DIA vs SNA: Correlation
How closely do SPDR Dow Jones Industrial Average ETF (DIA) and Snap-on (SNA) trade together? Their weekly returns over three years give a correlation of 0.59, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DIA and SNA?
On 3 years of weekly data the DIA/SNA correlation comes out at 0.59, moderate. Little has changed lately, as the 1-year reading of 0.49 lands near the 3-year figure. The 5-year figure is 0.60, and annualized covariance runs at 162.6 %².
By 3-year correlation, SNA places #68 of the 116 assets tracked against DIA. Twelve-month performance is nearly a tie, at +19.2% for DIA and +23.1% for SNA. The rolling one-year correlation moved between 0.36 and 0.75 over the past three years, a moderate range. Note the risk asymmetry: SNA runs 1.6 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 SNA: side by side
| DIA (SPDR Dow Jones Industrial Average ETF) | SNA (Snap-on) | |
|---|---|---|
| 1-year return | +19.2% | +23.1% |
| 5-year return | +64.8% | +99.6% |
| Volatility (ann.) | 13.0% | 21.3% |
| Beta vs S&P 500 | 0.79 | 0.70 |
| Max drawdown (3Y) | -16.0% | -20.8% |
| Market cap | – | $20.5B |
| P/E (trailing) | – | 20.2 |
| Dividend yield | 1.37% | 2.38% |
| Expense ratio | 0.16% | – |
| Assets under management | $45.2B | – |
| Sector / category | ETF · US Large Cap | Industrials |
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 | SNA |
|---|---|---|
| 2022 | -7.0% | +8.9% |
| 2023 | +16.0% | +29.7% |
| 2024 | +14.8% | +20.7% |
| 2025 | +14.7% | +4.3% |
| 2026 | +12.3% | +17.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DIA and SNA good diversifiers for each other?
Only partially. A correlation of 0.59 means DIA and SNA share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between DIA and SNA?
As of 2026-08-27, the correlation of weekly returns between DIA and SNA is 0.59 over 3 years, 0.49 over 1 year and 0.60 over 5 years.
Is SNA a good diversifier for DIA?
Only partially. A correlation of 0.59 means DIA and SNA share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.59 mean?
On the −1 to +1 scale, 0.59 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/dia-vs-sna.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/dia-vs-sna/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: DIA correlations · SNA correlations
