +41.5% and IWC returned +31.3%, so IBB returned more. One year is one year; the longer windows are in the table.

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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.

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

A comparison is not a recommendation. Standards and sources