Who has been buying Zenhoren Co.,Ltd. stock?

10 distinct investors have filed 13 disclosed large-shareholding filings in Zenhoren Co.,Ltd. (5845), most recently on 2025-10-20. 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 Zenhoren Co.,Ltd. have?

Zenhoren Co.,Ltd. has 13 buy-side and 13 sell-side disclosures on record, covering ¥21.2B ($136.7M) in total reported value, spanning 2023-10-26 to 2025-10-20.

Where does StockDrifts get Zenhoren Co.,Ltd. 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.

Zenhoren Co.,Ltd. 5845

Company

全保連株式会社Zenhoren Co.,Ltd.

Investors

Buys

Total Value

¥21.2B ($136.7M)

Avg Return

+46.35%

Last Filing

2025-10-20

Zenhoren Co.,Ltd. (5845) has 13 disclosed large-shareholding filings and 13 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥21.2B ($136.7M) in reported transaction value. The earliest filing StockDrifts holds for Zenhoren Co.,Ltd. is dated 2023-10-26; the most recent is 2025-10-20. 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 +46.35%, 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
2025-10-20	BUY	unknown	三菱UFJニコス株式会社 Mitsubishi UFJ Nicos Co., Ltd.	strategic	13.4M	¥905	+9.3%	¥293M ($1.9M)
2025-10-20	SELL	unknown	三菱UFJファクター株式会社 Mitsubishi UFJ Factor Co., Ltd.	unknown	0	¥905	-9.3%	¥349M ($2.2M)
2025-08-21	SELL	unknown	大和証券株式会社 Daiwa Securities Co.Ltd.	other	1.1M	¥882	-12.1%	¥330M ($2.1M)
2025-06-05	BUY	unknown	大和証券株式会社 Daiwa Securities Co.Ltd.	other	1.5M	¥826	+19.7%	¥1.2B ($7.8M)
2025-04-23	BUY	Market Buy	三菱UFJニコス株式会社 Mitsubishi UFJ Nicos Co., Ltd.	activist	13.0M	¥780	+26.8%	¥225M ($1.5M)
2025-04-23	BUY	Market Buy	三菱UFJファクター株式会社 Mitsubishi UFJ Factor Co., Ltd.	strategic	384.6K	¥780	+26.8%	¥6M ($40K)
2025-04-10	BUY	negotiated	三菱UFJニコス株式会社 Mitsubishi UFJ Nicos Co., Ltd.	activist	13.0M	¥772	+28.1%	¥10.1B ($64.9M)
2025-04-10	BUY	negotiated	三菱UFJファクター株式会社 Mitsubishi UFJ Factor Co., Ltd.	strategic	384.6K	¥772	+28.1%	¥297M ($1.9M)
2025-04-09	SELL	Market Buy	インベストメントZ株式会社 Investment Z Co.,Ltd	passive	390.0K	¥700	-41.3%	¥1.3B ($8.6M)
2025-04-09	SELL	Market Buy	AZ-Star株式会社 AZ-Star Co.,Ltd.	passive	1.1M	¥700	-41.3%	¥3.8B ($24.7M)
2025-03-24	SELL	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	0	¥961	-2.9%	¥125M ($804K)
2025-03-24	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	832.4K	¥961	-2.9%	¥384M ($2.5M)
2025-02-18	SELL	Market Buy	インベストメントZ株式会社 Investment Z Co.,Ltd	passive	2.3M	¥971	-1.9%	¥385M ($2.5M)
2025-02-17	SELL	Market Buy	AZ-Star株式会社 AZ-Star Co.,Ltd.	passive	6.6M	¥908	-8.9%	¥1.0B ($6.7M)
2024-10-28	SELL	unknown	迫幸治 Sako Yukiharu	activist	2.9M	¥691	-43.1%	¥259M ($1.7M)
2024-10-28	SELL	unknown	茨木英彦 Ibaraki Hidehiko	activist	1.2M	¥691	-43.1%	¥99M ($637K)
2024-09-19	SELL	Market Buy	フレンドリー・パートナーズ株式会社 Friendly Partners Co., Ltd.	passive	1.1M	¥706	-40.1%	¥217M ($1.4M)
2024-07-03	SELL	unknown	茨木英彦 IBARAKI HIDEHIKO	activist	1.3M	¥727	-36.0%	¥37M ($236K)
2024-07-03	BUY	unknown	茨木英彦 IBARAKI HIDEHIKO	activist	1.3M	¥727	+36.0%	¥37M ($236K)
2024-06-07	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	114.7K	¥682	+45.0%	¥78M ($505K)
2024-06-07	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	1.1M	¥682	+45.0%	¥746M ($4.8M)
2024-02-20	BUY	Market Buy	AZ-Star株式会社 AZ-Star Co.,Ltd.	passive	6.6M	¥891	+11.0%	¥5.8B ($37.7M)
2023-11-29	SELL	Market Buy	AZ-Star株式会社 AZ-Star Co.,Ltd.	passive	6.6M	¥899	-10.0%	¥647M ($4.2M)
2023-10-31	BUY	Market Buy	インベストメントZ株式会社 Investment Z Co.,Ltd	passive	2.3M	¥571	+73.2%	¥1.3B ($8.4M)
2023-10-30	BUY	Market Buy	AZ-Star株式会社 AZ-Star Co.,Ltd.	passive	7.3M	¥585	+69.1%	¥4.3B ($27.5M)
2023-10-27	BUY	Market Buy	フレンドリー・パートナーズ株式会社 Friendly Partners Co., Ltd.	passive	1.3M	¥559	+76.9%	¥744M ($4.8M)
2023-10-26	BUY	unknown	茨木英彦 IBARAKI HIDEHIKO	activist	1.3M	¥558	+77.2%	¥708M ($4.6M)
2023-10-26	BUY	unknown	迫幸治 SAKO YUKIHARU	activist	3.0M	¥558	+77.2%	¥1.6B ($10.6M)

Frequently asked questions

Who has been buying Zenhoren Co.,Ltd. stock?: 10 distinct investors have filed 13 disclosed large-shareholding filings in Zenhoren Co.,Ltd. (5845), most recently on 2025-10-20. 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 Zenhoren Co.,Ltd. have?: Zenhoren Co.,Ltd. has 13 buy-side and 13 sell-side disclosures on record, covering ¥21.2B ($136.7M) in total reported value, spanning 2023-10-26 to 2025-10-20.
Where does StockDrifts get Zenhoren Co.,Ltd. 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 Zenhoren Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.