Market Warren Buffett looks to Japan, takes 5% stakes in five biggest trading firms Updated : August 31, 2020 07:54 AM IST Shares of companies often rise when Berkshire discloses new investments, reflecting what investors view as Buffett's imprimatur. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.