DIA vs STT: Correlation
Measured on weekly returns over the past three years, SPDR Dow Jones Industrial Average ETF (DIA) and State Street Corporation (STT) carry a correlation of 0.71, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DIA and STT?
Across a 3-year window, the weekly returns of DIA and STT correlate at 0.71, strong. Lately the two have drifted apart, with the 1-year correlation at 0.56 versus 0.71 over 3 years. Stretching to 5 years gives 0.71, with an annualized covariance of 211.7 %².
By 3-year correlation, STT places #38 of the 116 assets tracked against DIA. Correlation aside, the last 12 months split them widely, with STT ahead by 53.5 points (+19.2% versus +72.7%). The link looks structural: the rolling one-year correlation barely moved, holding between 0.57 and 0.81. One caveat on sizing: STT 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 STT: side by side
| DIA (SPDR Dow Jones Industrial Average ETF) | STT (State Street Corporation) | |
|---|---|---|
| 1-year return | +19.2% | +72.7% |
| 5-year return | +64.8% | +144.9% |
| Volatility (ann.) | 13.0% | 22.9% |
| Beta vs S&P 500 | 0.79 | 0.97 |
| Max drawdown (3Y) | -16.0% | -25.7% |
| Market cap | – | $53.1B |
| P/E (trailing) | – | 17.1 |
| Dividend yield | 1.37% | 1.74% |
| Expense ratio | 0.16% | – |
| Assets under management | $45.2B | – |
| Sector / category | ETF · US Large Cap | Financials |
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.
Year-by-year returns
| Year | DIA | STT |
|---|---|---|
| 2022 | -7.0% | -13.8% |
| 2023 | +16.0% | +3.5% |
| 2024 | +14.8% | +30.2% |
| 2025 | +14.7% | +35.5% |
| 2026 | +12.3% | +52.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DIA and STT good diversifiers for each other?
Somewhat, no more. With 0.71 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between DIA and STT?
The DIA/STT correlation stands at 0.71 on a 3-year window (1 year: 0.56, 5 years: 0.71), computed from weekly returns as of 2026-08-27.
Is STT a good diversifier for DIA?
Somewhat, no more. With 0.71 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.71 mean?
A reading of 0.71 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: DIA correlations · STT correlations
