BGI vs REPL: Correlation
Birks Group Inc. (BGI) and Replimune Group, Inc. (REPL) show a negative relationship: their 3-year correlation of weekly returns is -0.26.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BGI and REPL?
Over the past 3 years, BGI and REPL moved with a correlation of -0.26, which is negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.29 over 1 year against -0.26 over 3. Over 5 years the correlation is -0.18, and the annualized covariance of weekly returns is -2558.3 %².
Out of 10 assets tracked against BGI, REPL lands near the bottom at #10. Their recent paths diverged sharply: over the last 12 months REPL outperformed by 233.5 percentage points (-51.4% for BGI against +182.1% for REPL). Note the risk asymmetry: REPL runs 2.4 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.
BGI vs REPL: side by side
| BGI (Birks Group Inc.) | REPL (Replimune Group, Inc.) | |
|---|---|---|
| 1-year return | -51.4% | +182.1% |
| 5-year return | -88.1% | -50.4% |
| Volatility (ann.) | 64.1% | 153.7% |
| Beta vs S&P 500 | 0.38 | 0.48 |
| Max drawdown (3Y) | -93.1% | -92.0% |
| Market cap | – | $1.5B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BGI | REPL |
|---|---|---|
| 2022 | +63.5% | +0.4% |
| 2023 | -40.9% | -69.0% |
| 2024 | -65.7% | +43.7% |
| 2025 | -44.1% | -19.7% |
| 2026 | -61.1% | +60.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BGI and REPL good diversifiers for each other?
Yes: at -0.26, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between BGI and REPL?
The BGI/REPL correlation stands at -0.26 on a 3-year window (1 year: -0.29, 5 years: -0.18), computed from weekly returns as of 2026-08-27.
Is REPL a good diversifier for BGI?
Yes: at -0.26, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.26 mean?
On the −1 to +1 scale, -0.26 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/bgi-vs-repl.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/bgi-vs-repl/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BGI correlations · REPL correlations
