CMI vs VTI: Correlation
Measured on weekly returns over the past three years, Cummins (CMI) and Vanguard Total Stock Market ETF (VTI) carry a correlation of 0.60, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CMI and VTI?
Over the past 3 years, CMI and VTI moved with a correlation of 0.60, which is strong. Lately the two have drifted apart, with the 1-year correlation at 0.42 versus 0.60 over 3 years. Over 5 years the correlation is 0.62, and the annualized covariance of weekly returns is 227.4 %².
Within CMI's tracked universe of 36 assets, VTI comes in at #14 by 3-year correlation. Correlation aside, the last 12 months split them widely, with CMI ahead by 24.4 points (+45.1% versus +20.7%). On a rolling one-year basis the correlation drifted between 0.39 and 0.84, a moderate band. Risk is not evenly split, since CMI carries 1.8 times the volatility of the other side.
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.
CMI vs VTI: side by side
| CMI (Cummins) | VTI (Vanguard Total Stock Market ETF) | |
|---|---|---|
| 1-year return | +45.1% | +20.7% |
| 5-year return | +169.6% | +74.8% |
| Volatility (ann.) | 25.9% | 14.6% |
| Beta vs S&P 500 | 1.05 | 1.01 |
| Max drawdown (3Y) | -30.5% | -19.3% |
| Market cap | $79.0B | – |
| P/E (trailing) | 29.6 | – |
| Dividend yield | 1.38% | 1.06% |
| Expense ratio | – | 0.03% |
| Assets under management | – | $2,290.0B |
| Sector / category | Industrials | ETF · US Large Cap |
VTI, Vanguard's Large Blend fund, carries $2,290.0B under management, 3140 holdings, a 0.03% expense ratio, a 1.06% trailing dividend yield.
Year-by-year returns
| Year | CMI | VTI |
|---|---|---|
| 2022 | +14.1% | -19.5% |
| 2023 | +1.7% | +26.0% |
| 2024 | +48.9% | +23.8% |
| 2025 | +49.4% | +17.1% |
| 2026 | +13.6% | +14.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
Keep in mind that VTI holds CMI at a 0.12% weight, which makes a slice of this correlation mechanical rather than coincidental.
Are CMI and VTI good diversifiers for each other?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between CMI and VTI?
Using weekly returns as of 2026-08-27: 0.60 over 3 years, with 0.42 over the last year and 0.62 over 5 years.
Is VTI a good diversifier for CMI?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.60 mean?
A reading of 0.60 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/cmi-vs-vti.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/cmi-vs-vti/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CMI correlations · VTI correlations
