SOXX vs VUG: 22% overlap
iShares Semiconductor ETF and Vanguard Growth ETF share 21.9% 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 1.8. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
SOXX and VUG hold 13 of the same securities. The ten contributing most to the overlap figure:
| Holding | in SOXX | in VUG | Δ |
|---|---|---|---|
| NVDA | 8.3% | 12.6% | 4.3% |
| AVGO | 7.3% | 4.3% | 3.1% |
| AMD | 8.7% | 2.6% | 6.1% |
| AMAT | 5.2% | 1.6% | 3.6% |
| LRCX | 4.2% | 1.5% | 2.7% |
| KLAC | 4.8% | 1.1% | 3.7% |
| INTC | 5.3% | 0.8% | 4.5% |
| MRVL | 4.3% | 0.7% | 3.5% |
| TXN | 3.9% | 0.4% | 3.5% |
| TER | 3.0% | 0.2% | 2.8% |
Where SOXX and VUG 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 | VUG | Δ |
|---|---|---|---|
| Information Technology | 99.9% | 56.0% | +43.9pp |
| Communication Services | 0.0% | 15.3% | −15.3pp |
| Consumer Discretionary | 0.0% | 11.4% | −11.4pp |
| Industrials | 0.0% | 5.0% | −5.0pp |
| Health Care | 0.0% | 4.7% | −4.7pp |
| Financials | 0.0% | 3.9% | −3.9pp |
| Consumer Staples | 0.0% | 1.4% | −1.4pp |
| Real Estate | 0.0% | 1.0% | −1.0pp |
Δ is SOXX minus VUG, 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
39.1% of SOXX by weight, held in no part of VUG.
73.6% of VUG 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 | VUG | |
|---|---|---|
| Top 10 holdings | 60.9% | 60.3% |
| Positions held | 32 | 147 |
| Cost per $10,000 held, per year | $34 | $3 |
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 VUG overlap?
SOXX and VUG overlap 21.9% by portfolio weight — moderate overlap. They share 13 holdings. The figure comes from current issuer holdings files (SOXX as of 2026-07-23, VUG as of 2026-06-30).
How is the overlap between SOXX and VUG 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 VUG 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 VUG?
That depends on your goals — we state facts, not advice. At 21.9% overlap, each fund still contributes meaningfully distinct exposure.
What does SOXX own that VUG doesn't?
SOXX holds 32 positions and VUG holds 147; 18 of SOXX's positions don't appear in VUG at all, and they are 39.1% of SOXX by weight.
You probably hold more than two funds
This page compares SOXX and VUG. Paste your whole portfolio — brokerage, 401(k), IRA — and see the overlap across every fund at once, plus what you actually own underneath them and your own Effective Funds number. Free, no account, nothing stored.
X-ray my portfolio — free →Watch SOXX vs VUG
We re-read both funds’ published holdings every weeknight. Leave an address and we'll tell you when what's inside actually changes.
Not sending yet — email alerts are built but switched off, and you'll be among the first when they turn on. No spam, one-click unsubscribe.
Related comparisons
Sources: issuer holdings files, SOXX as of 2026-07-23, VUG as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.