Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IWM vs VOOG: how they differ
IWM and VOOG hold 0% of their weight in the same names, and IWM returned more over the year.
iShares Russell 2000 ETF and Vanguard S&P 500 Growth Index Fund.
What they hold in common
By the books each fund has filed, IWM and VOOG hold 0% of their money in the same securities at the same weight.
| Only in IWM | Only in VOOG |
|---|---|
| Moog, Inc. 0.38% | NVIDIA Corp 14.29% |
| Hut 8 Corp. 0.37% | Microsoft Corp 9.31% |
| Viasat, Inc. 0.35% | Apple Inc 6.38% |
| BrightSpring Health Services, Inc. 0.35% | Alphabet Inc 6.17% |
| Cytokinetics, Inc. 0.35% | Broadcom Inc 5.90% |
| MaxLinear, Inc. 0.34% | Alphabet Inc 4.90% |
| Argan, Inc. 0.34% | Amazon.com Inc 3.90% |
| UMB Financial Corp. 0.33% | Meta Platforms Inc 3.85% |
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.
| IWM iShares Russell 2000 ETF | VOOG Vanguard S&P 500 Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell 2000 | S&P 500 Growth |
| Total return, 1 year | +21.2% | +17.8% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +3.7 pts | +0.3 pts |
| Expense ratio | 0.19% | 0.05% |
| Already in the S&P 500 | 0.0% | 100.0% |
| Holdings | 2014 | 146 |
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.
VOOG in plain words
VOOG is an index equity fund tracking the S&P 500 Growth. Over the year to Sep 11, 2026 it returned +17.8% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.05% a year. By its holdings filed for May 31, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 146 positions, with the top ten at 60.2%.
Questions people ask
- Which returned more over the last year, IWM or VOOG?
- In the year to Sep 12, 2026, with distributions reinvested, IWM returned +21.2% and VOOG returned +17.8%, so IWM returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWM or VOOG?
- IWM charges 0.19% a year and VOOG charges 0.05%, so VOOG is cheaper. Fees come from each fund's prospectus.
- How much do IWM and VOOG overlap with the S&P 500?
- By their latest filed holdings, 0% of IWM and 100% of VOOG by weight is stocks the S&P 500 already holds. Between the two funds, 0% of their books are the same securities at the same weight.
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.
Cite this page. ETFIQ, IWM against VOOG, data as of Sep 12, 2026. https://etfiq.com/compare/any/IWM-VOOG Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources