ASG vs OSIS: Correlation
How closely do Liberty All-Star Growth Fund, Inc. (ASG) and OSI Systems, Inc. (OSIS) trade together? Their weekly returns over three years give a correlation of 0.60, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ASG and OSIS?
Across a 3-year window, the weekly returns of ASG and OSIS correlate at 0.60, strong. The link has loosened recently: the 1-year correlation (0.45) runs below the 3-year figure (0.60). Stretching to 5 years gives 0.52, with an annualized covariance of 415.6 %².
Among the 52 assets we track against ASG, OSIS ranks #22 by 3-year correlation. The trailing year gives ASG the advantage: +3.3% versus -8.5%, a 11.8-point spread. Note the risk asymmetry: OSIS runs 2.1 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
ASG vs OSIS: side by side
| ASG (Liberty All-Star Growth Fund, Inc.) | OSIS (OSI Systems, Inc.) | |
|---|---|---|
| 1-year return | +3.3% | -8.5% |
| 5-year return | -5.6% | +113.6% |
| Volatility (ann.) | 18.3% | 38.1% |
| Beta vs S&P 500 | 1.12 | 1.39 |
| Max drawdown (3Y) | -25.3% | -36.2% |
| Market cap | $0.3B | $3.4B |
| P/E (trailing) | 23.9 | 23.6 |
| Dividend yield | 8.76% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ASG | OSIS |
|---|---|---|
| 2022 | -40.9% | -14.7% |
| 2023 | +16.2% | +62.3% |
| 2024 | +16.8% | +29.7% |
| 2025 | +2.2% | +52.3% |
| 2026 | +6.0% | -17.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ASG and OSIS good diversifiers for each other?
To a limited degree. At 0.60 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between ASG and OSIS?
The ASG/OSIS correlation stands at 0.60 on a 3-year window (1 year: 0.45, 5 years: 0.52), computed from weekly returns as of 2026-08-27.
Is OSIS a good diversifier for ASG?
To a limited degree. At 0.60 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
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/asg-vs-osis.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/asg-vs-osis/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ASG correlations · OSIS correlations
