CIEN vs EJH: Correlation
Measured on weekly returns over the past three years, Ciena (CIEN) and E-Home Household Service Holdings Limited (EJH) carry a correlation of -0.26, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CIEN and EJH?
Over the past 3 years, CIEN and EJH moved with a correlation of -0.26, which is negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.27) sits close to the 3-year figure. Over 5 years the correlation is -0.14, and the annualized covariance of weekly returns is -2159.5 %².
Among the 28 assets we track against CIEN, EJH sits near the bottom by co-movement, at rank #25. Their recent paths diverged sharply: over the last 12 months CIEN outperformed by 427.2 percentage points (+331.2% for CIEN against -96.0% for EJH). Risk is not evenly split, since EJH carries 3.3 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.
CIEN vs EJH: side by side
| CIEN (Ciena) | EJH (E-Home Household Service Holdings Limited) | |
|---|---|---|
| 1-year return | +331.2% | -96.0% |
| 5-year return | +598.5% | -100.0% |
| Volatility (ann.) | 50.1% | 167.4% |
| Beta vs S&P 500 | 1.59 | -1.07 |
| Max drawdown (3Y) | -47.3% | -100.0% |
| Market cap | $56.6B | – |
| P/E (trailing) | 133.7 | 0.0 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | CIEN | EJH |
|---|---|---|
| 2022 | -33.8% | -98.5% |
| 2023 | -11.7% | -90.7% |
| 2024 | +88.4% | -99.7% |
| 2025 | +175.8% | -97.6% |
| 2026 | +71.0% | -93.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CIEN and EJH good diversifiers for each other?
Yes. With a correlation of -0.26, CIEN and EJH have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between CIEN and EJH?
The CIEN/EJH correlation stands at -0.26 on a 3-year window (1 year: -0.27, 5 years: -0.14), computed from weekly returns as of 2026-08-27.
Is EJH a good diversifier for CIEN?
Yes. With a correlation of -0.26, CIEN and EJH have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.26 mean?
A reading of -0.26 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/cien-vs-ejh.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/cien-vs-ejh/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CIEN correlations · EJH correlations
