VOvsIMCBETF Comparison
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Vanguard Mid-Cap ETF (VO) and iShares Morningstar Mid-Cap ETF (IMCB) belong to the same industry segment: US Mid Cap. Both ETFs have the same top 3 sector exposures: Finance, Industrials and Technology. VO is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.04% for IMCB. VO is up 12.46% year-to-date (YTD) with +$4.41B in YTD flows. IMCB performs better with 18.36% YTD performance, and +$10M in YTD flows. Run a side-by-side ETF comparison of VO and IMCB 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 IMCB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 07/27/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | VO IMCB | +0.63%+0.96% | +6.16%+8.91% | +12.46%+18.36% | +13.97%+20.39% | +50.61%+57.06% | +46.63%+56.55% |
| Flows | VO IMCB | -$730M+$14M | +$1.61B-$15M | +$4.41B+$10M | +$7.77B+$248M | +$21.27B+$398M | +$29.97B+$309M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | VO IMCB | +11.83%+12.58% | +12.61%+13.12% | +14.73%+15.24% | +17.56%+17.69% |
| Max drawdown | VO IMCB | -3.19%-3.38% | -8.12%-8.06% | -18.93%-19.88% | -27.54%-25.13% |
| Max drawdown duration | VO IMCB | 8d8d | 49d49d | 211d238d | 972d835d |
Trading data
VO | IMCB | |
Last sale 7/28/2026 at 1:30 PM | $81.35 | $97.84 |
| Previous close 07/27/2026 | $81.01 | $97.33 |
| Consolidated volume 07/27/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of June 30, 2026
1-year trailing difference
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VO | IMCB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 7/28/2026 at 1:30 PM
Live
Closed
VO | IMCB | |
|---|---|---|
| Last price | $81.35 | $97.84 |
| 1D performance | +0.42% | +0.53% |
| AuM | $105.98 B | $1.66 B |
| E/R | 0.03% | 0.04% |
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Exposure
Countries
VO
USA
95.94%
Other
4.06%
IMCB
USA
95.44%
Other
4.56%
Sectors
VO
Finance
19.55%
Industrials
18.03%
Technology
17.76%
Utilities
8.34%
Healthcare
7.78%
Energy
7.17%
Other
21.38%
IMCB
Finance
18.91%
Industrials
16.45%
Technology
16.08%
Healthcare
8.73%
Non-Energy Materi.
7.38%
Other
32.45%
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Diversification
VO
Total weight of top 15 holdings out of 15
13.22%
IMCB
Total weight of top 15 holdings out of 15
9.62%
Top 15 holdings
Data as of June 30, 2026
VO
Vertiv Holdings Co.
1.22%
Western Digital Corp.
1.06%
Seagate Technology Holdings Plc
1.04%
Quanta Services, Inc.
1.04%
Howmet Aerospace, Inc.
1.04%
Cummins, Inc.
0.95%
Datadog, Inc.
0.83%
Bloom Energy Corp.
0.79%
Constellation Energy Corp.
0.78%
Robinhood Markets, Inc.
0.76%
Cloudflare, Inc.
0.76%
Valero Energy Corp.
0.75%
Coherent Corp.
0.74%
Royal Caribbean Group
0.74%
Teradyne, Inc.
0.73%
IMCB
Dell Technologies, Inc.
0.85%
The PNC Financial Services Group, Inc.
0.69%
Cummins, Inc.
0.68%
The Bank of New York Mellon Corp.
0.66%
Fortinet, Inc.
0.66%
U.S. Bancorp
0.65%
Freeport-McMoRan, Inc.
0.63%
The Williams Cos., Inc.
0.63%
Automatic Data Processing, Inc.
0.63%
Johnson Controls International Plc
0.62%
CSX Corp.
0.61%
Snowflake, Inc.
0.60%
3M Co.
0.59%
Datadog, Inc.
0.56%
Elevance Health, Inc.
0.56%
Frequently asked questions about VO and IMCB
How have the VO and IMCB ETFs performed in 2026?
As of July 27, 2026, VO is up 12.46% year-to-date (YTD), while IMCB has returned 18.36%. That puts IMCB better performer ahead so far this year.
Which ETF is attracting more investor money: VO or IMCB?
Year-to-date, the VO ETF saw +$4.41B in flows, compared to +$10M for IMCB.
Which ETF is more volatile: VO or IMCB?
Over the past year, VO had a volatility of 12.61%, while IMCB experienced 13.12%.
Which ETF is bigger: VO or IMCB?
As of July 27, 2026, VO holds $105.98 B in assets under management (AUM), while IMCB manages $1.66 B.
What sectors do the VO and IMCB ETFs invest in?
VO leans toward sectors like Finance, Industrials and Technology. Meanwhile, IMCB focuses on Finance, Industrials and Technology.
What are the top holdings of the VO ETF and IMCB ETF?
VO top holdings include Vertiv Holdings Co., Western Digital Corp. and Seagate Technology Holdings Plc. IMCB holds in its top three: Dell Technologies, Inc., The PNC Financial Services Group, Inc. and Cummins, Inc..
Which ETF is more diversified: VO or IMCB?
VO holds 282 securities with 13.22% of its assets in the top 15. IMCB has 396 securities and a top 15 weight of 9.62%.
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