SPTM vs VO: Differences, Returns & Fees
SPTM and VO hold 14% of their weight in the same names, and SPTM returned +15.7% over the year. Net assets: $14.1bn on Oct 20, 2026 for State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF, and $103.4bn on Sep 30, 2026 for Vanguard Morningstar Mid-Cap ETF.
Both cost 0.03% a year; their one-year returns differ by 3.3 points; VO is 7.4 times larger.
Points (pts) are percentage points.
| SPTM | VO | |
|---|---|---|
| Expense ratio | 0.03% | 0.03% |
| Net assets, as of Sep 30, 2026 | $14.0bn | $103.4bn |
| Total return, 1 year | +15.7% | +12.4% |
| What it tracks | S&P Composite 1500 Index | Morningstar US Mid Cap Index (formerly CRSP US Mid Cap Index) |
| Holdings in common | 14% | |
| Top ten holdings, share of the fund | 35.8% | 9.7% |
| Below its high | 3.8%, high on Aug 14, 2026 | |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 19, 2026.
SPTM and VO are built for the same job. How do they differ in cost, holdings and results?
- What each follows. SPTM follows S&P Composite 1500 Index and VO follows Morningstar US Mid Cap Index (formerly CRSP US Mid Cap Index).
- Holdings in common. 14% of the weight is in the same securities (holdings dated Oct 19, 2026 and Sep 30, 2026).
- One-year total return. Over 1 year to Oct 20, 2026 SPTM returned +15.7% and VO +12.4% with distributions reinvested, a gap of 3.3 points.
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, SPTM and VO hold 14% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 19, 2026.
half
14% in common
On the same fields
SPTM and VO on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.
About SPTM
SPTM tracks an index. Over the year to Oct 20, 2026 it returned +15.7% with distributions reinvested, against +15.8% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 19, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1,512 positions, with the top ten at 35.8%.
About VO
VO tracks an index of Mid-Cap. Over the year to Oct 20, 2026 it returned +12.4% with distributions reinvested. 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
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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, SPTM against VO, data as of Oct 20, 2026. https://etfiq.com/compare/any/sptm-vs-vo
ETFIQ. (Oct 20, 2026). SPTM against VO. Retrieved from https://etfiq.com/compare/any/sptm-vs-vo
[SPTM against VO (ETFIQ, Oct 20, 2026)](https://etfiq.com/compare/any/sptm-vs-vo)
Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.