VTI vs VTSAX: 100% overlap
Vanguard Total Stock Market ETF and Vanguard Total Stock Market Index Admiral share 100.0% 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 1.0. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
VTI and VTSAX hold 3,495 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VTI | in VTSAX | Δ |
|---|---|---|---|
| NVDA | 6.3% | 6.3% | 0.0% |
| AAPL | 5.8% | 5.8% | 0.0% |
| MSFT | 3.8% | 3.8% | 0.0% |
| AMZN | 3.2% | 3.2% | 0.0% |
| GOOGL | 2.9% | 2.9% | 0.0% |
| AVGO | 2.5% | 2.5% | 0.0% |
| GOOG | 2.3% | 2.3% | 0.0% |
| MU | 1.8% | 1.8% | 0.0% |
| META | 1.7% | 1.7% | 0.0% |
| TSLA | 1.6% | 1.6% | 0.0% |
Where VTI and VTSAX 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 | VTI | VTSAX | Δ |
|---|---|---|---|
| Unclassified | 0.2% | 0.2% | +0.0pp |
| Information Technology | 35.2% | 35.2% | +0.0pp |
| Consumer Discretionary | 9.2% | 9.2% | +0.0pp |
| Communication Services | 9.1% | 9.1% | +0.0pp |
| Health Care | 9.5% | 9.5% | +0.0pp |
| Financials | 11.9% | 11.9% | +0.0pp |
| Energy | 3.1% | 3.1% | +0.0pp |
| Consumer Staples | 4.3% | 4.3% | +0.0pp |
Δ is VTI minus VTSAX, 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 VTI by weight, held in no part of VTSAX.
0.0% of VTSAX by weight, held in no part of VTI.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VTI | VTSAX | |
|---|---|---|
| Top 10 holdings | 31.9% | 31.9% |
| Positions held | 3,495 | 3,495 |
| Cost per $10,000 held, per year | $3 | $4 |
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 VTI and VTSAX overlap?
VTI and VTSAX overlap 100.0% by portfolio weight — they are effectively the same fund. They share 3,495 holdings. The figure comes from current issuer holdings files (VTI as of 2026-06-30, VTSAX as of 2026-06-30).
How is the overlap between VTI and VTSAX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VTI holds a stock at 6% and VTSAX 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 VTI and VTSAX?
That depends on your goals — we state facts, not advice. At 100.0% overlap, most of what one fund holds, the other holds too. Expense ratios: VTI 0.03% versus VTSAX 0.04%.
What does VTI own that VTSAX doesn't?
VTI holds 3,495 positions and VTSAX holds 3,495; 0 of VTI's positions don't appear in VTSAX at all, and they are 0.0% of VTI by weight.
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Related comparisons
Sources: issuer holdings files, VTI as of 2026-06-30, VTSAX as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.