ARKK vs KOPN: Correlation
How closely do ARK Innovation ETF (ARKK) and Kopin Corporation (KOPN) trade together? Their weekly returns over three years give a correlation of 0.46, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARKK and KOPN?
Over the past 3 years, ARKK and KOPN moved with a correlation of 0.46, which is moderate. Recent behaviour matches the longer record: 0.54 over 1 year against 0.46 over 3. Over 5 years the correlation is 0.44, and the annualized covariance of weekly returns is 1726.5 %².
Within ARKK's tracked universe of 122 assets, KOPN comes in at #87 by 3-year correlation. Correlation aside, the last 12 months split them widely, with KOPN ahead by 107.4 points (+15.7% versus +123.1%). Risk is not evenly split, since KOPN carries 2.5 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.
ARKK vs KOPN: side by side
| ARKK (ARK Innovation ETF) | KOPN (Kopin Corporation) | |
|---|---|---|
| 1-year return | +15.7% | +123.1% |
| 5-year return | -27.7% | -19.9% |
| Volatility (ann.) | 38.8% | 96.8% |
| Beta vs S&P 500 | 2.07 | 2.59 |
| Max drawdown (3Y) | -39.6% | -78.3% |
| Market cap | – | $0.9B |
| P/E (trailing) | – | 120.5 |
| Dividend yield | – | 0.00% |
| Sector / category | ETF · Thematic | US Listed |
Year-by-year returns
| Year | ARKK | KOPN |
|---|---|---|
| 2022 | -67.0% | -69.7% |
| 2023 | +69.0% | +63.7% |
| 2024 | +8.4% | -33.0% |
| 2025 | +35.5% | +72.1% |
| 2026 | +13.6% | +106.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARKK and KOPN good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ARKK and KOPN?
As of 2026-08-27, the correlation of weekly returns between ARKK and KOPN is 0.46 over 3 years, 0.54 over 1 year and 0.44 over 5 years.
Is KOPN a good diversifier for ARKK?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.46 mean?
A reading of 0.46 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
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Related comparisons
Hubs: ARKK correlations · KOPN correlations
