VOvsIMCBETF Comparison
VS
Vanguard Morningstar 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 11.61% year-to-date (YTD) with +$4.59B in YTD flows. IMCB performs better with 17.42% YTD performance, and +$45M 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 09/10/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | VO IMCB | -2.83%-3.23% | +3.93%+5.19% | +11.61%+17.42% | +12.57%+18.82% | +55.06%+61.88% | +41.87%+52.29% |
| Flows | VO IMCB | +$159M+$30M | +$270M+$46M | +$4.59B+$45M | +$7.47B+$255M | +$21.08B+$435M | +$29.35B+$361M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | VO IMCB | +10.40%+10.74% | +12.59%+13.05% | +14.72%+15.21% | +17.58%+17.70% |
| Max drawdown | VO IMCB | -4.83%-4.63% | -8.12%-8.06% | -18.93%-19.88% | -27.54%-25.13% |
| Max drawdown duration | VO IMCB | 25d25d | 49d49d | 211d238d | 972d835d |
Trading data
VO | IMCB | |
Last sale 9/11/2026 at 1:30 PM | $81.03 | $97.42 |
| Previous close 09/10/2026 | $80.40 | $96.58 |
| Consolidated volume 09/10/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 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 9/11/2026 at 1:30 PM
Live
Closed
VO | IMCB | |
|---|---|---|
| Last price | $81.03 | $97.42 |
| 1D performance | +0.78% | +0.87% |
| AuM | $105.37 B | $1.68 B |
| E/R | 0.03% | 0.04% |
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Exposure
Countries
VO
USA
95.09%
Other
4.91%
IMCB
USA
95.9%
Other
4.1%
Sectors
VO
Finance
20.62%
Industrials
16.97%
Technology
16.77%
Utilities
8.1%
Healthcare
8.01%
Energy
7.92%
Other
21.61%
IMCB
Finance
19.92%
Industrials
15.72%
Technology
14.75%
Healthcare
8.98%
Non-Energy Materi.
7.48%
Energy
7.29%
Other
25.87%
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Diversification
VO
Total weight of top 15 holdings out of 15
12.98%
IMCB
Total weight of top 15 holdings out of 15
9.99%
Top 15 holdings
Data as of July 31, 2026
VO
Howmet Aerospace, Inc.
1.08%
Quanta Services, Inc.
0.96%
Seagate Technology Holdings Plc
0.92%
Western Digital Corp.
0.90%
Valero Energy Corp.
0.89%
Vertiv Holdings Co.
0.89%
Marathon Petroleum Corp.
0.89%
Cloudflare, Inc.
0.85%
Datadog, Inc.
0.85%
Cummins, Inc.
0.84%
Constellation Energy Corp.
0.82%
Phillips 66
0.81%
Ross Stores, Inc.
0.78%
General Motors Co.
0.77%
Royal Caribbean Group
0.74%
IMCB
Dell Technologies, Inc.
0.80%
Automatic Data Processing, Inc.
0.73%
The Bank of New York Mellon Corp.
0.71%
Snowflake, Inc.
0.69%
The PNC Financial Services Group, Inc.
0.69%
U.S. Bancorp
0.68%
Fortinet, Inc.
0.66%
CSX Corp.
0.65%
Valero Energy Corp.
0.64%
3M Co.
0.63%
Marathon Petroleum Corp.
0.63%
Freeport-McMoRan, Inc.
0.63%
Marsh & McLennan Cos., Inc.
0.62%
Cloudflare, Inc.
0.62%
Johnson Controls International Plc
0.61%
Frequently asked questions about VO and IMCB
How have the VO and IMCB ETFs performed in 2026?
As of September 10, 2026, VO is up 11.61% year-to-date (YTD), while IMCB has returned 17.42%. 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 +$4.59B in flows, compared to +$45M for IMCB.
Which ETF is more volatile: VO or IMCB?
Over the past year, VO had a volatility of 12.59%, while IMCB experienced 13.05%.
Which ETF is bigger: VO or IMCB?
As of September 10, 2026, VO holds $105.37 B in assets under management (AUM), while IMCB manages $1.68 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 Howmet Aerospace, Inc., Quanta Services, Inc. and Seagate Technology Holdings Plc. IMCB holds in its top three: Dell Technologies, Inc., Automatic Data Processing, Inc. and The Bank of New York Mellon Corp..
Which ETF is more diversified: VO or IMCB?
VO holds 282 securities with 12.98% of its assets in the top 15. IMCB has 396 securities and a top 15 weight of 9.99%.
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