RGEN vs TMO: Correlation
Repligen Corporation (RGEN) and Thermo Fisher Scientific (TMO) show a strong relationship: their 3-year correlation of weekly returns is 0.65.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RGEN and TMO?
On 3 years of weekly data the RGEN/TMO correlation comes out at 0.65, strong. The relationship has been stable: the 1-year correlation (0.67) sits close to the 3-year figure. The 5-year figure is 0.66, and annualized covariance runs at 941.3 %².
TMO is one of the assets that tracks RGEN most closely: it ranks #2 out of the 17 assets we track against RGEN. Their recent paths diverged sharply: over the last 12 months RGEN outperformed by 23.4 percentage points (+53.1% for RGEN against +29.7% for TMO). Risk is not evenly split, since RGEN carries 1.7 times the volatility of the other side.
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.
RGEN vs TMO: side by side
| RGEN (Repligen Corporation) | TMO (Thermo Fisher Scientific) | |
|---|---|---|
| 1-year return | +53.1% | +29.7% |
| 5-year return | -35.6% | +14.5% |
| Volatility (ann.) | 49.5% | 29.4% |
| Beta vs S&P 500 | 1.35 | 0.74 |
| Max drawdown (3Y) | -50.6% | -37.3% |
| Market cap | $10.3B | $233.2B |
| P/E (trailing) | 252.8 | 34.1 |
| Dividend yield | 0.00% | 0.28% |
| Sector / category | US Listed | Health Care |
Year-by-year returns
| Year | RGEN | TMO |
|---|---|---|
| 2022 | -36.1% | -17.3% |
| 2023 | +6.2% | -3.4% |
| 2024 | -19.9% | -1.7% |
| 2025 | +13.8% | +11.8% |
| 2026 | +11.1% | +9.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RGEN and TMO good diversifiers for each other?
To a limited degree. At 0.65 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 RGEN and TMO?
As of 2026-08-27, the correlation of weekly returns between RGEN and TMO is 0.65 over 3 years, 0.67 over 1 year and 0.66 over 5 years.
Is TMO a good diversifier for RGEN?
To a limited degree. At 0.65 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 0.65 mean?
A reading of 0.65 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/rgen-vs-tmo.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/rgen-vs-tmo/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: RGEN correlations · TMO correlations
