ACRS vs PRFX: Correlation
How closely do Aclaris Therapeutics, Inc. (ACRS) and PRF Technologies Ltd. (PRFX) trade together? Their weekly returns over three years give a correlation of 0.41, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACRS and PRFX?
Across a 3-year window, the weekly returns of ACRS and PRFX correlate at 0.41, moderate. Lately the two have drifted apart, with the 1-year correlation at -0.09 versus 0.41 over 3 years. Stretching to 5 years gives 0.39, with an annualized covariance of 12715.7 %².
Among the 14 assets we track against ACRS, PRFX ranks #4 by 3-year correlation. Correlation aside, the last 12 months split them widely, with ACRS ahead by 326.2 points (+238.5% versus -87.7%). Note the risk asymmetry: PRFX runs 2.8 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.
ACRS vs PRFX: side by side
| ACRS (Aclaris Therapeutics, Inc.) | PRFX (PRF Technologies Ltd.) | |
|---|---|---|
| 1-year return | +238.5% | -87.7% |
| 5-year return | -60.0% | -99.9% |
| Volatility (ann.) | 105.3% | 291.2% |
| Beta vs S&P 500 | 1.25 | 2.46 |
| Max drawdown (3Y) | -91.9% | -99.3% |
| Market cap | $0.9B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACRS | PRFX |
|---|---|---|
| 2022 | +8.3% | -68.9% |
| 2023 | -93.3% | -33.4% |
| 2024 | +136.2% | -79.7% |
| 2025 | +21.4% | -80.9% |
| 2026 | +104.7% | -69.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACRS and PRFX good diversifiers for each other?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ACRS and PRFX?
Using weekly returns as of 2026-08-27: 0.41 over 3 years, with -0.09 over the last year and 0.39 over 5 years.
Is PRFX a good diversifier for ACRS?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.41 mean?
On the −1 to +1 scale, 0.41 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/acrs-vs-prfx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/acrs-vs-prfx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ACRS correlations · PRFX correlations
