IWD vs VTSAX: 57% overlap
iShares Russell 1000 Value ETF and Vanguard Total Stock Market Index Admiral share 56.9% 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
IWD and VTSAX hold 838 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IWD | in VTSAX | Δ |
|---|---|---|---|
| AAPL | 5.9% | 5.8% | 0.0% |
| MSFT | 3.9% | 3.8% | 0.1% |
| AMZN | 5.7% | 3.2% | 2.6% |
| BRK-B | 2.5% | 1.2% | 1.3% |
| JPM | 2.6% | 1.1% | 1.5% |
| JNJ | 1.7% | 0.8% | 0.9% |
| XOM | 1.8% | 0.8% | 1.0% |
| INTC | 1.2% | 0.8% | 0.4% |
| WMT | 1.2% | 0.7% | 0.5% |
| META | 0.7% | 1.7% | 1.0% |
Where IWD 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 | IWD | VTSAX | Δ |
|---|---|---|---|
| Information Technology | 18.0% | 35.2% | −17.2pp |
| Financials | 19.6% | 11.9% | +7.7pp |
| Communication Services | 3.3% | 9.1% | −5.7pp |
| Health Care | 12.7% | 9.5% | +3.2pp |
| Consumer Staples | 7.4% | 4.3% | +3.1pp |
| Energy | 6.1% | 3.1% | +3.0pp |
| Utilities | 3.9% | 2.2% | +1.8pp |
| Materials | 3.7% | 2.0% | +1.6pp |
Δ is IWD 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
0.5% of IWD by weight, held in no part of VTSAX.
39.8% of VTSAX by weight, held in no part of IWD.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IWD | VTSAX | |
|---|---|---|
| Top 10 holdings | 27.8% | 31.9% |
| Positions held | 872 | 3,495 |
| Cost per $10,000 held, per year | $19 | $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 IWD and VTSAX overlap?
IWD and VTSAX overlap 56.9% by portfolio weight — substantial duplication if you hold both. They share 838 holdings. The figure comes from current issuer holdings files (IWD as of 2026-07-23, VTSAX as of 2026-06-30).
How is the overlap between IWD and VTSAX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IWD 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 IWD and VTSAX?
That depends on your goals — we state facts, not advice. At 56.9% overlap, each fund still contributes meaningfully distinct exposure.
What does IWD own that VTSAX doesn't?
IWD holds 872 positions and VTSAX holds 3,495; 33 of IWD's positions don't appear in VTSAX at all, and they are 0.5% of IWD by weight.
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Related comparisons
Sources: issuer holdings files, IWD as of 2026-07-23, VTSAX as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.