ARKR vs RKDA: Correlation
Measured on weekly returns over the past three years, Ark Restaurants Corp. (ARKR) and Arcadia Biosciences, Inc. (RKDA) carry a correlation of 0.39, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARKR and RKDA?
On 3 years of weekly data the ARKR/RKDA correlation comes out at 0.39, moderate. The past 12 months show a weaker link (-0.11) than the 3-year average (0.39). The 5-year figure is 0.31, and annualized covariance runs at 1994.5 %².
Within ARKR's tracked universe of 14 assets, RKDA comes in at #6 by 3-year correlation. Correlation aside, the last 12 months split them widely, with ARKR ahead by 63.8 points (-22.8% versus -86.6%). One caveat on sizing: RKDA is 2.0 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.
ARKR vs RKDA: side by side
| ARKR (Ark Restaurants Corp.) | RKDA (Arcadia Biosciences, Inc.) | |
|---|---|---|
| 1-year return | -22.8% | -86.6% |
| 5-year return | -64.1% | -99.5% |
| Volatility (ann.) | 50.4% | 100.4% |
| Beta vs S&P 500 | 0.34 | 1.40 |
| Max drawdown (3Y) | -70.3% | -93.4% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ARKR | RKDA |
|---|---|---|
| 2022 | +0.4% | -73.9% |
| 2023 | -11.5% | -71.1% |
| 2024 | -19.8% | +89.1% |
| 2025 | -39.0% | -66.6% |
| 2026 | -21.3% | -74.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARKR and RKDA good diversifiers for each other?
Reasonably. At 0.39, ARKR and RKDA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between ARKR and RKDA?
Using weekly returns as of 2026-08-27: 0.39 over 3 years, with -0.11 over the last year and 0.31 over 5 years.
Is RKDA a good diversifier for ARKR?
Reasonably. At 0.39, ARKR and RKDA keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.39 mean?
A reading of 0.39 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/arkr-vs-rkda.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/arkr-vs-rkda/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ARKR correlations · RKDA correlations
