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Core Concept Technologies

4371.TInformation & Communication
Major holders (5%+) · 3
HolderStakeChangeFiled
SIGMAXYZ Holdings Inc.15.79%+1.00pp2026-09-17
Kaneko Takeshi13.43%—2024-06-05
Geiyo Senzai K.K.9.73%+3.97pp2024-04-30

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

Former and minor holders (below 5%) · 4
Good Eco K.K.4.86%2024-04-30
Asset Management One Co., Ltd.4.69%2024-12-20
Takamori Toyofumi4.37%2024-04-30
Asset Management One International Ltd.0.00%2024-12-20
Ownership history · 21
FiledHolderRatioChangePurpose
2026-09-17SIGMAXYZ Holdings Inc.2026-09-1715.79%+1.00ppBusiness / capital relationship
2026-07-17SIGMAXYZ Holdings Inc.2026-07-1714.79%+1.03ppBusiness / capital relationship
2026-06-19SIGMAXYZ Holdings Inc.2026-06-1913.76%+1.00ppBusiness / capital relationship
2026-06-05SIGMAXYZ Holdings Inc.2026-06-0512.76%+1.03ppBusiness / capital relationship
2026-05-22SIGMAXYZ Holdings Inc.2026-05-2211.73%+1.09ppBusiness / capital relationship
2026-05-07SIGMAXYZ Holdings Inc.2026-05-0710.64%+1.07ppBusiness / capital relationship
2026-04-27SIGMAXYZ Holdings Inc.2026-04-279.57%+2.66ppBusiness / capital relationship
2026-04-22SIGMAXYZ Holdings Inc.2026-04-226.91%+1.89ppBusiness / capital relationship
2026-04-13SIGMAXYZ Holdings Inc.2026-04-135.02%newBusiness / capital relationship
2024-12-20AmendedAsset Management One International Ltd.2024-12-20 · amended0.00%new—
2024-12-20AmendedAsset Management One Co., Ltd.2024-12-20 · amended4.69%newHeld for clients (discretionary / trust)
2024-06-05Kaneko Takeshi2024-06-0513.43%newStable shareholder
2024-04-30AmendedTakamori Toyofumi2024-04-30 · amended4.37%+0.51ppStable shareholder; Long-term holding
2024-04-30AmendedGood Eco K.K.2024-04-30 · amended4.86%+0.54ppStable shareholder; Long-term holding
2024-04-30AmendedGeiyo Senzai K.K.2024-04-30 · amended9.73%+3.97ppStable shareholder; Long-term holding
2024-04-30AmendedTakamori Toyofumi2024-04-30 · amended3.86%-0.48ppStable shareholder; Long-term holding
2024-04-30AmendedGood Eco K.K.2024-04-30 · amended4.32%-0.80ppStable shareholder; Long-term holding
2024-04-30AmendedGeiyo Senzai K.K.2024-04-30 · amended5.76%-4.49ppStable shareholder; Long-term holding
2024-04-30AmendedTakamori Toyofumi2024-04-30 · amended4.34%newStable shareholder; Long-term holding
2024-04-30AmendedGood Eco K.K.2024-04-30 · amended5.12%newStable shareholder; Long-term holding

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