CI vs PUMP: Correlation
Cigna (CI) and ProPetro Holding Corp. (PUMP) show a negative relationship: their 3-year correlation of weekly returns is -0.23.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CI and PUMP?
Across a 3-year window, the weekly returns of CI and PUMP correlate at -0.23, negative, meaning they tend to move in opposite directions. The link has loosened recently: the 1-year correlation (-0.54) runs below the 3-year figure (-0.23). Stretching to 5 years gives -0.08, with an annualized covariance of -396.4 %².
Among the 30 assets we track against CI, PUMP sits near the bottom by co-movement, at rank #26. The last year tells two different stories: PUMP led by 133.6 percentage points, -5.4% for CI against +128.2% for PUMP. One caveat on sizing: PUMP is 2.4 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.
CI vs PUMP: side by side
| CI (Cigna) | PUMP (ProPetro Holding Corp.) | |
|---|---|---|
| 1-year return | -5.4% | +128.2% |
| 5-year return | +46.7% | +45.4% |
| Volatility (ann.) | 26.7% | 65.1% |
| Beta vs S&P 500 | 0.22 | 0.73 |
| Max drawdown (3Y) | -32.1% | -59.1% |
| Market cap | $73.4B | $1.4B |
| P/E (trailing) | 11.6 | – |
| Dividend yield | 2.19% | 0.00% |
| Sector / category | Health Care | US Listed |
Year-by-year returns
| Year | CI | PUMP |
|---|---|---|
| 2022 | +46.7% | +28.0% |
| 2023 | -8.0% | -19.2% |
| 2024 | -6.3% | +11.3% |
| 2025 | +1.7% | +1.9% |
| 2026 | +2.0% | +17.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CI and PUMP good diversifiers for each other?
Yes: at -0.23, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between CI and PUMP?
The CI/PUMP correlation stands at -0.23 on a 3-year window (1 year: -0.54, 5 years: -0.08), computed from weekly returns as of 2026-08-27.
Is PUMP a good diversifier for CI?
Yes: at -0.23, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.23 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ci-vs-pump.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ci-vs-pump/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CI correlations · PUMP correlations
