ARKR vs TGEN: Correlation
How closely do Ark Restaurants Corp. (ARKR) and Tecogen Inc. (TGEN) trade together? Their weekly returns over three years give a correlation of 0.42, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARKR and TGEN?
Across a 3-year window, the weekly returns of ARKR and TGEN correlate at 0.42, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.06 versus 0.42 over 3 years. Stretching to 5 years gives 0.38, with an annualized covariance of 2266.3 %².
Among the 14 assets we track against ARKR, TGEN ranks #4 by 3-year correlation. The last year tells two different stories: ARKR led by 37.0 percentage points, -22.8% for ARKR against -59.8% for TGEN. Risk is not evenly split, since TGEN carries 2.1 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.
ARKR vs TGEN: side by side
| ARKR (Ark Restaurants Corp.) | TGEN (Tecogen Inc.) | |
|---|---|---|
| 1-year return | -22.8% | -59.8% |
| 5-year return | -64.1% | +76.1% |
| Volatility (ann.) | 50.4% | 106.2% |
| Beta vs S&P 500 | 0.34 | 1.92 |
| Max drawdown (3Y) | -70.3% | -83.4% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ARKR | TGEN |
|---|---|---|
| 2022 | +0.4% | +4.2% |
| 2023 | -11.5% | -35.2% |
| 2024 | -19.8% | +80.9% |
| 2025 | -39.0% | +237.2% |
| 2026 | -21.3% | -35.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARKR and TGEN good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ARKR and TGEN?
Using weekly returns as of 2026-08-27: 0.42 over 3 years, with 0.06 over the last year and 0.38 over 5 years.
Is TGEN a good diversifier for ARKR?
Yes, to a useful degree: a correlation of 0.42 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.42 mean?
A reading of 0.42 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-tgen.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/arkr-vs-tgen/)
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Related comparisons
Hubs: ARKR correlations · TGEN correlations
