Asset-management company of Makiko Satoest. (its holdings are included in Makiko Sato's net worth)
| Company | Shares | Stake | Price | Value | Dividends |
|---|---|---|---|---|---|
| Watanabe Sato Co., Ltd. 1807 · FY ending Mar 2026 |
1,300,000 | 20.82% | ¥1,996 | ¥2.6B | ¥104M |
| Toyo Kanetsu K.K. 6369 · FY ending Mar 2026 |
222,000 | 1.40% | ¥2,748 | ¥610M | ¥34.0M |