Sumitomo Corporation (住友商事, Sumitomo Shōji) TYO: 8053 is one of the largest worldwide trading companies Sogo shosha, and is a diversified corporation. Sumitomo is headquartered in the Harumi Island Triton Square Office Tower Y in Chūō, Tokyo, Japan.[1] Incorporated in 1919, it is a member company of the Sumitomo Group.

In 1996, the company disclosed a loss of 2.6 billion dollars, blaming unauthorized trades by its chief copper trader, Yasuo Hamanaka, over a period of more than ten years (see wikipedia:Sumitomo copper affair).

Today, the company is one of the top three Sogo shosha companies in the world.




  1. "Corporate Profile." Sumitomo Corporation. Retrieved on January 26, 2009.

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