IWD vs SOXX: 2% overlap
iShares Russell 1000 Value ETF and iShares Semiconductor ETF share 2.4% 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 2.0. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
IWD and SOXX hold 7 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IWD | in SOXX | Δ |
|---|---|---|---|
| INTC | 1.2% | 5.3% | 4.1% |
| QCOM | 0.5% | 2.8% | 2.3% |
| ADI | 0.5% | 3.8% | 3.4% |
| ON | 0.1% | 1.8% | 1.7% |
| CASH | 0.1% | 0.1% | 0.0% |
| ENTG | 0.0% | 1.1% | 1.0% |
| SWKS | 0.0% | 0.5% | 0.4% |
Where IWD and SOXX 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 | SOXX | Δ |
|---|---|---|---|
| Information Technology | 18.0% | 99.9% | −81.8pp |
| Financials | 19.6% | 0.0% | +19.6pp |
| Health Care | 12.7% | 0.0% | +12.7pp |
| Industrials | 11.3% | 0.0% | +11.3pp |
| Consumer Discretionary | 10.2% | 0.0% | +10.2pp |
| Consumer Staples | 7.4% | 0.0% | +7.4pp |
| Energy | 6.1% | 0.0% | +6.1pp |
| Utilities | 3.9% | 0.0% | +3.9pp |
Δ is IWD minus SOXX, 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
97.5% of IWD by weight, held in no part of SOXX.
84.5% of SOXX 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 | SOXX | |
|---|---|---|
| Top 10 holdings | 27.8% | 60.9% |
| Positions held | 872 | 32 |
| Cost per $10,000 held, per year | $19 | $34 |
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 SOXX overlap?
IWD and SOXX overlap 2.4% by portfolio weight — largely distinct portfolios. They share 7 holdings. The figure comes from current issuer holdings files (IWD as of 2026-07-23, SOXX as of 2026-07-23).
How is the overlap between IWD and SOXX 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 SOXX 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 SOXX?
That depends on your goals — we state facts, not advice. At 2.4% overlap, each fund still contributes meaningfully distinct exposure.
What does IWD own that SOXX doesn't?
IWD holds 872 positions and SOXX holds 32; 864 of IWD's positions don't appear in SOXX at all, and they are 97.5% of IWD by weight.
You probably hold more than two funds
This page compares IWD and SOXX. 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 IWD vs SOXX
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, IWD as of 2026-07-23, SOXX as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.