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Tokyo Steel Manufacturing

5423.TIron & Steel
Major holders (5%+) · 2
HolderStakeChangeFiled
TOS LLC22.73%0.00pp2026-05-13
Oasis Management Company Ltd.8.65%+0.02pp2026-05-13

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

Former and minor holders (below 5%) · 5
MYJ LLC4.36%2026-05-13
Nomura Asset Management Co., Ltd.4.20%2025-04-04
Nomura Securities Co., Ltd.0.63%2025-04-04
NOMURA INTERNATIONAL PLC0.13%2025-04-04
Masanari Iketani0.00%2025-10-28
Ownership history · 13
FiledHolderRatioChangePurpose
2026-05-13Oasis Management Company Ltd.2026-05-138.65%+0.02ppMaterial proposals to management (activist); Engagement / governance dialogue
2026-05-13MYJ LLC2026-05-134.36%no changeStable shareholder; Long-term holding
2026-05-13TOS LLC2026-05-1322.73%no changeStable shareholder; Long-term holding
2026-05-11Oasis Management Company Ltd.2026-05-118.63%+2.38ppMaterial proposals to management (activist)
2026-04-02Oasis Management Company Ltd.2026-04-026.25%newMaterial proposals to management (activist)
2025-10-28TOS LLC2025-10-2822.73%newStable shareholder; Long-term holding
2025-10-28Masanari Iketani2025-10-280.00%newStable shareholder; Long-term holding
2025-10-28MYJ LLC2025-10-284.36%newStable shareholder; Long-term holding
2025-04-04AmendedNOMURA INTERNATIONAL PLC2025-04-04 · amended0.13%newSecurities trading business
2025-04-04AmendedNomura Securities Co., Ltd.2025-04-04 · amended0.63%newSecurities trading business
2025-04-04AmendedNomura Asset Management Co., Ltd.2025-04-04 · amended4.20%-2.45ppAsset management / investment
2024-05-20Nomura Asset Management Co., Ltd.2024-05-206.65%+1.89ppAsset management / investment
2024-04-04AmendedNomura Asset Management Co., Ltd.2024-04-04 · amended4.76%newAsset management / investment

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