VOOV vs VTWAX: 34% overlap
Vanguard S&P 500 Value ETF and Vanguard Total World Stock Index Admiral share 34.3% 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 1.7. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
VOOV and VTWAX hold 436 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VOOV | in VTWAX | Δ |
|---|---|---|---|
| AAPL | 7.3% | 3.6% | 3.7% |
| AMZN | 3.8% | 2.0% | 1.8% |
| TSLA | 1.6% | 1.1% | 0.5% |
| JPM | 0.9% | 0.7% | 0.2% |
| INTC | 2.3% | 0.5% | 1.7% |
| JNJ | 0.9% | 0.5% | 0.3% |
| XOM | 2.0% | 0.5% | 1.5% |
| V | 0.9% | 0.5% | 0.4% |
| CASH | 0.5% | 1.0% | 0.5% |
| WMT | 1.7% | 0.4% | 1.3% |
Where VOOV 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 | VOOV | VTWAX | Δ |
|---|---|---|---|
| Information Technology | 20.5% | 30.1% | −9.6pp |
| Health Care | 12.2% | 7.7% | +4.5pp |
| Consumer Staples | 8.8% | 4.6% | +4.2pp |
| Communication Services | 2.9% | 7.0% | −4.1pp |
| Unclassified | 0.0% | 3.8% | −3.8pp |
| Energy | 6.6% | 3.0% | +3.6pp |
| Utilities | 4.4% | 2.5% | +1.9pp |
| Consumer Discretionary | 10.3% | 8.6% | +1.7pp |
Δ is VOOV 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
0.0% of VOOV by weight, held in no part of VTWAX.
65.0% of VTWAX by weight, held in no part of VOOV.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VOOV | VTWAX | |
|---|---|---|
| Top 10 holdings | 23.8% | 20.5% |
| Positions held | 438 | 9,600 |
| Cost per $10,000 held, per year | $7 | $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 VOOV and VTWAX overlap?
VOOV and VTWAX overlap 34.3% by portfolio weight — moderate overlap. They share 436 holdings. The figure comes from current issuer holdings files (VOOV as of 2026-06-30, VTWAX as of 2026-06-30).
How is the overlap between VOOV and VTWAX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VOOV 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 VOOV and VTWAX?
That depends on your goals — we state facts, not advice. At 34.3% overlap, each fund still contributes meaningfully distinct exposure.
What does VOOV own that VTWAX doesn't?
VOOV holds 438 positions and VTWAX holds 9,600; 2 of VOOV's positions don't appear in VTWAX at all, and they are 0.0% of VOOV by weight.
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Related comparisons
Sources: issuer holdings files, VOOV as of 2026-06-30, VTWAX as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.