Get the weekly note

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

ETFIQetfiq.com · independent ETF data

BITO vs IWM: how they differ

BITO and IWM hold 0% of their weight in the same names, and IWM returned more over the year.

ProShares Bitcoin ETF and iShares Russell 2000 ETF.

What they hold in common

By the books each fund has filed, BITO and IWM hold 0% of their money in the same securities at the same weight.

Largest positions each one holds and the other does not
Only in BITOOnly in IWM
ProShares GENIUS Money Market ETF 100.00%Moog, Inc. 0.38%
Hut 8 Corp. 0.37%
Viasat, Inc. 0.35%
BrightSpring Health Services, Inc. 0.35%
Cytokinetics, Inc. 0.35%
MaxLinear, Inc. 0.34%
Argan, Inc. 0.34%
UMB Financial Corp. 0.33%

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and May 31, 2026.

BITO and IWM on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
BITO
ProShares Bitcoin ETF
IWM
iShares Russell 2000 ETF
Where it sitsCore index fundCore index fund
IssuerProSharesiShares
What it isBitcoinRussell 2000
Total return, 1 year−34.8%+21.2%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500−52.3 pts+3.7 pts
Expense ratio0.95%0.19%
Holdings12014

BITO in plain words

BITO is a digital asset fund tracking the Bitcoin. Over the year to Sep 11, 2026 it returned −34.8% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.95% a year. It sat 40.3% below its high of Oct 6, 2025 on Sep 11, 2026.

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.

Questions people ask

Which returned more over the last year, BITO or IWM?
In the year to Sep 12, 2026, with distributions reinvested, BITO returned −34.8% and IWM returned +21.2%, so IWM returned more. One year is one year; the longer windows are in the table.
Which is cheaper, BITO or IWM?
BITO charges 0.95% a year and IWM charges 0.19%, so IWM 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.

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

A comparison is not a recommendation. Standards and sources