SWTSX vs VXF: 11% overlap
Schwab Total Stock Market Index and Vanguard Extended Market ETF share 10.5% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published about 2 months apart — SWTSX as of 2026-04-30, the rest through 2026-06-30. Each fund is compared using its most recent file, so any trading in between shows up as a difference.
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
SWTSX and VXF hold 2,284 of the same securities. The ten contributing most to the overlap figure:
| Holding | in SWTSX | in VXF | Δ |
|---|---|---|---|
| CASH | 0.1% | 3.8% | 3.7% |
| BE | 0.1% | 0.9% | 0.8% |
| NET | 0.1% | 0.9% | 0.8% |
| LNG | 0.1% | 0.6% | 0.5% |
| FERG | 0.1% | 0.5% | 0.4% |
| MSTR | 0.1% | 0.3% | 0.3% |
| SNOW | 0.1% | 1.0% | 0.9% |
| ALNY | 0.1% | 0.5% | 0.4% |
| RKLB | 0.1% | 0.6% | 0.5% |
| RBLX | 0.1% | 0.4% | 0.4% |
Where SWTSX 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 | SWTSX | VXF | Δ |
|---|---|---|---|
| Information Technology | 32.3% | 17.6% | +14.6pp |
| Industrials | 9.4% | 19.8% | −10.4pp |
| Communication Services | 10.1% | 4.5% | +5.7pp |
| Health Care | 8.7% | 13.2% | −4.5pp |
| Cash and/or Derivatives | 0.1% | 3.8% | −3.7pp |
| Real Estate | 2.3% | 4.8% | −2.5pp |
| Materials | 1.6% | 4.1% | −2.4pp |
| Unclassified | 3.4% | 1.0% | +2.3pp |
Δ is SWTSX 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
89.1% of SWTSX by weight, held in no part of VXF.
8.2% of VXF by weight, held in no part of SWTSX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| SWTSX | VXF | |
|---|---|---|
| Top 10 holdings | 33.9% | 10.6% |
| Positions held | 2,939 | 3,327 |
| Cost per $10,000 held, per year | $3 | $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 SWTSX and VXF overlap?
SWTSX and VXF overlap 10.5% by portfolio weight — largely distinct portfolios. They share 2,284 holdings. The figure comes from current issuer holdings files (SWTSX as of 2026-04-30, VXF as of 2026-06-30).
How is the overlap between SWTSX and VXF calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If SWTSX 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 SWTSX and VXF?
That depends on your goals — we state facts, not advice. At 10.5% overlap, each fund still contributes meaningfully distinct exposure.
What does SWTSX own that VXF doesn't?
SWTSX holds 2,939 positions and VXF holds 3,327; 654 of SWTSX's positions don't appear in VXF at all, and they are 89.1% of SWTSX by weight.
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Related comparisons
Sources: issuer holdings files, SWTSX as of 2026-04-30, VXF as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.