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Lumen TechnologiesSTU:CYTH -4.09%56 Market Cap is €5,836 Mil as of Jul. 14, 2026. GuruFocus rates STU:CYTH with a GF Score™ of 56/100 and a GF Value™ of €3.36 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 372 Telecommunication Services companies, Lumen Technologies ranks better than 80.38% on this metric.
Market cap is the total market value to buy the whole company. It is equal to the share price times the number of Shares Outstanding (EOP). Lumen Technologies's share price for the quarter that ended in Mar. 2026 was €6.013. Lumen Technologies's Shares Outstanding (EOP) for the quarter that ended in Mar. 2026 was 1,030 Mil. Therefore, Lumen Technologies's market cap for the quarter that ended in Mar. 2026 was €6,193 Mil.
Lumen Technologies's quarterly market cap
increased
from Sep. 2025 (€5,104 Mil) to Dec. 2025 (€6,510 Mil) but then
declined
from Dec. 2025 (€6,510 Mil) to Mar. 2026 (€6,193 Mil).
Lumen Technologies's annual market cap
increased
from Dec. 2023 (€1,659 Mil) to Dec. 2024 (€5,244 Mil) and
increased
from Dec. 2024 (€5,244 Mil) to Dec. 2025 (€6,510 Mil).
Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. Lumen Technologies's Enterprise Value for Today is €16,044 Mil.
Lumen Technologies (STU:CYTH) Market Cap Explanation
Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the companys debt. The real price you pay is the Enterprise Value.
Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.
Lumen Technologies Market Cap Related Terms
Lumen Technologies Market Cap Historical Data
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The historical data trend for Lumen Technologies's Market Cap 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.
STU:CYTH vs GSAT, IRDM, LBRDA: Market Cap Comparison
For the Telecom Services subindustry, Lumen Technologies's Market Cap, along with its competitors' market caps and Market Cap 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 Market Cap vs Telecommunication Services Industry
For the Telecommunication Services industry and Communication Services sector, Lumen Technologies's Market Cap distribution charts can be found below:
* The bar in red indicates where Lumen Technologies's Market Cap falls into.
Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.
Lumen Technologies's Market Cap for the fiscal year that ended in Dec. 2025 is calculated as
* 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 (STU:CYTH) has a Market Cap of €5,836 Mil as of Jul. 14, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Lumen Technologies and its competitors. According to the industry distribution chart, Lumen Technologies ranks #73 out of 372 companies in the Telecommunication Services industry, placing it in the top 19.6%.
Is Lumen Technologies' Market Cap too high?
Lumen Technologies' current Market Cap is €5,836 Mil. Based on the distribution chart, Lumen Technologies ranks #73 out of 372 companies in the Telecommunication Services industry, which is in the top quartile — a strong position relative to peers. Overall, Lumen Technologies has a GF Score™ of 56/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Lumen Technologies' Market Cap compare to GSAT and IRDM?
According to the Telecommunication Services industry distribution chart, Lumen Technologies ranks #73 out of 372 companies for Market Cap. This places Lumen Technologies in the top 20% of its industry — outperforming the majority of peers. The industry median Market Cap is 494.01. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Market Cap for a Telecommunication Services company?
The median Market Cap among Telecommunication Services companies is 494.01, based on 372 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap 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 Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Lumen Technologies and its competitors. For the Telecommunication Services industry, the median Market Cap is 494.01 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Lumen Technologies's current Market Cap is €5,836 Mil. 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 (STU:CYTH) is currently considered Significantly Overvalued. The stock's GF Value™ is €3.36, compared to a current price of €5.63 — trading 67.6% above its estimated fair value. The current Market Cap is €5,836 Mil. Lumen Technologies' overall GF Score™ is 56/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For Lumen Technologies (STU:CYTH), the current Market Cap is €5,836 Mil as of Jul. 14, 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 (STU:CYTH) Overvalued in 2026?
Based on GuruFocus' analysis, Lumen Technologies stock appears to be overvalued.
The current stock price of €5.63 is trading 67.6% above its estimated GF Value™ of €3.36.
GuruFocus considers Lumen Technologies to be Significantly Overvalued.
Key valuation signals for STU:CYTH:
Market Cap: €5,836 Mil
GF Value™: €3.36 vs. price of €5.63 (67.6% above fair value)
No single metric tells the full story. See the STU: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.
56GF Score
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