VTSAX vs VXF: 12% overlap
Vanguard Total Stock Market Index Admiral and Vanguard Extended Market ETF share 12.1% 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 1.9. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
VTSAX and VXF hold 2,964 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VTSAX | in VXF | Δ |
|---|---|---|---|
| CASH | 0.6% | 3.8% | 3.1% |
| SPCX | 0.1% | 1.1% | 1.0% |
| SNOW | 0.1% | 1.0% | 0.9% |
| BE | 0.1% | 0.9% | 0.8% |
| NET | 0.1% | 0.9% | 0.8% |
| ALAB | 0.1% | 0.7% | 0.6% |
| RKLB | 0.1% | 0.6% | 0.5% |
| LNG | 0.1% | 0.6% | 0.5% |
| FERG | 0.1% | 0.5% | 0.5% |
| CRDO | 0.1% | 0.5% | 0.4% |
Where VTSAX and VXF 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 | VTSAX | VXF | Δ |
|---|---|---|---|
| Information Technology | 35.2% | 17.6% | +17.6pp |
| Industrials | 10.4% | 19.8% | −9.4pp |
| Communication Services | 9.1% | 4.5% | +4.6pp |
| Health Care | 9.5% | 13.2% | −3.6pp |
| Cash and/or Derivatives | 0.6% | 3.8% | −3.1pp |
| Real Estate | 2.2% | 4.8% | −2.6pp |
| Financials | 11.9% | 13.9% | −2.0pp |
| Materials | 2.0% | 4.1% | −2.0pp |
Δ is VTSAX minus VXF, 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
87.4% of VTSAX by weight, held in no part of VXF.
1.9% of VXF by weight, held in no part of VTSAX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VTSAX | VXF | |
|---|---|---|
| Top 10 holdings | 31.9% | 10.6% |
| Positions held | 3,495 | 3,327 |
| Cost per $10,000 held, per year | $4 | $5 |
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 VTSAX and VXF overlap?
VTSAX and VXF overlap 12.1% by portfolio weight — largely distinct portfolios. They share 2,964 holdings. The figure comes from current issuer holdings files (VTSAX as of 2026-06-30, VXF as of 2026-06-30).
How is the overlap between VTSAX and VXF calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VTSAX holds a stock at 6% and VXF 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 VTSAX and VXF?
That depends on your goals — we state facts, not advice. At 12.1% overlap, each fund still contributes meaningfully distinct exposure.
What does VTSAX own that VXF doesn't?
VTSAX holds 3,495 positions and VXF holds 3,327; 531 of VTSAX's positions don't appear in VXF at all, and they are 87.4% of VTSAX by weight.
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Related comparisons
Sources: issuer holdings files, VTSAX as of 2026-06-30, VXF as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.