SPY vs VIOO: Holdings Overlap
SPYState Street® SPDR® S&P 500® ETF Trust
State Street (SPDR) · 504 holdings · $812.0B · as of 2026-08-06
VIOOVanguard S&P Small-cap 600 Index Fund
Vanguard · 603 holdings · $4.4B · as of 2026-05-31
Holdings snapshots are 67 days apart (SPY: 2026-08-06, VIOO: 2026-05-31). 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 SPY and VIOO?
State Street® SPDR® S&P 500® ETF Trust (SPY, by State Street (SPDR)) holds 504 positions; Vanguard S&P Small-cap 600 Index Fund (VIOO, by Vanguard) holds 603. 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
- 0SPY holds 504 · VIOO holds 603
- Weight in Shared Holdings
- SPY 0%·VIOO 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 SPY
504 of 504 positions (99.9% of the fund) are not held by VIOO. Showing the top 30 by weight.
Sector Breakdown
| Sector | SPY | VIOO |
|---|---|---|
| Information Technology | 37.6% | 15.9% |
| Financials | 12.3% | 17.6% |
| Industrials | 8.8% | 17.2% |
| Consumer Discretionary | 9.3% | 12.9% |
| Health Care | 8.9% | 11.0% |
| Other Sectors | 23.1% | 25.2% |
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.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| SPY | +3.4% | +14.0% | +23.7% | +21.2% | +13.3% | +15.3% | 0.97% |
| VIOO | +2.4% | +24.4% | +36.3% | +14.6% | +7.7% | +10.9% | 1.09% |
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 SPY vs VIOO →
Shared Holdings(0)
These two funds have no holdings in common.
Frequently Asked Questions
How much do SPY and VIOO overlap?
SPY and VIOO overlap by 0.0% of portfolio weight. They share 0 holdings (SPY holds 504 positions and VIOO holds 603), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPY and VIOO?
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 SPY own that VIOO doesn't?
504 positions (99.9% of SPY) are unique to SPY, led by NVDA, AAPL and MSFT. In the other direction, 603 positions (99.8% of VIOO) are unique to VIOO.