ARTL vs PROK: Correlation
Measured on weekly returns over the past three years, Artelo Biosciences, Inc. (ARTL) and ProKidney Corp. - Class A (PROK) carry a correlation of 0.57, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARTL and PROK?
Across a 3-year window, the weekly returns of ARTL and PROK correlate at 0.57, moderate. The link has loosened recently: the 1-year correlation (-0.25) runs below the 3-year figure (0.57). Stretching to 5 years gives 0.50, with an annualized covariance of 28673.3 %².
PROK is one of the assets that tracks ARTL most closely: it ranks #2 out of the 21 assets we track against ARTL. Correlation aside, the last 12 months split them widely, with PROK ahead by 70.7 points (-97.6% versus -26.9%). Risk is not evenly split, since PROK carries 2.7 times the volatility of the other side.
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.
ARTL vs PROK: side by side
| ARTL (Artelo Biosciences, Inc.) | PROK (ProKidney Corp. - Class A) | |
|---|---|---|
| 1-year return | -97.6% | -26.9% |
| 5-year return | -99.7% | -81.3% |
| Volatility (ann.) | 136.9% | 368.1% |
| Beta vs S&P 500 | -0.54 | 2.21 |
| Max drawdown (3Y) | -99.2% | -94.3% |
| Market cap | – | $0.7B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ARTL | PROK |
|---|---|---|
| 2022 | -62.9% | -30.7% |
| 2023 | -51.6% | -74.1% |
| 2024 | -24.3% | -5.1% |
| 2025 | -80.8% | +32.5% |
| 2026 | -81.9% | -18.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARTL and PROK good diversifiers for each other?
Only partially. A correlation of 0.57 means ARTL and PROK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between ARTL and PROK?
The ARTL/PROK correlation stands at 0.57 on a 3-year window (1 year: -0.25, 5 years: 0.50), computed from weekly returns as of 2026-08-27.
Is PROK a good diversifier for ARTL?
Only partially. A correlation of 0.57 means ARTL and PROK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.57 mean?
A reading of 0.57 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/artl-vs-prok.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/artl-vs-prok/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ARTL correlations · PROK correlations
