SUMCO Corporation
Public KK
Traded as TYO: 3436
Industry Semiconductor
Founded (July 30, 1999 (1999-07-30))
Headquarters 1-2-1 Shibaura, Minato, Tokyo 105-8634, Japan
Key people
Mayuki Hashimoto
(President and CEO)

Increase$ 1.83 billion USD (FY 2013)

(¥ 200.58 billion JPY) (FY 2013)

Increase$ 16.5 million USD (FY 2013)

(¥ 1.8 billion JPY) (FY 2013)
Number of employees
7,277 (consolidated as of December 31, 2013)
Footnotes / references

SUMCO Corporation (株式会社SUMCO Kabushiki-gaisha Samuko, formerly Silicon United Manufacturing Corporation and Sumitomo Mitsubishi Silicon Corporation) is a Japanese semiconductor company, manufacturing silicon wafers for semiconductor manufacturers worldwide. The company was established in 1999 as a joint venture between Mitsubishi Materials Corporation and Sumitomo Metal Industries[4] and as of 2013 is the second largest silicon wafer producer in the world, after Shin-Etsu Handotai, with a market share of 30%.[5][6]

SUMCO is listed on the first section of the Tokyo Stock Exchange and is a constituent of the Nikkei 225 stock index.[7]


The company manufactures the following products:[8]


  1. "Corporate Data". SUMCO Corporation. Retrieved September 26, 2014.
  2. "Company Profile". Bloomberg L.P. Retrieved September 26, 2014.
  3. "Financials Statements". Bloomberg Businessweek. Retrieved September 26, 2014.
  4. "SUMCO Corporation Company Profile". Hoover's. Retrieved September 26, 2014.
  5. "Market Share Analysis: Silicon Wafers, Worldwide, 2013". Gartner. Retrieved September 26, 2014.
  6. Kathryn Lynch-Morin (April 22, 2013). "Hemlock Semiconductor named supplier of the year by silicon-wafer producer SUMCO". MLive Media Group. Retrieved September 26, 2014.
  7. "Components:Nikkei Stock Average". Nikkei Inc. Retrieved September 26, 2014.
  8. "Product Lineup". SUMCO Corporation. Retrieved September 26, 2014.
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