COLL vs FLYE: Correlation
How closely do Collegium Pharmaceutical, Inc. (COLL) and Fly-E Group, Inc. (FLYE) trade together? Their weekly returns over three years give a correlation of -0.25, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are COLL and FLYE?
Across a 3-year window, the weekly returns of COLL and FLYE correlate at -0.25, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.22) sits close to the 3-year figure. Stretching to 5 years gives n/a, with an annualized covariance of -1468.7 %².
FLYE is close to the least connected end of COLL's tracked universe, ranking #14 of 15. The last year tells two different stories: COLL led by 57.2 percentage points, -31.8% for COLL against -89.0% for FLYE. One caveat on sizing: FLYE is 4.0 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
COLL vs FLYE: side by side
| COLL (Collegium Pharmaceutical, Inc.) | FLYE (Fly-E Group, Inc.) | |
|---|---|---|
| 1-year return | -31.8% | -89.0% |
| 5-year return | +30.2% | n/a |
| Volatility (ann.) | 38.1% | 153.0% |
| Beta vs S&P 500 | 0.41 | 1.73 |
| Max drawdown (3Y) | -48.4% | -99.8% |
| Market cap | $0.8B | – |
| P/E (trailing) | 20.8 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | COLL | FLYE |
|---|---|---|
| 2022 | +24.2% | – |
| 2023 | +32.7% | – |
| 2024 | -6.9% | – |
| 2025 | +61.6% | -92.1% |
| 2026 | -42.9% | -74.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are COLL and FLYE good diversifiers for each other?
Yes: at -0.25, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between COLL and FLYE?
Using weekly returns as of 2026-08-27: -0.25 over 3 years, with -0.22 over the last year and n/a over 5 years.
Is FLYE a good diversifier for COLL?
Yes: at -0.25, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.25 mean?
A reading of -0.25 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/coll-vs-flye.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/coll-vs-flye/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: COLL correlations · FLYE correlations
