Ciena (MIL:1CIEN) Beta: N/A (As of Jul. 06, 2026)


MIL:1CIEN Ciena Corp MIL:1CIEN
53 GF Score
Price €385.20
GF Value €80.18
Valuation Significantly Overvalued
! 4 Warning Signs
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What is Ciena Beta?

Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. As of today (2026-07-06), Ciena's Beta is Not available.

Ciena  (MIL:1CIEN) Beta Explanation

Beta is a measure of the volatility, or systematic risk, of a security or a portfolio in comparison to the market as a whole. We usually compare beta to 1. A beta of 1 indicates that the security's price will move with the market. A beta of less than 1 means that the security will be less volatile than the market. A beta of greater than 1 indicates that the security's price will be more volatile than the market.

Beta is primarily used in the Capital Asset Pricing Model (CAPM) to calculate the Cost of Equity, which can be used in the calculation of WACC %. The formula of Cost of Equity is:
Cost of Equity = Risk-Free Rate of Return + Beta of Asset * (Expected Return of the Market - Risk-Free Rate of Return)

Ciena Beta Related Terms

Ciena Beta Historical Data

* Premium members only.

The historical data trend for Ciena's Beta can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Ciena Beta Chart

Ciena Annual Data
Trend Oct16 Oct17 Oct18 Oct19 Oct20 Oct21 Oct22 Oct23 Oct24 Oct25
Beta
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

Ciena Quarterly Data
Jul21 Oct21 Jan22 Apr22 Jul22 Oct22 Jan23 Apr23 Jul23 Oct23 Jan24 Apr24 Jul24 Oct24 Jan25 Apr25 Jul25 Oct25 Jan26 Apr26
Beta Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00
MIL:1CIEN
53GF Score
Ciena Corp MIL:1CIEN
Beta is just one metric. See GF Score™, valuation, warning signs, and more.
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Ciena Beta Calculation

Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. A stock's beta can be calculated by dividing the product of the covariance of the individual stock's returns and the market's returns by the variance of the market's returns over a specified period. Basically, GuruFocus uses the returns calculated over three-year period.

Is Ciena (MIL:1CIEN) Overvalued in 2026?

Based on GuruFocus' analysis, Ciena stock appears to be overvalued. The current stock price of €385.20 is trading 380.4% above its estimated GF Value™ of €80.18. GuruFocus considers Ciena to be Significantly Overvalued.

Key valuation signals for MIL:1CIEN:

  • Beta: N/A
  • GF Value™: €80.18 vs. price of €385.20 (380.4% above fair value)
  • GF Score™: 53/100 with 4 warning signs

No single metric tells the full story. See the MIL:1CIEN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Ciena Business Description

Address 7035 Ridge Road, Hanover, MD, USA, 21076
Ciena is a leader in high-speed optical connectivity, providing systems, components, and automation software for telecom providers and enterprises, such as data centers, to enable long-distance connectivity. The company operates through four primary business segments: networking platforms, platform software and services, Blue Planet automation software, and global services. While telecom carriers remain important customers, cloud providers and hyperscalers now drive a significant portion of the business. To meet the demands of AI data centers, customers are adopting Ciena's WaveLogic 6 platform, the first to support 1.6 terabits-per-second capacity.
53GF Score

Get the complete analysis for MIL:1CIEN

Beta is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€385.20
Price
€80.18
GF Value