CIEN vs RETO: Correlation
How closely do Ciena (CIEN) and ReTo Eco-Solutions, Inc. - Class A Shares (RETO) trade together? Their weekly returns over three years give a correlation of -0.20, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CIEN and RETO?
On 3 years of weekly data the CIEN/RETO correlation comes out at -0.20, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.19 over 1 year against -0.20 over 3. The 5-year figure is -0.13, and annualized covariance runs at -3958.2 %².
By 3-year correlation, RETO places #20 of the 28 assets tracked against CIEN. The last year tells two different stories: CIEN led by 427.5 percentage points, +331.2% for CIEN against -96.3% for RETO. Note the risk asymmetry: RETO runs 8.0 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 RETO: side by side
| CIEN (Ciena) | RETO (ReTo Eco-Solutions, Inc. - Class A Shares) | |
|---|---|---|
| 1-year return | +331.2% | -96.3% |
| 5-year return | +598.5% | -100.0% |
| Volatility (ann.) | 50.1% | 399.9% |
| Beta vs S&P 500 | 1.59 | -2.83 |
| Max drawdown (3Y) | -47.3% | -99.5% |
| Market cap | $56.6B | – |
| P/E (trailing) | 133.7 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | CIEN | RETO |
|---|---|---|
| 2022 | -33.8% | -75.9% |
| 2023 | -11.7% | -99.1% |
| 2024 | +88.4% | -74.9% |
| 2025 | +175.8% | -57.1% |
| 2026 | +71.0% | -81.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CIEN and RETO good diversifiers for each other?
By historical standards, yes. A correlation of -0.20 means the two rarely move for the same reasons.
FAQ
What is the correlation between CIEN and RETO?
The CIEN/RETO correlation stands at -0.20 on a 3-year window (1 year: -0.19, 5 years: -0.13), computed from weekly returns as of 2026-08-27.
Is RETO a good diversifier for CIEN?
By historical standards, yes. A correlation of -0.20 means the two rarely move for the same reasons.
What does a correlation of -0.20 mean?
On the −1 to +1 scale, -0.20 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/cien-vs-reto.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/cien-vs-reto/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CIEN correlations · RETO correlations
