Berkshire's stakes have increased to 6.59% from 5.04% in Mitsubishi Corp, to 6.62% from 5.03% in Mitsui & Co Ltd, to 6.21% from 5.02% in Itochu Corp, to 6.75% from 5.06% in Marubeni Corp and to 6.57% from 5.04% in Sumitomo Corp.

Berkshire said in 2020 that its investments in the Japanese trading houses are for the long term and the stakes could rise to 9.9%.

(Reporting by Makiko Yamazaki; Editing by Jamie Freed)