Ciena (MIL:1CIEN) GF Score: 55/100 (As of Jul. 07, 2026) — Near Median


MIL:1CIEN Ciena Corp MIL:1CIEN
55 GF Score
Price €385.20
GF Value €80.24
Valuation Significantly Overvalued
! 4 Warning Signs
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What is Ciena GF Score?

Ciena MIL:1CIEN +1.45% 55 GF Score is 55 as of Jul. 07, 2026, which is 4% above its 10-year median of 53.00. GuruFocus rates MIL:1CIEN with a GF Score™ of 55/100 and a GF Value™ of €80.24 (Significantly Overvalued). The stock has 4 warning signs investors should review.

Ciena has the GF Score of 55, which implies that the company might have Poor future performance potential.

The GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation, which has been found to be closely correlated to the long-term performances of stocks by backtesting from 2006 to 2021. The stocks with a higher GF Score generally generate higher returns than those with lower GF Scores. Therefore, when picking stocks, investors should invest in companies with high GF Scores. The GF Score ranges from 0 to 100, with 100 as the highest rank.

GF Score takes following five key aspects into consideration:

1. Financial Strength : 8/10
2. Profitability Rank : 7/10
3. Growth Rank : 8/10
4. GF Value Rank : 1/10
5. Momentum Rank : 0/10

Each one of these components is ranked and the ranks also have positive correlation with the long term performances of stocks. The GF score is calculated using the five key aspects of analysis. Through backtesting, we know that each of these key aspects has a different impact on the stock price performance. Thus, they are weighted differently when calculating the total score. The Profitability Rank and the Growth Rank are weighted fully, while other parameters have less weight.

Based on research and backtesting result, GuruFocus believes Ciena might have Poor future performance potential.

Please click GF Score to see more details on the GF Score's 5 Key Aspects of Analysis.

Ciena  (MIL:1CIEN) GF Score Explanation

Based on the historical long-term performances among five valuation aspects, the GF Score is found to be closely correlated to the long-term performances of stocks. It ranges from 0 to 100, with 100 as the highest. GuruFocus divided GF Score into following 5 categories:

GF Score Performance Potential and All-in-One Screener Examples (1)
91 - 100Highest outperformance potential
81 - 90Good outperformance potential
71 - 80Likely to have average performance
51 - 70Poor future performance potential
0 - 50Worst future performance potential, or not enough data

(1) These are some simple examples. You can access our GF Score filter under All-in-One Screener’s Fundamental tab.

Ciena GF Score Related Terms

MIL:1CIEN vs MSI, LITE, HPE: GF Score Comparison

For the Communication Equipment subindustry, Ciena's GF Score, along with its competitors' market caps and GF Score data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.

Ciena GF Score vs Hardware Industry

For the Hardware industry and Technology sector, Ciena's GF Score distribution charts can be found below:

* The bar in red indicates where Ciena's GF Score falls into.


MIL:1CIEN
55GF Score
Ciena Corp MIL:1CIEN
GF Score is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions Learn more about GF Score →
What does a GF Score of 55 mean?
Ciena (MIL:1CIEN) has a GF Score of 55 as of Jul. 07, 2026. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on Ciena and its competitors. This is near median its historical median of 53.00. Over the past decade, Ciena's GF Score has ranged from 37.00 to 87.00.
Is Ciena's GF Score too high?
Ciena's current GF Score of 55 is near median its 10-year median of 53.00. Over the past 10 years, this metric has ranged from a low of 37.00 to a high of 87.00. Overall, Ciena has a GF Score™ of 55/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Ciena's GF Score compare to MSI and LITE?
Ciena's GF Score of 55 can be compared against companies in the Hardware industry. Historically, Ciena's own GF Score has ranged from 37.00 to 87.00 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good GF Score for a Hardware company?
A good GF Score depends on the Hardware industry context. However, GF Score 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 GF Score mean?
A high GF Score can signal that a stock is expensive relative to its fundamentals. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on Ciena and its competitors. Ciena's current GF Score is 55, which is near median its own 10-year median of 53.00. 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 (MIL:1CIEN) is currently considered Significantly Overvalued. The stock's GF Value™ is €80.24, compared to a current price of €385.20 — trading 380.1% above its estimated fair value. The current GF Score is 55, which is near median its 10-year median of 53.00. Ciena's overall GF Score™ is 55/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is GF Score calculated?
GF Score is calculated from a company's financial statements. For Ciena (MIL:1CIEN), the current GF Score is 55 as of Jul. 07, 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 (MIL:1CIEN) Overvalued in 2026?

Based on GuruFocus' analysis, Ciena stock appears to be overvalued. The current stock price of €385.20 is trading 380.1% above its estimated GF Value™ of €80.24. GuruFocus considers Ciena to be Significantly Overvalued.

Key valuation signals for MIL:1CIEN:

  • GF Score: 55 (near median its 10-year median of 53.00)
  • GF Value™: €80.24 vs. price of €385.20 (380.1% above fair value)
  • GF Score™: 55/100 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.
55GF Score

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

€385.20
Price
€80.24
GF Value