VOvsIWRETF Comparison
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Vanguard Mid-Cap ETF (VO) and iShares Russell Mid-Cap ETF (IWR) belong to the same industry segment: US Mid Cap. Both ETFs have the same top 3 sector exposures: Industrials, Information Technology and Financials. VO is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.18% for IWR. VO is up 7.48% year-to-date (YTD) with +$3.04B in YTD flows. IWR performs better with 9.4% YTD performance, and +$2.27B in YTD flows. Run a side-by-side ETF comparison of VO and IWR below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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VO vs IWR performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 05/05/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | VO IWR | +6.60%+6.38% | +6.10%+6.17% | +7.48%+9.40% | +21.14%+24.11% | +57.44%+59.26% | +45.72%+45.62% |
| Flows | VO IWR | +$487M+$570M | +$2.43B+$2.61B | +$3.04B+$2.27B | +$8.66B+$4.62B | +$20.85B+$10.02B | +$29.64B+$11.82B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | VO IWR | +15.28%+16.67% | +12.72%+13.94% | +14.77%+15.94% | +17.61%+18.29% |
| Max drawdown | VO IWR | -8.12%-8.16% | -8.12%-8.16% | -18.93%-21.08% | -27.54%-26.20% |
| Max drawdown duration | VO IWR | 49d49d | 49d49d | 211d239d | 972d854d |
Trading data
VO | IWR | |
Last sale 5/6/2026 at 2:54 PM | $78.13 | $106.04 |
| Previous close 05/05/2026 | $77.70 | $105.06 |
| Consolidated volume 05/05/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of April 30, 2026
1-year trailing difference
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VO | IWR | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 5/6/2026 at 2:54 PM
Live
Closed
VO | IWR | |
|---|---|---|
| Last price | $78.13 | $106.04 |
| 1D performance | +0.55% | +0.93% |
| AuM | $100.30 B | $53.02 B |
| E/R | 0.03% | 0.18% |
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Exposure
Countries
VO
USA
92.71%
Other
7.29%
IWR
USA
93.69%
Other
6.31%
Sectors
VO
Industrials
16.8%
Information Techn.
14.58%
Financials
12.17%
Consumer Discreti.
10.4%
Utilities
8.82%
Energy
8.76%
Other
28.46%
IWR
Industrials
16.54%
Information Techn.
13.04%
Financials
12.07%
Consumer Discreti.
10.57%
Health Care
8.39%
Energy
7.34%
Other
32.04%
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Diversification
VO
Total weight of top 15 holdings out of 15
12.84%
IWR
Total weight of top 15 holdings out of 15
9.59%
Top 15 holdings
Data as of March 31, 2026
VO
VERTIV HOLDINGS
1.02%
HOWMET AEROSPACE INC
1.00%
WESTERN DIGITAL
1.00%
CONSTELLATION ENERGY CORP
0.93%
SEAGATE TECHNOLOGY HOLDINGS PLC
0.93%
QUANTA SERVICES
0.89%
SCHLUMBERGER
0.84%
CUMMINS
0.81%
VALERO ENERGY
0.80%
PHILLIPS 66
0.79%
MARATHON PETROLEUM
0.78%
MOTOROLA SOLUTIONS
0.78%
CRH PLC
0.76%
ROSS STORES
0.76%
GENERAL MOTORS
0.73%
IWR
CORNING
0.84%
VERTIV HOLDINGS
0.76%
HOWMET AEROSPACE INC
0.73%
WESTERN DIGITAL
0.73%
US80004C2008
0.72%
BANK OF NEW YORK MELLON
0.65%
QUANTA SERVICES
0.64%
VALERO ENERGY
0.60%
CUMMINS
0.59%
MARATHON PETROLEUM
0.58%
PHILLIPS 66
0.58%
ROYAL CARIBBEAN GROUP
0.55%
HILTON INC
0.55%
ROSS STORES
0.55%
KINDER MORGAN
0.52%
Frequently asked questions about VO and IWR
How have the VO and IWR ETFs performed in 2026?
As of May 5, 2026, VO is up 7.48% year-to-date (YTD), while IWR has returned 9.4%. That puts IWR better performer ahead so far this year.
Which ETF is attracting more investor money: VO or IWR?
Year-to-date, the VO ETF saw +$3.04B in flows, compared to +$2.27B for IWR.
Which ETF is more volatile: VO or IWR?
Over the past year, VO had a volatility of 12.72%, while IWR experienced 13.94%.
Which ETF is bigger: VO or IWR?
As of May 5, 2026, VO holds $100.30 B in assets under management (AUM), while IWR manages $53.02 B.
What sectors do the VO and IWR ETFs invest in?
VO leans toward sectors like Industrials, Information Technology and Financials. Meanwhile, IWR focuses on Industrials, Information Technology and Financials.
What are the top holdings of the VO ETF and IWR ETF?
VO top holdings include VERTIV HOLDINGS, HOWMET AEROSPACE INC and WESTERN DIGITAL. IWR holds in its top three: CORNING, VERTIV HOLDINGS and HOWMET AEROSPACE INC.
Which ETF is more diversified: VO or IWR?
VO holds 289 securities with 12.84% of its assets in the top 15. IWR has 806 securities and a top 15 weight of 9.59%.
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