SPSM vs VO: Holdings Overlap
SPSMState Street® SPDR® Portfolio S&P 600™ Small Cap ETF
State Street (SPDR) · 604 holdings · $17.3B · as of 2026-08-06
Vanguard · 289 holdings · $109.2B · as of 2026-03-31
Holdings snapshots are 128 days apart (SPSM: 2026-08-06, VO: 2026-03-31). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are SPSM and VO?
State Street® SPDR® Portfolio S&P 600™ Small Cap ETF (SPSM, by State Street (SPDR)) holds 604 positions; Vanguard Mid-cap Index Fund (VO, by Vanguard) holds 289. They have 0 holdings in common, and by portfolio weight the two funds are 0.0% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 0SPSM holds 604 · VO holds 289
- Weight in Shared Holdings
- SPSM 0%·VO 0%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in SPSM
604 of 604 positions (99.8% of the fund) are not held by VO. Showing the top 30 by weight.
Only in VO
289 of 289 positions (99.6% of the fund) are not held by SPSM. Showing the top 30 by weight.
Sector Breakdown
| Sector | SPSM | VO |
|---|---|---|
| Financials | 19.0% | 13.8% |
| Industrials | 17.4% | 18.4% |
| Information Technology | 12.8% | 14.2% |
| Consumer Discretionary | 13.9% | 9.3% |
| Health Care | 10.6% | 8.3% |
| Other Sectors | 25.1% | 35.7% |
| Unclassified | 0.9% | 0.0% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (1% of SPSM, 0% of VO).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| SPSM | +2.4% | +24.5% | +36.5% | +14.6% | +7.7% | +10.9% | 1.36% |
| VO | +2.6% | +14.8% | +18.0% | +15.7% | +8.0% | +11.6% | 1.29% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in SPSM vs VO →
Shared Holdings(0)
These two funds have no holdings in common.
Frequently Asked Questions
How much do SPSM and VO overlap?
SPSM and VO overlap by 0.0% of portfolio weight. They share 0 holdings (SPSM holds 604 positions and VO holds 289), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPSM and VO?
The two portfolios are 0.0% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What does SPSM own that VO doesn't?
604 positions (99.8% of SPSM) are unique to SPSM, led by VSAT, CORT and GKOS. In the other direction, 289 positions (99.6% of VO) are unique to VO.