IMCB vs VO: Differences, Returns & Fees
IMCB and VO hold 68% of their weight in the same names, and IMCB returned +19.2% over the year. Net assets: $1.7bn on Oct 20, 2026 for iShares Morningstar Mid-Cap ETF, and $103.4bn on Sep 30, 2026 for Vanguard Morningstar Mid-Cap ETF.
VO costs 0.01 points a year less; their one-year returns differ by 6.8 points; VO is far larger, $103.4bn against $1.7bn.
| IMCB | VO | |
|---|---|---|
| Expense ratio | 0.04% | 0.03% |
| Net assets, as of Sep 30, 2026 | $1.7bn | $103.4bn |
| Total return, 1 year | +19.2% | +12.4% |
| What it tracks | Morningstar US Mid Cap Index | Morningstar US Mid Cap Index (formerly CRSP US Mid Cap Index) |
| Holdings in common | 68% | |
| Top ten holdings, share of the fund | 7.9% | 9.7% |
| Below its high | 3.3%, high on Aug 14, 2026 | 3.8%, high on Aug 14, 2026 |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 19, 2026.
IMCB and VO are built for the same job. How do they differ in cost, holdings and results?
- What each follows. IMCB follows Morningstar US Mid Cap Index and VO follows Morningstar US Mid Cap Index (formerly CRSP US Mid Cap Index).
- One-year total return. Over 1 year to Oct 20, 2026 IMCB returned +19.2% and VO +12.4% with distributions reinvested, a gap of 6.8 points.
- Size. IMCB has $1.7bn in net assets and VO $103.4bn (net assets, as of Sep 30, 2026); VO is 60.8 times larger.
Data as of Oct 20, 2026. The differences are picked by a fixed rule, in a fixed order; the PDF prints it. Page 2 has the returns, overlap, risks and sources.
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What they hold in common
By the books each fund has filed, IMCB and VO hold 68% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 19, 2026.
half
68% in common
On the same fields
IMCB and VO on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.
About IMCB
IMCB tracks an index. Over the year to Oct 20, 2026 it returned +19.2% with distributions reinvested. The prospectus expense ratio is 0.04% a year. By its holdings published by its issuer for Oct 19, 2026, 86% of the fund by weight is stocks the S&P 500 also holds, across 394 positions, with the top ten at 7.9%. It sat 3.3% below its high of Aug 14, 2026 on Oct 20, 2026.
About VO
VO tracks an index of Mid-Cap. Over the year to Oct 20, 2026 it returned +12.4% 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 3.8% below its high of Aug 14, 2026 on Oct 20, 2026.
Questions people ask
- Which returned more over the last year, IMCB or VO?
- In the year to Oct 20, 2026, with distributions reinvested, IMCB returned +19.2% and VO +12.4%.
- Which is cheaper, IMCB or VO?
- VO is cheaper, by 0.01 percentage points a year. That is about $1 on $10,000 held for a year. Fees come from each fund's prospectus.
ETFIQ links to the documents behind every figure; a link is not an endorsement. 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, IMCB against VO, data as of Oct 20, 2026. https://etfiq.com/compare/any/imcb-vs-vo
ETFIQ. (Oct 20, 2026). IMCB against VO. Retrieved from https://etfiq.com/compare/any/imcb-vs-vo
[IMCB against VO (ETFIQ, Oct 20, 2026)](https://etfiq.com/compare/any/imcb-vs-vo)
Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.