GKOS vs ISBA: Correlation
Glaukos Corporation (GKOS) and Isabella Bank Corporation (ISBA) show a weak relationship: their 3-year correlation of weekly returns is 0.24.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GKOS and ISBA?
On 3 years of weekly data the GKOS/ISBA correlation comes out at 0.24, weak. The relationship has been stable: the 1-year correlation (0.15) sits close to the 3-year figure. The 5-year figure is 0.17, and annualized covariance runs at 366.7 %².
Among the 12 assets we track against GKOS, ISBA sits near the bottom by co-movement, at rank #8. Their recent paths diverged sharply: over the last 12 months GKOS outperformed by 74.8 percentage points (+91.2% for GKOS against +16.4% for ISBA).
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.
GKOS vs ISBA: side by side
| GKOS (Glaukos Corporation) | ISBA (Isabella Bank Corporation) | |
|---|---|---|
| 1-year return | +91.2% | +16.4% |
| 5-year return | +218.6% | +104.9% |
| Volatility (ann.) | 45.7% | 33.3% |
| Beta vs S&P 500 | 0.85 | 0.05 |
| Max drawdown (3Y) | -53.7% | -34.1% |
| Market cap | $10.7B | $0.3B |
| P/E (trailing) | – | 14.2 |
| Dividend yield | 0.00% | 2.91% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GKOS | ISBA |
|---|---|---|
| 2022 | -1.7% | -3.5% |
| 2023 | +82.0% | -3.5% |
| 2024 | +88.6% | +27.7% |
| 2025 | -24.7% | +99.1% |
| 2026 | +61.1% | -21.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GKOS and ISBA good diversifiers for each other?
Reasonably. At 0.24, GKOS and ISBA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between GKOS and ISBA?
As of 2026-08-27, the correlation of weekly returns between GKOS and ISBA is 0.24 over 3 years, 0.15 over 1 year and 0.17 over 5 years.
Is ISBA a good diversifier for GKOS?
Reasonably. At 0.24, GKOS and ISBA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.24 mean?
A reading of 0.24 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/gkos-vs-isba.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/gkos-vs-isba/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: GKOS correlations · ISBA correlations
