IDXX vs REPL: Correlation
Idexx Laboratories (IDXX) and Replimune Group, Inc. (REPL) show a negative relationship: their 3-year correlation of weekly returns is -0.19.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IDXX and REPL?
On 3 years of weekly data the IDXX/REPL correlation comes out at -0.19, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.20) sits close to the 3-year figure. The 5-year figure is -0.06, and annualized covariance runs at -911.6 %².
Among the 35 assets we track against IDXX, REPL ranks #28 by 3-year correlation. The last year tells two different stories: REPL led by 197.0 percentage points, -14.9% for IDXX against +182.1% for REPL. Note the risk asymmetry: REPL runs 5.0 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
IDXX vs REPL: side by side
| IDXX (Idexx Laboratories) | REPL (Replimune Group, Inc.) | |
|---|---|---|
| 1-year return | -14.9% | +182.1% |
| 5-year return | -20.7% | -50.4% |
| Volatility (ann.) | 30.9% | 153.7% |
| Beta vs S&P 500 | 1.01 | 0.48 |
| Max drawdown (3Y) | -37.4% | -92.0% |
| Market cap | $42.9B | $1.5B |
| P/E (trailing) | 38.9 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Health Care | US Listed |
Year-by-year returns
| Year | IDXX | REPL |
|---|---|---|
| 2022 | -38.0% | +0.4% |
| 2023 | +36.1% | -69.0% |
| 2024 | -25.5% | +43.7% |
| 2025 | +63.6% | -19.7% |
| 2026 | -19.4% | +60.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IDXX and REPL good diversifiers for each other?
Yes. With a correlation of -0.19, IDXX and REPL have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between IDXX and REPL?
The IDXX/REPL correlation stands at -0.19 on a 3-year window (1 year: -0.20, 5 years: -0.06), computed from weekly returns as of 2026-08-27.
Is REPL a good diversifier for IDXX?
Yes. With a correlation of -0.19, IDXX and REPL have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.19 mean?
On the −1 to +1 scale, -0.19 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/idxx-vs-repl.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/idxx-vs-repl/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: IDXX correlations · REPL correlations
