INFU vs STAA: Correlation
How closely do InfuSystems Holdings, Inc. (INFU) and STAAR Surgical Company (STAA) trade together? Their weekly returns over three years give a correlation of 0.36, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are INFU and STAA?
On 3 years of weekly data the INFU/STAA correlation comes out at 0.36, moderate. The link has loosened recently: the 1-year correlation (0.14) runs below the 3-year figure (0.36). The 5-year figure is 0.32, and annualized covariance runs at 1302.1 %².
Within INFU's tracked universe of 15 assets, STAA comes in at #9 by 3-year correlation. The last year tells two different stories: INFU led by 35.2 percentage points, +16.6% for INFU against -18.6% for STAA.
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.
INFU vs STAA: side by side
| INFU (InfuSystems Holdings, Inc.) | STAA (STAAR Surgical Company) | |
|---|---|---|
| 1-year return | +16.6% | -18.6% |
| 5-year return | -14.6% | -85.0% |
| Volatility (ann.) | 58.6% | 61.9% |
| Beta vs S&P 500 | 1.46 | 0.90 |
| Max drawdown (3Y) | -56.8% | -71.1% |
| Market cap | $0.2B | $1.1B |
| P/E (trailing) | 30.2 | 279.9 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | INFU | STAA |
|---|---|---|
| 2022 | -49.0% | -46.8% |
| 2023 | +21.4% | -35.7% |
| 2024 | -19.8% | -22.2% |
| 2025 | +6.2% | -4.9% |
| 2026 | +34.4% | -3.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are INFU and STAA good diversifiers for each other?
Reasonably. At 0.36, INFU and STAA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between INFU and STAA?
As of 2026-08-27, the correlation of weekly returns between INFU and STAA is 0.36 over 3 years, 0.14 over 1 year and 0.32 over 5 years.
Is STAA a good diversifier for INFU?
Reasonably. At 0.36, INFU and STAA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 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.
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Related comparisons
Hubs: INFU correlations · STAA correlations
