The Kosei Securities
8617.TSecurities & Commodity Futures
Filed as The Kosei Securities Co.,Ltd. (2022-06–2026-06)
Major holders (5%+) · 4
| Holder | Stake |
|---|---|
| tatumiyagura CO., LTD | 19.99% |
| tatumijimusho CO., LTD | 11.72% |
| tetugakunomichi CO., LTD | 9.61% |
| Daisuke Tatsumi | 5.70% |
Each holder's own ratio from its most recent large-shareholding report.
Former and minor holders (below 5%) · 3
| Sumitomo Mitsui Trust Asset Management Co., Ltd. | 4.31% |
| Haruna Tatsumi | 3.15% |
| Nikko Asset Management Co., Ltd. | 0.23% |
Ownership history · 31
| Holder | Ratio | Change |
|---|---|---|
| tetugakunomichi CO., LTD2026-01-05 | 9.61% | no change |
| tatumijimusho CO., LTD2026-01-05 | 11.72% | -1.37pp |
| tatumiyagura CO., LTD2026-01-05 | 19.99% | -0.40pp |
| Haruna Tatsumi2025-11-18 | 3.15% | new |
| Daisuke Tatsumi2025-11-18 | 5.70% | new |
| tetugakunomichi CO., LTD2025-11-11 | 9.61% | no change |
| tatumijimusho CO., LTD2025-11-11 | 13.09% | -3.26pp |
| tatumiyagura CO., LTD2025-11-11 | 20.39% | +0.01pp |
| tetugakunomichi CO., LTD2025-11-10 | 9.61% | no change |
| tatumijimusho CO., LTD2025-11-10 | 16.35% | +1.79pp |
| tatumiyagura CO., LTD2025-11-10 | 20.38% | +0.69pp |
| tetugakunomichi CO., LTD2025-08-19 | 9.61% | no change |
| tatumijimusho CO., LTD2025-08-19 | 14.56% | no change |
| tatumiyagura CO., LTD2025-08-19 | 19.69% | +1.04pp |
| tetugakunomichi CO., LTD2025-06-05 | 9.61% | no change |
| tatumijimusho CO., LTD2025-06-05 | 14.56% | no change |
| tatumiyagura CO., LTD2025-06-05 | 18.65% | +1.04pp |
| tetugakunomichi CO., LTD2025-04-24 | 9.61% | no change |
| tatumijimusho CO., LTD2025-04-24 | 14.56% | +1.58pp |
| tatumiyagura CO., LTD2025-04-24 | 17.61% | -1.58pp |
Each holder in 5% reports, joint holders included. Purpose is classified from the filed text.