CALX vs OSIS: Correlation
How closely do Calix, Inc (CALX) and OSI Systems, Inc. (OSIS) trade together? Their weekly returns over three years give a correlation of 0.48, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CALX and OSIS?
On 3 years of weekly data the CALX/OSIS correlation comes out at 0.48, moderate. Little has changed lately, as the 1-year reading of 0.53 lands near the 3-year figure. The 5-year figure is 0.36, and annualized covariance runs at 770.9 %².
Few assets follow CALX as closely as OSIS, which ranks #1 of 10 tracked partners. Correlation aside, the last 12 months split them widely, with OSIS ahead by 28.0 points (-36.5% versus -8.5%).
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.
CALX vs OSIS: side by side
| CALX (Calix, Inc) | OSIS (OSI Systems, Inc.) | |
|---|---|---|
| 1-year return | -36.5% | -8.5% |
| 5-year return | -20.0% | +113.6% |
| Volatility (ann.) | 42.1% | 38.1% |
| Beta vs S&P 500 | 1.14 | 1.39 |
| Max drawdown (3Y) | -48.6% | -36.2% |
| Market cap | $2.4B | $3.4B |
| P/E (trailing) | 50.3 | 23.6 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CALX | OSIS |
|---|---|---|
| 2022 | -14.4% | -14.7% |
| 2023 | -36.2% | +62.3% |
| 2024 | -20.2% | +29.7% |
| 2025 | +51.8% | +52.3% |
| 2026 | -28.8% | -17.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CALX and OSIS good diversifiers for each other?
A fair diversifier. At 0.48, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between CALX and OSIS?
The CALX/OSIS correlation stands at 0.48 on a 3-year window (1 year: 0.53, 5 years: 0.36), computed from weekly returns as of 2026-08-27.
Is OSIS a good diversifier for CALX?
A fair diversifier. At 0.48, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.48 mean?
On the −1 to +1 scale, 0.48 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/calx-vs-osis.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/calx-vs-osis/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CALX correlations · OSIS correlations
