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System Research

3771.TInformation & Communication
Major holders (5%+) · 4
HolderStakeChangeFiled
FIAM LLC10.00%+0.14pp2026-09-24
Fidelity Management & Research Company LLC9.86%-0.14pp2026-09-07
YAMADA TOSHIYUKI9.48%-4.78pp2025-10-02
FMR LLC9.45%+1.26pp2026-06-17

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

Former and minor holders (below 5%) · 2
YAMADA MIYOKO1.38%2025-10-02
Fidelity Management Trust Company0.29%2026-06-17
Ownership history · 30
FiledHolderRatioChangePurpose
2026-06-17Same-day filingFMR LLC2026-06-179.45%+1.26ppHeld for clients (discretionary / trust); Asset management / investment
2026-06-17Same-day filingFMR LLC2026-06-178.19%-1.81ppHeld for clients (discretionary / trust); Asset management / investment
2026-05-12AmendedFMR LLC2026-05-12 · amended10.00%no changeHeld for clients (discretionary / trust); Asset management / investment
2026-04-07AmendedFMR LLC2026-04-07 · amended10.00%no changeHeld for clients (discretionary / trust); Asset management / investment
2025-11-10AmendedFMR LLC2025-11-10 · amended10.00%no changeHeld for clients (discretionary / trust); Asset management / investment
2025-10-07AmendedFMR LLC2025-10-07 · amended10.00%newHeld for clients (discretionary / trust); Asset management / investment
2025-10-02AmendedYAMADA MIYOKO2025-10-02 · amended1.38%no changeStable shareholder; Long-term holding
2025-10-02AmendedYAMADA TOSHIYUKI2025-10-02 · amended9.48%-4.78ppParticipation in management; Stable shareholder; Long-term holding
2024-12-05YAMADA MIYOKO2024-12-051.38%newStable shareholder; Long-term holding
2024-12-05YAMADA TOSHIYUKI2024-12-0514.26%newParticipation in management; Stable shareholder; Long-term holding

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