VOvsIWRETF Comparison
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Vanguard Morningstar 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: Finance, Technology and Industrials. VO is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.18% for IWR. VO is up 13.47% year-to-date (YTD) with +$4.98B in YTD flows. IWR performs better with 15.57% YTD performance, and +$4.27B 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 10/27/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | VO IWR | +3.09%+2.72% | +0.90%+0.62% | +13.47%+15.57% | +11.57%+14.44% | +74.51%+76.97% | +41.43%+44.43% |
| Flows | VO IWR | -$54M+$1.05B | +$573M+$1.43B | +$4.98B+$4.27B | +$6.88B+$5.62B | +$21.20B+$11.77B | +$28.79B+$13.61B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | VO IWR | +10.61%+11.37% | +12.48%+13.47% | +14.54%+15.73% | +17.52%+18.23% |
| Max drawdown | VO IWR | -6.83%-6.83% | -8.12%-8.16% | -18.93%-21.08% | -27.54%-26.20% |
| Max drawdown duration | VO IWR | 72d72d | 49d49d | 211d239d | 972d854d |
Trading data
VO | IWR | |
Last sale 10/28/2026 at 1:45 PM | $81.33 | $110.20 |
| Previous close 10/27/2026 | $81.45 | $110.33 |
| Consolidated volume 10/27/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 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 10/28/2026 at 1:45 PM
Live
Closed
VO | IWR | |
|---|---|---|
| Last price | $81.33 | $110.20 |
| 1D performance | -0.15% | -0.12% |
| AuM | $107.19 B | $57.76 B |
| E/R | 0.03% | 0.18% |
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Exposure
Countries
VO
USA
95.4%
Other
4.6%
IWR
USA
96.24%
Other
3.76%
Sectors
VO
Finance
20.58%
Technology
16.83%
Industrials
16.07%
Energy
8.72%
Healthcare
8.54%
Utilities
7.66%
Other
21.61%
IWR
Finance
21.61%
Technology
16.34%
Industrials
13.72%
Healthcare
11.84%
Other
36.48%
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Diversification
VO
Total weight of top 15 holdings out of 15
13.12%
IWR
Total weight of top 15 holdings out of 15
8.43%
Top 15 holdings
Data as of August 31, 2026
VO
Marathon Petroleum Corp.
1.04%
Valero Energy Corp.
1.01%
Vertiv Holdings Co.
0.95%
Phillips 66
0.94%
Howmet Aerospace, Inc.
0.93%
Cloudflare, Inc.
0.93%
Seagate Technology Holdings Plc
0.88%
Quanta Services, Inc.
0.87%
SLB Ltd.
0.86%
Constellation Energy Corp.
0.85%
DoorDash, Inc.
0.82%
Robinhood Markets, Inc.
0.79%
Motorola Solutions, Inc.
0.77%
Datadog, Inc.
0.75%
Cummins, Inc.
0.74%
IWR
Snowflake, Inc.
0.80%
Marathon Petroleum Corp.
0.79%
Phillips 66
0.71%
Cloudflare, Inc.
0.69%
Robinhood Markets, Inc.
0.58%
Datadog, Inc.
0.56%
Hewlett Packard Enterprise Co.
0.50%
Warner Bros. Discovery, Inc.
0.49%
Simon Property Group, Inc.
0.49%
Royal Caribbean Group
0.49%
Digital Realty Trust, Inc.
0.48%
The Allstate Corp.
0.47%
Lumentum Holdings, Inc.
0.47%
United Rentals, Inc.
0.47%
Baker Hughes Co.
0.45%
Frequently asked questions about VO and IWR
How have the VO and IWR ETFs performed in 2026?
As of October 27, 2026, VO is up 13.47% year-to-date (YTD), while IWR has returned 15.57%. 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 +$4.98B in flows, compared to +$4.27B for IWR.
Which ETF is more volatile: VO or IWR?
Over the past year, VO had a volatility of 12.48%, while IWR experienced 13.47%.
Which ETF is bigger: VO or IWR?
As of October 27, 2026, VO holds $107.19 B in assets under management (AUM), while IWR manages $57.76 B.
What sectors do the VO and IWR ETFs invest in?
VO leans toward sectors like Finance, Technology and Industrials. Meanwhile, IWR focuses on Finance, Technology and Industrials.
What are the top holdings of the VO ETF and IWR ETF?
VO top holdings include Marathon Petroleum Corp., Valero Energy Corp. and Vertiv Holdings Co.. IWR holds in its top three: Snowflake, Inc., Marathon Petroleum Corp. and Phillips 66.
Which ETF is more diversified: VO or IWR?
VO holds 280 securities with 13.12% of its assets in the top 15. IWR has 818 securities and a top 15 weight of 8.43%.
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