DIA vs PFG: Correlation
SPDR Dow Jones Industrial Average ETF (DIA) and Principal Financial Group (PFG) show a strong relationship: their 3-year correlation of weekly returns is 0.69.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DIA and PFG?
On 3 years of weekly data the DIA/PFG correlation comes out at 0.69, strong. The link has loosened recently: the 1-year correlation (0.50) runs below the 3-year figure (0.69). The 5-year figure is 0.70, and annualized covariance runs at 206.6 %².
Within DIA's tracked universe of 116 assets, PFG comes in at #42 by 3-year correlation. The last year tells two different stories: PFG led by 24.7 percentage points, +19.2% for DIA against +43.9% for PFG. The rolling one-year correlation moved between 0.50 and 0.81 over the past three years, a moderate range. One caveat on sizing: PFG is 1.8 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 PFG: side by side
| DIA (SPDR Dow Jones Industrial Average ETF) | PFG (Principal Financial Group) | |
|---|---|---|
| 1-year return | +19.2% | +43.9% |
| 5-year return | +64.8% | +99.7% |
| Volatility (ann.) | 13.0% | 22.9% |
| Beta vs S&P 500 | 0.79 | 0.88 |
| Max drawdown (3Y) | -16.0% | -22.4% |
| Market cap | – | $24.0B |
| P/E (trailing) | – | 16.0 |
| Dividend yield | 1.37% | 2.84% |
| Expense ratio | 0.16% | – |
| Assets under management | $45.2B | – |
| Sector / category | ETF · US Large Cap | Financials |
DIA, State Street Investment Management's Large Value fund, carries $45.2B under management, 30 holdings, a 0.16% expense ratio, a 1.37% trailing dividend yield.
Year-by-year returns
| Year | DIA | PFG |
|---|---|---|
| 2022 | -7.0% | +20.1% |
| 2023 | +16.0% | -2.8% |
| 2024 | +14.8% | +1.9% |
| 2025 | +14.7% | +18.4% |
| 2026 | +12.3% | +29.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DIA and PFG good diversifiers for each other?
Somewhat, no more. With 0.69 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between DIA and PFG?
Using weekly returns as of 2026-08-27: 0.69 over 3 years, with 0.50 over the last year and 0.70 over 5 years.
Is PFG a good diversifier for DIA?
Somewhat, no more. With 0.69 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.69 mean?
A reading of 0.69 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/dia-vs-pfg.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/dia-vs-pfg/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: DIA correlations · PFG correlations
