DIA vs SOXX: Correlation & Overlap
SPDR Dow Jones Industrial Average ETF (DIA) and iShares Semiconductor ETF (SOXX) show a moderate relationship: their 3-year correlation of weekly returns is 0.59. Looking through to holdings, 2.3% of the two portfolios is the same by weight.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DIA and SOXX?
On 3 years of weekly data the DIA/SOXX correlation comes out at 0.59, moderate. The relationship has been stable: the 1-year correlation (0.54) sits close to the 3-year figure. The 5-year figure is 0.62, and annualized covariance runs at 271.6 %².
By 3-year correlation, SOXX places #69 of the 116 assets tracked against DIA. Correlation aside, the last 12 months split them widely, with SOXX ahead by 90.8 points (+19.2% versus +110.0%). Across three years, the rolling one-year figure varied moderately, from 0.42 to 0.81. One caveat on sizing: SOXX is 2.7 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
DIA vs SOXX: side by side
| DIA (SPDR Dow Jones Industrial Average ETF) | SOXX (iShares Semiconductor ETF) | |
|---|---|---|
| 1-year return | +19.2% | +110.0% |
| 5-year return | +64.8% | +247.5% |
| Volatility (ann.) | 13.0% | 35.2% |
| Beta vs S&P 500 | 0.79 | 1.93 |
| Max drawdown (3Y) | -16.0% | -41.4% |
| Dividend yield | 1.37% | 0.29% |
| Expense ratio | 0.16% | 0.33% |
| Assets under management | $45.2B | $44.7B |
| Sector / category | ETF · US Large Cap | ETF · Thematic |
On the fund side, DIA sits in the Large Value category at State Street Investment Management, with $45.2B under management, 30 holdings, a 0.16% expense ratio, a 1.37% trailing dividend yield. On the fund side, SOXX sits in the Technology category at iShares, with $44.7B under management, 30 holdings, a 0.33% expense ratio, a 0.29% trailing dividend yield.
Portfolio overlap between DIA and SOXX
The two portfolios are largely distinct. Weighing the shared positions, 2.3% of the two funds is identical, spread across 1 common holdings. That shared book is a large part of why the returns line up.
| Common holding | Weight in DIA | Weight in SOXX |
|---|---|---|
| NVDA | 2.33% | 8.87% |
Largest positions held only by DIA: GS (11.56%), CAT (9.13%), MSFT (5.51%), AMGN (4.89%), UNH (4.45%). Only by SOXX: MU (8.64%), AMD (8.33%), AVGO (7.11%), MRVL (5.34%), INTC (4.97%).
Overlap = sum of the smaller of the two weights across common holdings, from issuer disclosures as of 2026-08-26. Top 1 common positions shown.
Year-by-year returns
| Year | DIA | SOXX |
|---|---|---|
| 2022 | -7.0% | -35.1% |
| 2023 | +16.0% | +67.1% |
| 2024 | +14.8% | +12.9% |
| 2025 | +14.7% | +40.7% |
| 2026 | +12.3% | +74.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DIA and SOXX good diversifiers for each other?
Somewhat, no more. With 0.59 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between DIA and SOXX?
As of 2026-08-27, the correlation of weekly returns between DIA and SOXX is 0.59 over 3 years, 0.54 over 1 year and 0.62 over 5 years.
Is SOXX a good diversifier for DIA?
Somewhat, no more. With 0.59 correlation, most large moves hit both names, and the diversification benefit stays modest.
How much do DIA and SOXX overlap?
The two funds share 1 holdings amounting to 2.3% of weight, per issuer portfolio files dated 2026-08-26.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/dia-vs-soxx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/dia-vs-soxx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: DIA correlations · SOXX correlations
