COO vs STE: Correlation
Cooper Companies (The) (COO) and Steris (STE) show a moderate relationship: their 3-year correlation of weekly returns is 0.44.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are COO and STE?
Over the past 3 years, COO and STE moved with a correlation of 0.44, which is moderate. Recent behaviour matches the longer record: 0.49 over 1 year against 0.44 over 3. Over 5 years the correlation is 0.54, and the annualized covariance of weekly returns is 273.7 %².
By 3-year correlation, STE places #21 of the 38 assets tracked against COO. Twelve-month performance is nearly a tie, at -4.3% for COO and -5.7% for STE. Across three years, the rolling one-year figure varied moderately, from 0.19 to 0.61.
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.
COO vs STE: side by side
| COO (Cooper Companies (The)) | STE (Steris) | |
|---|---|---|
| 1-year return | -4.3% | -5.7% |
| 5-year return | -36.8% | +13.6% |
| Volatility (ann.) | 27.7% | 22.3% |
| Beta vs S&P 500 | 0.69 | 0.43 |
| Max drawdown (3Y) | -47.0% | -25.4% |
| Market cap | – | $22.7B |
| P/E (trailing) | 61.7 | 28.5 |
| Dividend yield | 0.00% | 1.06% |
| Sector / category | Health Care | Health Care |
Year-by-year returns
| Year | COO | STE |
|---|---|---|
| 2022 | -21.1% | -23.4% |
| 2023 | +14.5% | +20.2% |
| 2024 | -2.8% | -5.6% |
| 2025 | -10.8% | +24.3% |
| 2026 | -13.4% | -7.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are COO and STE good diversifiers for each other?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between COO and STE?
As of 2026-08-27, the correlation of weekly returns between COO and STE is 0.44 over 3 years, 0.49 over 1 year and 0.54 over 5 years.
Is STE a good diversifier for COO?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.44 mean?
On the −1 to +1 scale, 0.44 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/coo-vs-ste.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/coo-vs-ste/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: COO correlations · STE correlations
