CLPR vs OPTX: Correlation
Clipper Realty Inc. (CLPR) and Syntec Optics Holdings, Inc. (OPTX) show a moderate relationship: their 3-year correlation of weekly returns is 0.40.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CLPR and OPTX?
On 3 years of weekly data the CLPR/OPTX correlation comes out at 0.40, moderate. The past 12 months show a weaker link (0.28) than the 3-year average (0.40). The 5-year figure is 0.36, and annualized covariance runs at 3508.5 %².
Few assets follow CLPR as closely as OPTX, which ranks #2 of 12 tracked partners. Correlation aside, the last 12 months split them widely, with OPTX ahead by 463.7 points (-14.6% versus +449.1%). One caveat on sizing: OPTX is 4.2 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.
CLPR vs OPTX: side by side
| CLPR (Clipper Realty Inc.) | OPTX (Syntec Optics Holdings, Inc.) | |
|---|---|---|
| 1-year return | -14.6% | +449.1% |
| 5-year return | -40.2% | -11.3% |
| Volatility (ann.) | 45.5% | 192.0% |
| Beta vs S&P 500 | 0.61 | 1.00 |
| Max drawdown (3Y) | -52.3% | -93.0% |
| Market cap | $0.1B | $0.4B |
| P/E (trailing) | – | – |
| Dividend yield | 11.31% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CLPR | OPTX |
|---|---|---|
| 2022 | -32.7% | – |
| 2023 | -9.5% | -49.7% |
| 2024 | -7.9% | -49.9% |
| 2025 | -8.0% | +13.5% |
| 2026 | -3.0% | +205.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CLPR and OPTX good diversifiers for each other?
Reasonably. At 0.40, CLPR and OPTX keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between CLPR and OPTX?
The CLPR/OPTX correlation stands at 0.40 on a 3-year window (1 year: 0.28, 5 years: 0.36), computed from weekly returns as of 2026-08-27.
Is OPTX a good diversifier for CLPR?
Reasonably. At 0.40, CLPR and OPTX keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.40 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/clpr-vs-optx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/clpr-vs-optx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CLPR correlations · OPTX correlations
