IVV vs SMH: 18% overlap
iShares Core S&P 500 ETF and VanEck Semiconductor ETF share 18.3% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published about 4 months apart — SMH as of 2026-03-31, the rest through 2026-07-23. 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 1.8. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
IVV and SMH hold 19 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IVV | in SMH | Δ |
|---|---|---|---|
| NVDA | 7.9% | 19.6% | 11.7% |
| AVGO | 2.9% | 7.8% | 4.9% |
| MU | 1.8% | 4.2% | 2.5% |
| AMD | 1.4% | 4.7% | 3.3% |
| INTC | 0.7% | 4.3% | 3.6% |
| AMAT | 0.7% | 4.6% | 3.9% |
| LRCX | 0.6% | 4.6% | 4.0% |
| KLAC | 0.4% | 4.7% | 4.3% |
| TXN | 0.4% | 4.6% | 4.2% |
| ADI | 0.3% | 4.7% | 4.4% |
Where IVV and SMH 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 | IVV | SMH | Δ |
|---|---|---|---|
| Information Technology | 37.5% | 92.8% | −55.3pp |
| Financials | 12.3% | 0.0% | +12.3pp |
| Communication Services | 9.3% | 0.0% | +9.3pp |
| Health Care | 9.1% | 0.0% | +9.1pp |
| Industrials | 8.9% | 0.0% | +8.9pp |
| Consumer Discretionary | 8.7% | 0.0% | +8.7pp |
| Unclassified | 0.0% | 7.2% | −7.2pp |
| Consumer Staples | 4.6% | 0.0% | +4.6pp |
Δ is IVV minus SMH, 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
81.6% of IVV by weight, held in no part of SMH.
20.2% of SMH by weight, held in no part of IVV.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IVV | SMH | |
|---|---|---|
| Top 10 holdings | 36.8% | 72.2% |
| Positions held | 506 | 26 |
| Cost per $10,000 held, per year | $3 | $35 |
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 IVV and SMH overlap?
IVV and SMH overlap 18.3% by portfolio weight — moderate overlap. They share 19 holdings. The figure comes from current issuer holdings files (IVV as of 2026-07-23, SMH as of 2026-03-31).
How is the overlap between IVV and SMH calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IVV holds a stock at 6% and SMH 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 IVV and SMH?
That depends on your goals — we state facts, not advice. At 18.3% overlap, each fund still contributes meaningfully distinct exposure.
What does IVV own that SMH doesn't?
IVV holds 506 positions and SMH holds 26; 486 of IVV's positions don't appear in SMH at all, and they are 81.6% of IVV by weight.
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Related comparisons
Sources: issuer holdings files, IVV as of 2026-07-23, SMH as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.