CI vs SLGN: Correlation
Cigna (CI) and Silgan Holdings Inc. (SLGN) show a moderate relationship: their 3-year correlation of weekly returns is 0.48.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CI and SLGN?
On 3 years of weekly data the CI/SLGN correlation comes out at 0.48, moderate. Recent behaviour matches the longer record: 0.51 over 1 year against 0.48 over 3. The 5-year figure is 0.39, and annualized covariance runs at 376.7 %².
In CI's tracked universe of 30 assets, SLGN sits right near the top at #2. Neither side won the trailing year by much: -5.4% against -7.9%.
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 SLGN: side by side
| CI (Cigna) | SLGN (Silgan Holdings Inc.) | |
|---|---|---|
| 1-year return | -5.4% | -7.9% |
| 5-year return | +46.7% | +5.9% |
| Volatility (ann.) | 26.7% | 29.4% |
| Beta vs S&P 500 | 0.22 | 0.58 |
| Max drawdown (3Y) | -32.1% | -35.0% |
| Market cap | $73.4B | $4.4B |
| P/E (trailing) | 11.6 | 16.9 |
| Dividend yield | 2.19% | 1.91% |
| Sector / category | Health Care | US Listed |
Year-by-year returns
| Year | CI | SLGN |
|---|---|---|
| 2022 | +46.7% | +22.7% |
| 2023 | -8.0% | -11.3% |
| 2024 | -6.3% | +16.8% |
| 2025 | +1.7% | -21.1% |
| 2026 | +2.0% | +4.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CI and SLGN good diversifiers for each other?
Reasonably. At 0.48, CI and SLGN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between CI and SLGN?
Using weekly returns as of 2026-08-27: 0.48 over 3 years, with 0.51 over the last year and 0.39 over 5 years.
Is SLGN a good diversifier for CI?
Reasonably. At 0.48, CI and SLGN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.48 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-slgn.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ci-vs-slgn/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CI correlations · SLGN correlations
