Data as of Oct 28, 2026.
IWF vs VO: Differences, Returns & Fees
Over the year to Oct 28, 2026, IWF returned +0.9% to VO's +12.8%; 9% of their weight is in the same names.
askIQ about this page
askIQ about IWF and VO
Net assets: $124.7bn on Oct 27, 2026 for iShares Russell 1000 Growth ETF, and $103.4bn on Sep 30, 2026 for Vanguard Morningstar Mid-Cap ETF.
Pair scorecard
VO costs 0.15 points a year less; their one-year returns differ by 11.9 points; IWF is 1.2 times larger.
| Measure | IWF | VO |
|---|---|---|
| Return | ||
| Total return, 1 year | +0.9% | +12.8% |
| Drawdown | ||
| Below its high | 4.8%, high on Oct 6, 2026 | 3.1%, high on Aug 14, 2026 |
| Benchmark | ||
| What it tracks | Russell 1000 Growth Index | Morningstar US Mid Cap Index (formerly CRSP US Mid Cap Index) |
| Cost and size | ||
| Expense ratio | 0.18% | 0.03% |
| Net assets, as of Sep 30, 2026 | $127.7bn | $103.4bn |
| Holdings | ||
| Holdings in common | 9% | |
| Top ten holdings, share of the fund | 57.5% | 9.7% |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method
What they share
By the books each fund has filed, IWF and VO hold 9% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.
half
9% in common
Only in one fund ↓
Side by side
IWF and VO on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
IWF and VO do different jobs. What does each one do in a portfolio?
- What each follows. IWF follows Russell 1000 Growth Index and VO follows Morningstar US Mid Cap Index (formerly CRSP US Mid Cap Index).
- Holdings in common. 9% of the weight is in the same securities (holdings dated Oct 27, 2026 and Sep 30, 2026).
- One-year total return. Over 1 year to Oct 28, 2026 IWF returned +0.9% and VO +12.8% with distributions reinvested, a gap of 11.9 points.
Data as of Oct 28, 2026.
The two-page PDF for this pair is coming. Save the comparison to follow its changes. Free. It needs an email sign-in, once.
IWF
IWF tracks the Russell 1000 growth. Over the year to Oct 28, 2026 it returned +0.9% with distributions reinvested, against +1.1% for its benchmark, the Russell 1000 Growth Index. The prospectus expense ratio is 0.18% a year. By its holdings published by its issuer for Oct 27, 2026, 94% of the fund by weight is stocks the S&P 500 also holds, across 374 positions, with the top ten at 57.5%. It sat 4.8% below its high of Oct 6, 2026 on Oct 28, 2026.
VO
VO tracks an index of Mid-Cap. Over the year to Oct 28, 2026 it returned +12.8% with distributions reinvested. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer as of Sep 30, 2026, 91% of the fund by weight is stocks the S&P 500 also holds, across 273 positions, with the top ten at 9.7%. It sat 3.1% below its high of Aug 14, 2026 on Oct 28, 2026.
Questions people ask
- Which returned more over the last year, IWF or VO?
- In the year to Oct 28, 2026, with distributions reinvested, IWF returned +0.9% and VO +12.8%.
- Which is cheaper, IWF or VO?
- VO is cheaper, by 0.15 percentage points a year. That is about $15 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
Cite this pageCitation, APA and Markdown
ETFIQ, IWF against VO, data as of Oct 28, 2026. https://etfiq.com/compare/any/iwf-vs-vo
ETFIQ. (Oct 28, 2026). IWF against VO. Retrieved from https://etfiq.com/compare/any/iwf-vs-vo
[IWF against VO (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/iwf-vs-vo)
Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.