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The Kosei Securities

8617.TSecurities & Commodity Futures
Filed as The Kosei Securities Co.,Ltd. (2022-06–2026-06)
Major holders (5%+) · 4
HolderStakeChangeFiled
tatumiyagura CO., LTD19.99%-0.40pp2026-01-05
tatumijimusho CO., LTD11.72%-1.37pp2026-01-05
tetugakunomichi CO., LTD9.61%0.00pp2026-01-05
Daisuke Tatsumi5.70%—2025-11-18

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%2024-05-08
Haruna Tatsumi3.15%2025-11-18
Nikko Asset Management Co., Ltd.0.23%2024-05-08
Ownership history · 31
FiledHolderRatioChangePurpose
2024-10-30tetugakunomichi CO., LTD2024-10-309.61%no changeStrategic holding (cross-shareholding)
2024-10-30tatumijimusho CO., LTD2024-10-3012.98%-2.33ppStable shareholder
2024-10-30tatumiyagura CO., LTD2024-10-3019.19%no changeStable shareholder
2024-10-29tetugakunomichi CO., LTD2024-10-299.61%no changeStrategic holding (cross-shareholding)
2024-10-29tatumijimusho CO., LTD2024-10-2915.31%-0.95ppStable shareholder
2024-10-29tatumiyagura CO., LTD2024-10-2919.19%+2.26ppStable shareholder
2024-05-08Nikko Asset Management Co., Ltd.2024-05-080.23%newHeld for clients (discretionary / trust)
2024-05-08Sumitomo Mitsui Trust Asset Management Co., Ltd.2024-05-084.31%newHeld for clients (discretionary / trust); Asset management / investment
2024-01-25Amendedtetugakunomichi CO., LTD2024-01-25 · amended9.61%newStrategic holding (cross-shareholding)
2024-01-25Amendedtatumijimusho CO., LTD2024-01-25 · amended16.26%newStable shareholder
2024-01-25Amendedtatumiyagura CO., LTD2024-01-25 · amended16.93%newStable shareholder

Each holder in 5% reports, joint holders included. Purpose is classified from the filed text.