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Koei Tecmo Holdings

3635.TInformation & Communication
Major holders (5%+) · 3
HolderStakeChangeFiled
Koyu Holdings Corporation51.52%-1.80pp2025-09-18
Ayar First Investment Company9.30%—2026-01-09
Kankyoukagaku Kabushikikaisya6.44%—2025-09-18

Each holder's own ratio from its most recent large-shareholding report.

Former and minor holders (below 5%) · 14
Mizuho Securities Co., Ltd.1.03%2024-04-22
Asset Management One Co., Ltd.1.01%2024-04-22
Erikawa Mei0.60%2025-09-18
Erikawa Ai0.60%2025-09-18
Yasuharu Kakihara0.36%2025-09-18
Kabushikikaisya Seishinkan0.33%2025-09-18
Kabushikikaisya Seibunkan0.30%2025-09-18
Kensei Kakihara0.18%2025-09-18
Kabushikikaisya Seiyuusya0.09%2025-09-18
Takanori Kakihara0.02%2025-09-18
Erikawa Yoichi0.02%2025-09-18
Erikawa Keiko0.02%2025-09-18
Public Investment Fund0.00%2026-01-09
Mizuho International plc0.00%2024-04-22
Tender offers · 1
FiledOfferorPricePeriod endsStatusFilings
2021-12-08Company buyback (self-tender)——Result filed2

Grouped by EDINET filing links. Price and outcome as stated in filings.

Ownership history · 51
FiledHolderRatioChangePurpose
2024-07-11Erikawa Yoichi2024-07-110.02%no changeParticipation in management
2024-07-11Erikawa Mei2024-07-110.60%no changeStable shareholder
2024-07-11Erikawa Ai2024-07-110.60%no changeStable shareholder
2024-07-11Koyu Holdings Corporation2024-07-1152.32%+1.02ppStable shareholder
2024-05-20Erikawa Keiko2024-05-200.01%no changeParticipation in management
2024-05-20Erikawa Yoichi2024-05-200.02%no changeParticipation in management
2024-05-20Erikawa Mei2024-05-200.60%no changeStable shareholder
2024-05-20Erikawa Ai2024-05-200.60%no changeStable shareholder
2024-05-20Koyu Holdings Corporation2024-05-2051.30%+0.11ppStable shareholder
2024-04-22AmendedMizuho International plc2024-04-22 · amended0.00%no changeSecurities trading business
2024-04-22AmendedAsset Management One Co., Ltd.2024-04-22 · amended1.01%-0.14ppHeld for clients (discretionary / trust)
2024-04-22AmendedMizuho Securities Co., Ltd.2024-04-22 · amended1.03%-5.96ppSecurities trading business
2024-04-22AmendedMizuho International plc2024-04-22 · amended0.00%no changeSecurities trading business
2024-04-22AmendedAsset Management One Co., Ltd.2024-04-22 · amended1.15%+0.28ppHeld for clients (discretionary / trust)
2024-04-22AmendedMizuho Securities Co., Ltd.2024-04-22 · amended6.99%+5.97ppSecurities trading business
2024-04-05AmendedMizuho International plc2024-04-05 · amended0.00%no changeSecurities trading business
2024-04-05AmendedAsset Management One Co., Ltd.2024-04-05 · amended0.87%-0.03ppHeld for clients (discretionary / trust)
2024-04-05AmendedMizuho Securities Co., Ltd.2024-04-05 · amended1.02%-6.03ppSecurities trading business
2024-04-05Erikawa Keiko2024-04-050.01%newParticipation in management
2024-04-05Erikawa Yoichi2024-04-050.02%newParticipation in management

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