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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

IWM vs USO: how they differ

IWM is an equity index fund and USO a commodity fund, and over the year USO returned more, +112.2% against +21.2%.

iShares Russell 2000 ETF and United States Oil Fund, LP.

IWM and USO on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
IWM
iShares Russell 2000 ETF
USO
United States Oil Fund, LP
Where it sitsCore index fundCore index fund
IssueriSharesUnited
What it isRussell 2000Oil
Total return, 1 year+21.2%+112.2%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500+3.7 pts+94.7 pts
Expense ratio0.19%not published
Holdings2014not filed

IWM in plain words

IWM is an index equity fund tracking the Russell 2000. Over the year to Sep 11, 2026 it returned +21.2% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.19% a year. By its holdings filed for Jun 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 2014 positions, with the top ten at 3.4%. It sat 5.3% below its high of Aug 14, 2026 on Sep 11, 2026.

USO in plain words

USO is a commodity fund tracking the Oil. Over the year to Sep 11, 2026 it returned +112.2% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. It sat 57.1% below its high of Apr 8, 2011 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, IWM or USO?
In the year to Sep 12, 2026, with distributions reinvested, IWM returned +21.2% and USO returned +112.2%, so USO 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.

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

A comparison is not a recommendation. Standards and sources