The Japanese Nikkei index rose for the fourth consecutive session on Wednesday, supported by consumer spending indicators in stores and optimism regarding billionaire Warren Buffett's outlook on increasing investments in the country. The Nikkei reached its highest level in a week during morning trading, closing up 0.6% at 28,082 points. The broader Topix index also rose by 0.8%. Shares of store management company J. Front Retailing rose 1.3% after announcing that its net profit for the year ending in February had tripled following the market's close on Tuesday, with expectations of further growth. Buffett (92 years old) confirmed in an interview with the Nikkei on Tuesday that he is "proud of his investments in the largest trading enterprises in Japan."