BCRX vs GRPN: Correlation
Measured on weekly returns over the past three years, BioCryst Pharmaceuticals, Inc. (BCRX) and Groupon, Inc. (GRPN) carry a correlation of 0.44, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BCRX and GRPN?
On 3 years of weekly data the BCRX/GRPN correlation comes out at 0.44, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.24 versus 0.44 over 3 years. The 5-year figure is 0.30, and annualized covariance runs at 1896.7 %².
Few assets follow BCRX as closely as GRPN, which ranks #2 of 11 tracked partners. Correlation aside, the last 12 months split them widely, with BCRX ahead by 41.6 points (+15.8% versus -25.8%). Note the risk asymmetry: GRPN runs 1.9 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.
BCRX vs GRPN: side by side
| BCRX (BioCryst Pharmaceuticals, Inc.) | GRPN (Groupon, Inc.) | |
|---|---|---|
| 1-year return | +15.8% | -25.8% |
| 5-year return | -37.1% | -17.9% |
| Volatility (ann.) | 47.1% | 91.7% |
| Beta vs S&P 500 | 0.75 | 1.87 |
| Max drawdown (3Y) | -46.0% | -74.2% |
| Market cap | $2.5B | $0.8B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BCRX | GRPN |
|---|---|---|
| 2022 | -17.1% | -63.0% |
| 2023 | -47.8% | +49.7% |
| 2024 | +25.5% | -5.4% |
| 2025 | +3.7% | +44.9% |
| 2026 | +26.5% | +10.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BCRX and GRPN good diversifiers for each other?
Reasonably. At 0.44, BCRX and GRPN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BCRX and GRPN?
Using weekly returns as of 2026-08-27: 0.44 over 3 years, with 0.24 over the last year and 0.30 over 5 years.
Is GRPN a good diversifier for BCRX?
Reasonably. At 0.44, BCRX and GRPN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.44 mean?
A reading of 0.44 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/bcrx-vs-grpn.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bcrx-vs-grpn/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BCRX correlations · GRPN correlations
