GERN vs PACK: Correlation
Geron Corporation (GERN) and Ranpak Holdings Corp (PACK) show a moderate relationship: their 3-year correlation of weekly returns is 0.49.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GERN and PACK?
On 3 years of weekly data the GERN/PACK correlation comes out at 0.49, moderate. The link has loosened recently: the 1-year correlation (0.32) runs below the 3-year figure (0.49). The 5-year figure is 0.32, and annualized covariance runs at 2346.2 %².
In GERN's tracked universe of 11 assets, PACK sits right near the top at #1. Correlation aside, the last 12 months split them widely, with GERN ahead by 15.4 points (+8.5% versus -6.9%).
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.
GERN vs PACK: side by side
| GERN (Geron Corporation) | PACK (Ranpak Holdings Corp) | |
|---|---|---|
| 1-year return | +8.5% | -6.9% |
| 5-year return | +6.2% | -83.7% |
| Volatility (ann.) | 64.0% | 75.3% |
| Beta vs S&P 500 | 1.34 | 1.81 |
| Max drawdown (3Y) | -79.0% | -64.5% |
| Market cap | $1.0B | $0.4B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GERN | PACK |
|---|---|---|
| 2022 | +98.4% | -84.6% |
| 2023 | -12.8% | +0.9% |
| 2024 | +67.8% | +18.2% |
| 2025 | -62.7% | -21.4% |
| 2026 | +15.9% | -7.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GERN and PACK good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.49 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between GERN and PACK?
Using weekly returns as of 2026-08-27: 0.49 over 3 years, with 0.32 over the last year and 0.32 over 5 years.
Is PACK a good diversifier for GERN?
Yes, to a useful degree: a correlation of 0.49 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.49 mean?
A reading of 0.49 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/gern-vs-pack.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/gern-vs-pack/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: GERN correlations · PACK correlations
