Berkshire "as promised" increased its Shareholding in Japan's five major trading companies, with an average holding ratio close to 10%.

The shareholding ratios of Mitsui & Co. increased from 8.09% to 9.82%, Mitsubishi Corporation's shareholding rose from 8.31% to 9.67%, Sumitomo Corporation's shareholding increased from 8.23% to 9.29%, Itochu Corporation's shareholding was raised from 7.47% to 8.53%, and Marubeni Corporation's shareholding went up from 8.30% to 9.30%. Munger once stated that Buffett's bet on the Japanese stock market is a "once in a century" opportunity, as the low interest rate environment allows investors to achieve substantial returns at almost zero cost.

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