Who has been buying Commerce One Holdings Inc. stock?

8 distinct investors have filed 7 disclosed large-shareholding filings in Commerce One Holdings Inc. (4496), most recently on 2025-09-26. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.

How many insider filings does Commerce One Holdings Inc. have?

Commerce One Holdings Inc. has 7 buy-side and 10 sell-side disclosures on record, covering ¥480M ($3.1M) in total reported value, spanning 2022-02-22 to 2025-09-26.

Where does StockDrifts get Commerce One Holdings Inc. insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

Do insider buys in Japanese stocks predict returns?

Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Commerce One Holdings Inc. 4496

Company

株式会社コマースOneホールディングスCommerce One Holdings Inc.

Investors

Buys

Total Value

¥480M ($3.1M)

Avg Return

-9.33%

Last Filing

2025-09-26

Commerce One Holdings Inc. (4496) has 7 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥480M ($3.1M) in reported transaction value. The earliest filing StockDrifts holds for Commerce One Holdings Inc. is dated 2022-02-22; the most recent is 2025-09-26. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is -9.33%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-08-05	BUY	Market Buy	株式会社UH Partners 2	passive	213.5K	¥772	+3.0%	¥56M ($358K)
2026-08-05	BUY	Market Buy	光通信株式会社	passive	540.9K	¥772	+3.0%	¥418M ($2.7M)
2026-06-19	BUY	Market Buy	株式会社UH Partners 2	passive	141.4K	¥797	+3.4%	¥58M ($374K)
2026-06-19	BUY	Market Buy	光通信株式会社	passive	540.9K	¥797	+3.4%	¥431M ($2.8M)
2026-05-26	SELL	unknown	株式会社EPARK	unknown	0	¥695	-14.7%	¥20M ($132K)
2026-05-26	BUY	Market Buy	株式会社UH Partners 2	passive	69.1K	¥695	+14.7%	¥48M ($310K)
2026-05-26	BUY	Market Buy	光通信株式会社	passive	540.9K	¥695	+14.7%	¥23M ($148K)
2025-09-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	507.9K	¥806	-7.1%	¥10M ($67K)
2025-09-26	BUY	Market Buy	株式会社EPARK EPARK , INC.	passive	29.6K	¥806	-7.1%	¥12M ($75K)
2025-07-07	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	494.9K	¥767	-2.4%	¥47M ($306K)
2025-07-07	BUY	Market Buy	株式会社EPARK EPARK , INC.	passive	15.1K	¥767	-2.4%	¥12M ($75K)
2025-01-14	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	433.1K	¥752	-0.4%	¥55M ($352K)
2024-12-18	SELL	Market Buy	株式会社フューチャースピリッツ Future Spirits Co., Ltd.	passive	264.4K	¥755	+0.8%	¥226M ($1.5M)
2024-12-18	BUY	Market Buy	株式会社フューチャースピリッツ Future Spirits Co., Ltd.	passive	264.4K	¥755	-0.8%	¥207M ($1.3M)
2024-09-12	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	360.3K	¥732	+2.3%	¥264M ($1.7M)
2024-06-03	SELL	Market Buy	アジアン・アセット・アクイジション・プライベート・リミテッド(Asian Asset Acquisition Pte. Ltd.) Asian Asset Acquisition Pte. Ltd.	passive	1.7M	¥734	-2.0%	¥13M ($86K)
2024-03-12	SELL	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	305.2K	¥769	+2.6%	¥58M ($373K)
2022-10-21	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	112.0K	¥947	+20.9%	¥11M ($74K)
2022-10-21	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	221.6K	¥947	+20.9%	¥63M ($404K)
2022-10-21	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	15.0K	¥947	-20.9%	¥14M ($92K)
2022-07-25	BUY	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	381.0K	¥915	-18.1%	¥349M ($2.2M)
2022-07-07	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	124.5K	¥878	+14.7%	¥3M ($21K)
2022-07-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	288.2K	¥878	+14.7%	¥90M ($584K)
2022-07-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	15.0K	¥878	-14.7%	¥13M ($85K)
2022-06-07	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	127.7K	¥933	+19.7%	¥11M ($72K)
2022-06-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	391.1K	¥933	+19.7%	¥76M ($489K)
2022-06-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	15.0K	¥933	-19.7%	¥14M ($90K)
2022-02-22	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	139.8K	¥1,111	-32.6%	¥18M ($119K)
2022-02-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	472.3K	¥1,111	+32.6%	¥84M ($539K)
2022-02-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	15.0K	¥1,111	-32.6%	¥17M ($108K)

Frequently asked questions

Who has been buying Commerce One Holdings Inc. stock?: 8 distinct investors have filed 7 disclosed large-shareholding filings in Commerce One Holdings Inc. (4496), most recently on 2025-09-26. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does Commerce One Holdings Inc. have?: Commerce One Holdings Inc. has 7 buy-side and 10 sell-side disclosures on record, covering ¥480M ($3.1M) in total reported value, spanning 2022-02-22 to 2025-09-26.
Where does StockDrifts get Commerce One Holdings Inc. insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
Do insider buys in Japanese stocks predict returns?: Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for Commerce One Holdings Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.