BLFS vs RGEN: Correlation
How closely do BioLife Solutions, Inc. (BLFS) and Repligen Corporation (RGEN) 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 BLFS and RGEN?
On 3 years of weekly data the BLFS/RGEN correlation comes out at 0.60, strong. The relationship has been stable: the 1-year correlation (0.64) sits close to the 3-year figure. The 5-year figure is 0.61, and annualized covariance runs at 1493.5 %².
Within BLFS's tracked universe of 15 assets, RGEN comes in at #4 by 3-year correlation. Over the last 12 months RGEN came out ahead by 6.8 percentage points (+46.3% against +53.1%).
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.
BLFS vs RGEN: side by side
| BLFS (BioLife Solutions, Inc.) | RGEN (Repligen Corporation) | |
|---|---|---|
| 1-year return | +46.3% | +53.1% |
| 5-year return | -36.2% | -35.6% |
| Volatility (ann.) | 50.1% | 49.5% |
| Beta vs S&P 500 | 1.66 | 1.35 |
| Max drawdown (3Y) | -37.0% | -50.6% |
| Market cap | $1.8B | $10.3B |
| P/E (trailing) | 37.2 | 252.8 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BLFS | RGEN |
|---|---|---|
| 2022 | -51.2% | -36.1% |
| 2023 | -10.7% | +6.2% |
| 2024 | +59.8% | -19.9% |
| 2025 | -6.9% | +13.8% |
| 2026 | +53.8% | +11.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BLFS and RGEN good diversifiers for each other?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between BLFS and RGEN?
Using weekly returns as of 2026-08-27: 0.60 over 3 years, with 0.64 over the last year and 0.61 over 5 years.
Is RGEN a good diversifier for BLFS?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.60 mean?
On the −1 to +1 scale, 0.60 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/blfs-vs-rgen.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/blfs-vs-rgen/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BLFS correlations · RGEN correlations
