Japanese trading-house stocks rose sharply after Warren Buffett said Berkshire Hathaway’s stakes in them would likely increase somewhat over time.

Mitsubishi Corp. shares were recently 8.7% higher Tuesday morning, Marubeni Corp. was up 7.9% and Itochu Corp. was 6.5% higher. Meanwhile, Sumitomo Corp. was up 5.9% and Mitsui & Co. was 4.3% higher. Japanese markets were closed Monday for a national holiday.