SUMCO (TSE:3436) Shares Outstanding (Basic Average): 350 Mil (As of Dec. 2025)


TSE:3436 SUMCO Corp TSE:3436
62 GF Score
Price 円3,711.00
GF Value 円1,788.02
Valuation Significantly Overvalued
! 9 Warning Signs
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What is SUMCO Shares Outstanding (Basic Average)?

SUMCO TSE:3436 -3.11% 62 Shares Outstanding (Basic Average) is 350 Mil as of Dec. 2025. GuruFocus rates TSE:3436 with a GF Score™ of 62/100 and a GF Value™ of 円1,788.02 (Significantly Overvalued). The stock has 9 warning signs investors should review.

Shares outstanding are shares that have been authorized, issued, and purchased by investors and are held by them. SUMCO's average basic shares outstanding for the quarter that ended in Dec. 2025 was 350 Mil.


SUMCO  (TSE:3436) Shares Outstanding (Basic Average) Explanation

A company may buy back shares or issue shares in any fiscal period. If a company buys back shares, we should observe that the total number of shares decline. If the company issues new shares, the number of shares outstanding increases.


Be Aware

Usually the presence of treasury shares and a history of buyback are good indicators that company has competitive advantage. But studies have shown that companies usually buy back at wrong time. Buying back shares below its intrinsic value increases value for remaining shareholders. Buying back overvalued shares destroys value for existing shareholders.


SUMCO Shares Outstanding (Basic Average) Related Terms


SUMCO Shares Outstanding (Basic Average) Historical Data

* Premium members only.

The historical data trend for SUMCO's Shares Outstanding (Basic Average) 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.

SUMCO Shares Outstanding (Basic Average) Chart

SUMCO Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shares Outstanding (Basic Average)
Get a 7-Day Free Trial Premium Member Only Premium Member Only 302.67 350.17 349.88 349.70 349.71

SUMCO Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Shares Outstanding (Basic Average) 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 349.83 349.71 349.12 349.71 349.67
TSE:3436
62GF Score
SUMCO Corp TSE:3436
Shares Outstanding (Basic Average) is just one metric. See GF Score™, valuation, warning signs, and more.
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SUMCO Shares Outstanding (Basic Average) Calculation

Shares outstanding are shares that have been authorized, issued, and purchased by investors and are held by them. They have voting rights and represent ownership in the corporation by the person that holds the shares. They should be distinguished from treasury shares, which are shares held by the corporation itself, having no exercisable rights.

Shares outstanding can be calculated as either basic or fully diluted. The fully diluted shares outstanding count includes diluting securities, such as options, warrants or convertibles.

Please note: GuruFocus named Shares Outstanding (EOP) is the shares for that exact time point. It is usually used to calculate balance sheet related items, such as Book Value per Share, etc. While Shares Outstanding (Diluted Average) and Shares Outstanding (Basic Average) are the weighted average shares over a period of time (a year, a quarter, or so). They are usually used to calculate income statement or cashflow statement related items, such as Earnings per Share (Diluted), etc.

What does a Shares Outstanding (Basic Average) of 350 Mil mean?
SUMCO (TSE:3436) has a Shares Outstanding (Basic Average) of 350 Mil as of Dec. 2025. The average shares outstanding over two periods not accounting for dilutive securities like convertible bonds. View historical data on SUMCO and its competitors.
Is SUMCO's Shares Outstanding (Basic Average) too high?
SUMCO's current Shares Outstanding (Basic Average) is 350 Mil. Overall, SUMCO has a GF Score™ of 62/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does SUMCO's Shares Outstanding (Basic Average) compare to LRCX and AMAT?
SUMCO's Shares Outstanding (Basic Average) of 350 Mil can be compared against companies in the Semiconductors industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shares Outstanding (Basic Average) for a Semiconductors company?
A good Shares Outstanding (Basic Average) depends on the Semiconductors industry context. However, Shares Outstanding (Basic Average) 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 Outstanding (Basic Average) mean?
A high Shares Outstanding (Basic Average) can signal that a stock is expensive relative to its fundamentals. The average shares outstanding over two periods not accounting for dilutive securities like convertible bonds. View historical data on SUMCO and its competitors. SUMCO's current Shares Outstanding (Basic Average) is 350 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is SUMCO stock overvalued right now?
Based on GuruFocus' analysis, SUMCO (TSE:3436) is currently considered Significantly Overvalued. The stock's GF Value™ is 円1,788.02, compared to a current price of 円3,711.00 — trading 107.5% above its estimated fair value. The current Shares Outstanding (Basic Average) is 350 Mil. SUMCO's overall GF Score™ is 62/100 with 9 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shares Outstanding (Basic Average) calculated?
Shares Outstanding (Basic Average) is calculated from a company's financial statements. For SUMCO (TSE:3436), the current Shares Outstanding (Basic Average) is 350 Mil as of Dec. 2025. 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 SUMCO (TSE:3436) Overvalued in 2026?

Based on GuruFocus' analysis, SUMCO stock appears to be overvalued. The current stock price of 円3,711.00 is trading 107.5% above its estimated GF Value™ of 円1,788.02. GuruFocus considers SUMCO to be Significantly Overvalued.

Key valuation signals for TSE:3436:

  • Shares Outstanding (Basic Average): 350 Mil
  • GF Value™: 円1,788.02 vs. price of 円3,711.00 (107.5% above fair value)
  • GF Score™: 62/100 with 9 warning signs

No single metric tells the full story. See the TSE:3436 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


SUMCO Business Description

Address 1-2-1 Shibaura, Minato-ku, Tokyo, JPN, 105-8634
Founded in 1999 as a joint venture between Nippon Steel and two Mitsubishi entities, Sumco is the world's second-largest semiconductor-grade silicon wafer manufacturer, with an estimated 21% market share in 2025. Sumco is headquartered in Tokyo and operates seven production sites across Japan. It also maintains sales and support offices in Taiwan, the US, the UK, Indonesia, and Singapore. Sumco sells to most semiconductor manufacturers like TSMC, Intel, Samsung, and Micron. The firm employs over 9,700 people.
62GF Score

Get the complete analysis for TSE:3436

Shares Outstanding (Basic Average) is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

円3,711.00
Price
円1,788.02
GF Value