VTSAX vs VTWAX: 62% overlap
Vanguard Total Stock Market Index Admiral and Vanguard Total World Stock Index Admiral share 61.9% 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 1.4. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
VTSAX and VTWAX hold 1,563 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VTSAX | in VTWAX | Δ |
|---|---|---|---|
| NVDA | 6.3% | 4.0% | 2.3% |
| AAPL | 5.8% | 3.6% | 2.3% |
| MSFT | 3.8% | 2.4% | 1.4% |
| AMZN | 3.2% | 2.0% | 1.2% |
| GOOGL | 2.9% | 1.8% | 1.1% |
| AVGO | 2.5% | 1.5% | 1.0% |
| GOOG | 2.3% | 1.4% | 0.9% |
| MU | 1.8% | 1.1% | 0.7% |
| META | 1.7% | 1.1% | 0.6% |
| TSLA | 1.6% | 1.1% | 0.6% |
Where VTSAX and VTWAX 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 | VTWAX | Δ |
|---|---|---|---|
| Information Technology | 35.2% | 30.1% | +5.1pp |
| Unclassified | 0.2% | 3.8% | −3.6pp |
| Financials | 11.9% | 14.9% | −3.0pp |
| Communication Services | 9.1% | 7.0% | +2.1pp |
| Health Care | 9.5% | 7.7% | +1.8pp |
| Materials | 2.0% | 3.3% | −1.3pp |
| Industrials | 10.4% | 11.5% | −1.1pp |
| Consumer Discretionary | 9.2% | 8.6% | +0.5pp |
Δ is VTSAX minus VTWAX, 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
1.7% of VTSAX by weight, held in no part of VTWAX.
36.0% of VTWAX 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 | VTWAX | |
|---|---|---|
| Top 10 holdings | 31.9% | 20.5% |
| Positions held | 3,495 | 9,600 |
| Cost per $10,000 held, per year | $4 | $9 |
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 VTWAX overlap?
VTSAX and VTWAX overlap 61.9% by portfolio weight — substantial duplication if you hold both. They share 1,563 holdings. The figure comes from current issuer holdings files (VTSAX as of 2026-06-30, VTWAX as of 2026-06-30).
How is the overlap between VTSAX and VTWAX 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 VTWAX 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 VTWAX?
That depends on your goals — we state facts, not advice. At 61.9% overlap, each fund still contributes meaningfully distinct exposure.
What does VTSAX own that VTWAX doesn't?
VTSAX holds 3,495 positions and VTWAX holds 9,600; 1,932 of VTSAX's positions don't appear in VTWAX at all, and they are 1.7% of VTSAX by weight.
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Related comparisons
Sources: issuer holdings files, VTSAX as of 2026-06-30, VTWAX as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.