Yasufumi Takahashi, a trader in precious metals at Nissho Iwai, has enrolled in a class to study financial planning.

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Hayami is an advisor at Nissho Iwai, one of Japan's top five trading companies, having served as its president and chairman.

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Sogo shosha Marubeni (No. 7) and Nissho Iwai (No. 10) grossed about 15% less, but managed to swing back into the black.

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