IWD vs VOOV: 71% overlap
iShares Russell 1000 Value ETF and Vanguard S&P 500 Value ETF share 70.6% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published 27 days apart — VOOV as of 2026-06-30, the rest through 2026-07-27. 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 1.3. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
IWD and VOOV hold 397 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IWD | in VOOV | Δ |
|---|---|---|---|
| AAPL | 6.1% | 7.3% | 1.2% |
| AMZN | 5.6% | 3.8% | 1.8% |
| XOM | 1.8% | 2.0% | 0.2% |
| WMT | 1.2% | 1.7% | 0.5% |
| INTC | 1.1% | 2.3% | 1.2% |
| BAC | 1.0% | 1.3% | 0.2% |
| UNH | 1.0% | 1.3% | 0.3% |
| CVX | 1.0% | 1.1% | 0.1% |
| PG | 0.9% | 1.2% | 0.2% |
| JPM | 2.6% | 0.9% | 1.7% |
Where IWD and VOOV 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 | VOOV | Δ |
|---|---|---|---|
| Financials | 19.6% | 15.3% | +4.3pp |
| Information Technology | 18.2% | 20.5% | −2.3pp |
| Consumer Staples | 7.5% | 8.8% | −1.3pp |
| Energy | 5.9% | 6.6% | −0.7pp |
| Utilities | 3.8% | 4.4% | −0.6pp |
| Communication Services | 3.4% | 2.9% | +0.5pp |
| Health Care | 12.7% | 12.2% | +0.4pp |
| Real Estate | 3.7% | 3.3% | +0.4pp |
Δ is IWD minus VOOV, 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
19.9% of IWD by weight, held in no part of VOOV.
10.3% of VOOV 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 | VOOV | |
|---|---|---|
| Top 10 holdings | 27.8% | 23.8% |
| Positions held | 872 | 438 |
| Cost per $10,000 held, per year | $19 | $7 |
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 VOOV overlap?
IWD and VOOV overlap 70.6% by portfolio weight — substantial duplication if you hold both. They share 397 holdings. The figure comes from current issuer holdings files (IWD as of 2026-07-27, VOOV as of 2026-06-30).
How is the overlap between IWD and VOOV 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 VOOV 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 VOOV?
That depends on your goals — we state facts, not advice. At 70.6% overlap, most of what one fund holds, the other holds too. Expense ratios: IWD 0.19% versus VOOV 0.07%.
What does IWD own that VOOV doesn't?
IWD holds 872 positions and VOOV holds 438; 474 of IWD's positions don't appear in VOOV at all, and they are 19.9% of IWD by weight.
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Related comparisons
Sources: issuer holdings files, IWD as of 2026-07-27, VOOV as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.