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Graham Number is a figure that measures a stock's fundamental value by taking into account the company's earnings per share and book value per share. The Graham number is the upper bound of the price range that a defensive investor should pay for the stock. According to the theory, any stock price below the Graham number is considered undervalued, and thus worth investing in.
As of today (2026-08-05), the stock price of Lumen Technologies is €5.59. Lumen Technologies's graham number for the quarter that ended in Jun. 2026 was €N/A. Therefore, Lumen Technologies's Price to Graham Number ratio for today is N/A.
The historical rank and industry rank for Lumen Technologies's Graham Number or its related term are showing as below:
FRA:CYTH's Price-to-Graham-Number is not ranked *
in the Telecommunication Services industry.
Industry Median: 1.585 * Ranked among companies with meaningful Price-to-Graham-Number only.
Graham Number is a combination of asset valuation and earnings power valuation. It is a very conservative way of valuing a stock.
Lumen Technologies (FRA:CYTH) Graham Number Explanation
Ben Graham actually did not publish a formula like this. But he wrote in The Intelligent Investor (1948 version) regarding to the criteria for purchases:
Current price should not be more than 15 times average earnings of the past three years.
Current price should not be more than 1.5 times the book value last reported. However, a multiplier of earnings below 15 could justify a correspondingly higher multiplier of assets. As a rule of thumb we suggest that the product of the multiplier times the ratio of price to book value should not exceed 22.5. (This figure corresponds to 15 times earnings and 1.5 times book value. It would admit an issue selling at only 9 times earnings and 2.5 times asset value, etc.)
Unlike valuation methods such as DCF or Discounted Earnings, the Graham number does not take growth into the valuation. Unlike the valuation methods based on book value alone, it takes into account the earnings power. Therefore, the Graham Number is a combination of asset valuation and earnings power valuation.
In general, the Graham number is a very conservative way of valuing a stock. It cannot be applied to companies with negative book values.
Lumen Technologies's Price to Graham number Ratio for today is calculated as
Price to Graham number
=
Share Price (Today)
/
Graham number (Q: Jun. 2026 )
=
5.59
/
N/A
=
N/A
* 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.
Be Aware
Please keep these in mind:
1. Graham Number does not take growth into account. Therefore it underestimates the values of the companies that have good earnings growth. We feel that if the earnings per share grows more than 10% a year, Graham Number underestimates the value.
2. Graham Number punishes the companies that have temporarily low earnings. Therefore, an average of earnings makes more sense in the calculation of Graham Number.
3. Graham Numbers underestimates companies that are light with book.
Lumen Technologies Graham Number Related Terms
Lumen Technologies Graham Number Historical Data
* Premium members only.
The historical data trend for Lumen Technologies's Graham Number 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.
FRA:CYTH vs IRDM, LBRDA, TDS: Graham Number Comparison
For the Telecom Services subindustry, Lumen Technologies's Price-to-Graham-Number, along with its competitors' market caps and Price-to-Graham-Number 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.
Lumen Technologies Price-to-Graham-Number vs Telecommunication Services Industry
For the Telecommunication Services industry and Communication Services sector, Lumen Technologies's Price-to-Graham-Number distribution charts can be found below:
* The bar in red indicates where Lumen Technologies's Price-to-Graham-Number falls into.
* 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.
Lumen Technologies (FRA:CYTH) has a Graham Number of €N/A as of Jun. 2026. The Graham Number values a company based on its per-share earnings and book value. View historical data on Lumen Technologies and its competitors. According to the industry distribution chart, Lumen Technologies ranks #999999 out of 194 companies in the Telecommunication Services industry.
Is Lumen Technologies' Graham Number too high?
Lumen Technologies' current Graham Number is €N/A. Based on the distribution chart, Lumen Technologies ranks #999999 out of 194 companies in the Telecommunication Services industry, which is in the bottom quartile relative to peers. Overall, Lumen Technologies has a GF Score™ of 53/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Lumen Technologies' Graham Number compare to IRDM and LBRDA?
According to the Telecommunication Services industry distribution chart, Lumen Technologies ranks #999999 out of 194 companies for Graham Number. This places Lumen Technologies in the lower half of its industry. The industry median Graham Number is 1.59. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Graham Number for a Telecommunication Services company?
The median Graham Number among Telecommunication Services companies is 1.59, based on 194 companies in the industry. Companies in the top quartile (top 25%) have a Graham Number significantly above this median, while those in the bottom quartile fall well below. However, Graham Number 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 Graham Number mean?
A high Graham Number can signal that a stock is expensive relative to its fundamentals. The Graham Number values a company based on its per-share earnings and book value. View historical data on Lumen Technologies and its competitors. For the Telecommunication Services industry, the median Graham Number is 1.59 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Lumen Technologies's current Graham Number is €N/A. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Lumen Technologies stock overvalued right now?
Based on GuruFocus' analysis, Lumen Technologies (FRA:CYTH) is currently considered Significantly Overvalued. The stock's GF Value™ is €3.09, compared to a current price of €5.59 — trading 80.9% above its estimated fair value. The current Graham Number is €N/A. Lumen Technologies' overall GF Score™ is 53/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Graham Number calculated?
Graham Number is calculated from a company's financial statements. For Lumen Technologies (FRA:CYTH), the current Graham Number is €N/A as of Jun. 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 Lumen Technologies (FRA:CYTH) Overvalued in 2026?
Based on GuruFocus' analysis, Lumen Technologies stock appears to be overvalued.
The current stock price of €5.59 is trading 80.9% above its estimated GF Value™ of €3.09.
GuruFocus considers Lumen Technologies to be Significantly Overvalued.
Key valuation signals for FRA:CYTH:
Graham Number: €N/A
GF Value™: €3.09 vs. price of €5.59 (80.9% above fair value)
No single metric tells the full story. See the FRA:CYTH stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Lumen Technologies is one of the largest telecommunications carriers serving global enterprises. The merger with Level 3 in 2017, the 2022 divestiture of much of its local phone business in rural areas, and the 2026 sale of its remaining consumer fiber network to AT&T have shifted the company's operations away from the legacy consumer business and toward enterprise services, which account for about 85%-90% of revenue. Lumen offers businesses a full suite of communications services, providing colocation and data center services, data transportation, phone service, and internet access.
53GF Score
Get the complete analysis for FRA:CYTH
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