VGSLX vs VOO: 2% overlap
Vanguard Real Estate Index Admiral and Vanguard S&P 500 ETF share 2.0% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
You would hold two tickers and get the diversification of 2.0. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
VGSLX and VOO hold 32 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VGSLX | in VOO | Δ |
|---|---|---|---|
| WELL | 8.4% | 0.2% | 8.2% |
| CASH | 0.6% | 0.2% | 0.4% |
| PLD | 6.7% | 0.2% | 6.5% |
| EQIX | 5.5% | 0.2% | 5.3% |
| AMT | 4.0% | 0.1% | 3.9% |
| SPG | 3.9% | 0.1% | 3.7% |
| DLR | 3.3% | 0.1% | 3.2% |
| O | 3.0% | 0.1% | 3.0% |
| PSA | 2.7% | 0.1% | 2.6% |
| VTR | 2.2% | 0.1% | 2.2% |
Where VGSLX and VOO differ
Sector weights as a share of each fund, ordered by the size of the gap rather than the size of the sector — two funds that overlap heavily still usually diverge somewhere.
| Sector | VGSLX | VOO | Δ |
|---|---|---|---|
| Real Estate | 84.0% | 1.8% | +82.2pp |
| Information Technology | 0.0% | 38.0% | −38.0pp |
| Unclassified | 14.7% | 0.0% | +14.7pp |
| Financials | 0.3% | 11.6% | −11.3pp |
| Communication Services | 0.0% | 9.7% | −9.7pp |
| Consumer Discretionary | 0.2% | 9.3% | −9.1pp |
| Industrials | 0.0% | 8.9% | −8.9pp |
| Health Care | 0.0% | 8.9% | −8.9pp |
Δ is VGSLX minus VOO, in percentage points. Sector data is not published by every issuer, so “Unclassified” is a real category rather than a gap in the table.
What each fund holds alone
37.0% of VGSLX by weight, held in no part of VOO.
98.0% of VOO by weight, held in no part of VGSLX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VGSLX | VOO | |
|---|---|---|
| Top 10 holdings | 54.1% | 36.4% |
| Positions held | 145 | 505 |
| Cost per $10,000 held, per year | $13 | $3 |
Cost is the expense ratio applied to $10,000; it excludes any brokerage commission, bid-ask spread or tax consequence. Figures are facts about the funds, not a suggestion about which to hold.
Frequently asked
How much do VGSLX and VOO overlap?
VGSLX and VOO overlap 2.0% by portfolio weight — largely distinct portfolios. They share 32 holdings. The figure comes from current issuer holdings files (VGSLX as of 2026-06-30, VOO as of 2026-06-30).
How is the overlap between VGSLX and VOO calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VGSLX holds a stock at 6% and VOO holds the same stock at 4%, 4% counts as shared. The result is bounded between 0% and 100%, and it is computed after looking through any fund-of-funds to the underlying holdings.
Is it redundant to hold both VGSLX and VOO?
That depends on your goals — we state facts, not advice. At 2.0% overlap, each fund still contributes meaningfully distinct exposure.
What does VGSLX own that VOO doesn't?
VGSLX holds 145 positions and VOO holds 505; 113 of VGSLX's positions don't appear in VOO at all, and they are 37.0% of VGSLX by weight.
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Related comparisons
Sources: issuer holdings files, VGSLX as of 2026-06-30, VOO as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.