SOXX vs VGT: 36% overlap
iShares Semiconductor ETF and Vanguard Information Technology ETF share 35.5% 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 1.6. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
SOXX and VGT hold 24 of the same securities. The ten contributing most to the overlap figure:
| Holding | in SOXX | in VGT | Δ |
|---|---|---|---|
| NVDA | 8.3% | 16.1% | 7.8% |
| MU | 8.5% | 5.0% | 3.5% |
| AVGO | 7.3% | 3.8% | 3.5% |
| AMD | 8.7% | 3.6% | 5.1% |
| INTC | 5.3% | 2.4% | 2.9% |
| AMAT | 5.2% | 2.3% | 3.0% |
| LRCX | 4.2% | 2.1% | 2.1% |
| KLAC | 4.8% | 1.6% | 3.2% |
| TXN | 3.9% | 1.1% | 2.8% |
| MRVL | 4.3% | 1.1% | 3.2% |
Where SOXX and VGT 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 | VGT | Δ |
|---|---|---|---|
| Information Technology | 99.9% | 99.5% | +0.4pp |
| Cash and/or Derivatives | 0.1% | 0.4% | −0.3pp |
| Consumer Staples | 0.0% | 0.1% | −0.1pp |
| Consumer Discretionary | 0.0% | 0.0% | −0.0pp |
| Financials | 0.0% | 0.0% | −0.0pp |
| Materials | 0.0% | 0.0% | −0.0pp |
| Unclassified | 0.0% | 0.0% | −0.0pp |
| Real Estate | 0.0% | 0.0% | −0.0pp |
Δ is SOXX minus VGT, 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
11.0% of SOXX by weight, held in no part of VGT.
56.3% of VGT 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 | VGT | |
|---|---|---|
| Top 10 holdings | 60.9% | 59.9% |
| Positions held | 32 | 322 |
| Cost per $10,000 held, per year | $34 | $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 SOXX and VGT overlap?
SOXX and VGT overlap 35.5% by portfolio weight — moderate overlap. They share 24 holdings. The figure comes from current issuer holdings files (SOXX as of 2026-07-23, VGT as of 2026-06-30).
How is the overlap between SOXX and VGT 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 VGT 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 VGT?
That depends on your goals — we state facts, not advice. At 35.5% overlap, each fund still contributes meaningfully distinct exposure.
What does SOXX own that VGT doesn't?
SOXX holds 32 positions and VGT holds 322; 7 of SOXX's positions don't appear in VGT at all, and they are 11.0% of SOXX by weight.
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Related comparisons
Sources: issuer holdings files, SOXX as of 2026-07-23, VGT as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.