SOXX vs VOOV: 6% overlap
iShares Semiconductor ETF and Vanguard S&P 500 Value ETF share 5.8% 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 1.9. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
SOXX and VOOV hold 11 of the same securities. The ten contributing most to the overlap figure:
| Holding | in SOXX | in VOOV | Δ |
|---|---|---|---|
| INTC | 5.2% | 2.3% | 2.9% |
| TXN | 4.1% | 0.9% | 3.1% |
| QCOM | 3.0% | 0.7% | 2.4% |
| ADI | 4.0% | 0.7% | 3.3% |
| MRVL | 4.1% | 0.5% | 3.6% |
| NXPI | 3.7% | 0.2% | 3.5% |
| MCHP | 2.3% | 0.2% | 2.1% |
| ON | 1.9% | 0.1% | 1.8% |
| CASH | 0.1% | 0.5% | 0.3% |
| TER | 2.9% | 0.1% | 2.8% |
Where SOXX 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 | SOXX | VOOV | Δ |
|---|---|---|---|
| Information Technology | 99.9% | 20.5% | +79.4pp |
| Financials | 0.0% | 15.3% | −15.3pp |
| Health Care | 0.0% | 12.2% | −12.2pp |
| Industrials | 0.0% | 11.4% | −11.4pp |
| Consumer Discretionary | 0.0% | 10.3% | −10.3pp |
| Consumer Staples | 0.0% | 8.8% | −8.8pp |
| Energy | 0.0% | 6.6% | −6.6pp |
| Utilities | 0.0% | 4.4% | −4.4pp |
Δ is SOXX 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
68.1% of SOXX by weight, held in no part of VOOV.
93.8% of VOOV by weight, held in no part of SOXX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| SOXX | VOOV | |
|---|---|---|
| Top 10 holdings | 60.4% | 23.8% |
| Positions held | 32 | 438 |
| Cost per $10,000 held, per year | $34 | $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 SOXX and VOOV overlap?
SOXX and VOOV overlap 5.8% by portfolio weight — largely distinct portfolios. They share 11 holdings. The figure comes from current issuer holdings files (SOXX as of 2026-07-27, VOOV as of 2026-06-30).
How is the overlap between SOXX and VOOV calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If SOXX 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 SOXX and VOOV?
That depends on your goals — we state facts, not advice. At 5.8% overlap, each fund still contributes meaningfully distinct exposure.
What does SOXX own that VOOV doesn't?
SOXX holds 32 positions and VOOV holds 438; 20 of SOXX's positions don't appear in VOOV at all, and they are 68.1% of SOXX by weight.
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Related comparisons
Sources: issuer holdings files, SOXX as of 2026-07-27, VOOV as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.