OPXS vs ZJYL: Correlation
How closely do Optex Systems Holdings, Inc. (OPXS) and JIN MEDICAL INTERNATIONAL LTD. - Class A (ZJYL) trade together? Their weekly returns over three years give a correlation of 0.38, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OPXS and ZJYL?
On 3 years of weekly data the OPXS/ZJYL correlation comes out at 0.38, moderate. The link has loosened recently: the 1-year correlation (-0.19) runs below the 3-year figure (0.38). The 5-year figure is n/a, and annualized covariance runs at 6186.8 %².
Few assets follow OPXS as closely as ZJYL, which ranks #2 of 11 tracked partners. Their recent paths diverged sharply: over the last 12 months OPXS outperformed by 81.4 percentage points (-4.3% for OPXS against -85.7% for ZJYL). Risk is not evenly split, since ZJYL carries 4.5 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.
OPXS vs ZJYL: side by side
| OPXS (Optex Systems Holdings, Inc.) | ZJYL (JIN MEDICAL INTERNATIONAL LTD. - Class A) | |
|---|---|---|
| 1-year return | -4.3% | -85.7% |
| 5-year return | +540.0% | n/a |
| Volatility (ann.) | 59.8% | 270.7% |
| Beta vs S&P 500 | 0.67 | 1.23 |
| Max drawdown (3Y) | -45.7% | -99.3% |
| Market cap | $0.1B | $0.2B |
| P/E (trailing) | 19.0 | 13.1 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | OPXS | ZJYL |
|---|---|---|
| 2022 | +57.8% | – |
| 2023 | +122.2% | – |
| 2024 | +4.7% | -93.7% |
| 2025 | +106.7% | -71.7% |
| 2026 | -27.8% | -46.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OPXS and ZJYL good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.38 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between OPXS and ZJYL?
As of 2026-08-27, the correlation of weekly returns between OPXS and ZJYL is 0.38 over 3 years, -0.19 over 1 year and n/a over 5 years.
Is ZJYL a good diversifier for OPXS?
Yes, to a useful degree: a correlation of 0.38 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.38 mean?
A reading of 0.38 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/opxs-vs-zjyl.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/opxs-vs-zjyl/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: OPXS correlations · ZJYL correlations
