Buffett's Japan layout began in 2020, when he bought 5% of each of the five major trading companies for about US$30 billion.

Shigeru Ishiba, who is somewhat hawkish, has directly or indirectly expressed opposition to "Abenomics" on multiple occasions.

The sharp drop in financed stock purchases suggests that leveraged retail investors, who account for about 20 percent of the total value of trades at Japanese brokerages, suffered big losses that week and are unlikely to return to the market anytime soon.