Ciena (MEX:CIEN) Shares Buyback Ratio %: 0.06 (As of Sep. 01, 2026)

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MEX:CIEN Ciena Corp MEX:CIEN
68 GF Score
Price MXN6,504.00
GF Value MXN1,631.56
Valuation Significantly Overvalued
! 4 Warning Signs
View Full Analysis

What is Ciena Shares Buyback Ratio %?

Ciena MEX:CIEN 68 Shares Buyback Ratio % is 0.06 as of Sep. 01, 2026. GuruFocus rates MEX:CIEN with a GF Score™ of 68/100 and a GF Value™ of MXN1,631.56 (Significantly Overvalued). The stock has 4 warning signs investors should review.

Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.

GuruFocus calculates shares buyback ratio using previous shares outstanding minus the current shares outstanding, and then divides by previous shares outstanding. Ciena's current shares buyback ratio was 0.06%.

Ciena Shares Buyback Ratio % Related Terms

Ciena Shares Buyback Ratio % Historical Data

* Premium members only.

The historical data trend for Ciena's Shares Buyback Ratio % 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 Shares Buyback Ratio % Chart

Ciena Annual Data
Trend Oct16 Oct17 Oct18 Oct19 Oct20 Oct21 Oct22 Oct23 Oct24 Oct25
Shares Buyback Ratio %
Get a 7-Day Free Trial Premium Member Only Premium Member Only -0.19 4.16 2.41 1.50 1.15

Ciena Quarterly Data
Jul21 Oct21 Jan22 Apr22 Jul22 Oct22 Jan23 Apr23 Jul23 Oct23 Jan24 Apr24 Jul24 Oct24 Jan25 Apr25 Jul25 Oct25 Jan26 Apr26
Shares Buyback Ratio % 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 0.59 0.24 0.23 -0.31 -0.10
MEX:CIEN
68GF Score
Ciena Corp MEX:CIEN
Shares Buyback Ratio % is just one metric. See GF Score™, valuation, warning signs, and more.
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Ciena Shares Buyback Ratio % Calculation

Ciena's Shares Buyback Ratio for the fiscal year that ended in Oct. 2025 is calculated as

Shares Buyback Ratio=(Shares Outstanding (EOP) (A: Oct. 2024 ) - Shares Outstanding (EOP) (A: Oct. 2025 )) / Shares Outstanding (EOP) (A: Oct. 2024 )
=(142.656 - 141.016) / 142.656
=1.15%

Ciena's Shares Buyback Ratio for the quarter that ended in Apr. 2026 is calculated as

Shares Buyback Ratio=(Shares Outstanding (EOP) (A: Jan. 2026 ) - Shares Outstanding (EOP) (A: Apr. 2026 )) / Shares Outstanding (EOP) (A: Jan. 2026 )
=(141.453 - 141.598) / 141.453
=-0.10%

* 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.

Frequently Asked Questions Learn more about Shares Buyback Ratio % →
What does a Shares Buyback Ratio % of 0.06 mean?
Ciena (MEX:CIEN) has a Shares Buyback Ratio % of 0.06 as of Sep. 01, 2026. Share buyback ratio is the percent change of a company's shares outstanding from two periods. View historical data on Ciena and its competitors.
Is Ciena's Shares Buyback Ratio % too high?
Ciena's current Shares Buyback Ratio % is 0.06. Overall, Ciena has a GF Score™ of 68/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Ciena's Shares Buyback Ratio % compare to HPE and UI?
Ciena's Shares Buyback Ratio % of 0.06 can be compared against companies in the Hardware industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shares Buyback Ratio % for a Hardware company?
A good Shares Buyback Ratio % depends on the Hardware industry context. However, Shares Buyback Ratio % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shares Buyback Ratio % mean?
A high Shares Buyback Ratio % can signal that a stock is expensive relative to its fundamentals. Share buyback ratio is the percent change of a company's shares outstanding from two periods. View historical data on Ciena and its competitors. Ciena's current Shares Buyback Ratio % is 0.06. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ciena stock overvalued right now?
Based on GuruFocus' analysis, Ciena (MEX:CIEN) is currently considered Significantly Overvalued. The stock's GF Value™ is MXN1,631.56, compared to a current price of MXN6,504.00 — trading 298.6% above its estimated fair value. The current Shares Buyback Ratio % is 0.06. Ciena's overall GF Score™ is 68/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shares Buyback Ratio % calculated?
Shares Buyback Ratio % is calculated from a company's financial statements. For Ciena (MEX:CIEN), the current Shares Buyback Ratio % is 0.06 as of Sep. 01, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Ciena (MEX:CIEN) Overvalued in 2026?

Based on GuruFocus' analysis, Ciena stock appears to be overvalued. The current stock price of MXN6,504.00 is trading 298.6% above its estimated GF Value™ of MXN1,631.56. GuruFocus considers Ciena to be Significantly Overvalued.

Key valuation signals for MEX:CIEN:

  • Shares Buyback Ratio %: 0.06
  • GF Value™: MXN1,631.56 vs. price of MXN6,504.00 (298.6% above fair value)
  • GF Score™: 68/100 with 4 warning signs

No single metric tells the full story. See the MEX:CIEN 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.
68GF Score

Get the complete analysis for MEX:CIEN

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

MXN6,504.00
Price
MXN1,631.56
GF Value