Who has been buying Nousouken Corporation stock?

6 distinct investors have filed 7 disclosed large-shareholding filings in Nousouken Corporation (3541), most recently on 2026-03-05. 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 Nousouken Corporation have?

Nousouken Corporation has 7 buy-side and 13 sell-side disclosures on record, covering ¥1.7B ($11.1M) in total reported value, spanning 2022-05-24 to 2026-03-05.

Where does StockDrifts get Nousouken Corporation 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.

Nousouken Corporation 3541

Company

株式会社農業総合研究所Nousouken Corporation

Investors

Buys

Total Value

¥1.7B ($11.1M)

Avg Return

+70.31%

Last Filing

2026-03-05

Nousouken Corporation (3541) has 7 disclosed large-shareholding filings and 13 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥1.7B ($11.1M) in reported transaction value. The earliest filing StockDrifts holds for Nousouken Corporation is dated 2022-05-24; the most recent is 2026-03-05. 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 +70.31%, 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
2026-03-05	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	42.0K	¥760	-0.3%	¥819M ($5.3M)
2026-02-24	BUY	negotiated	日本郵政キャピタル株式会社 Japan Post Capital Co.,Ltd.	strategic	0	¥759	+0.4%	¥2.1B ($13.5M)
2026-02-24	SELL	negotiated	日本郵政キャピタル株式会社 Japan Post Capital Co.,Ltd.	strategic	0	¥759	-0.4%	¥2.1B ($13.5M)
2026-02-20	SELL	subscription	及川智正	unknown	2.8M	¥759	-0.4%	¥2.1B ($13.5M)
2026-02-20	BUY	unknown	株式会社プレンティー代表取締役社長尾持繁美 PLENTY Co., Ltd	unknown	0	¥759	+0.4%	-
2026-02-20	BUY	unknown	株式会社プレンティー代表取締役社長尾持繁美 PLENTY Co., Ltd	unknown	0	¥759	+0.4%	-
2026-02-20	SELL	subscription	堀内寛	unknown	1.1M	¥759	-0.4%	¥838M ($5.4M)
2026-02-20	SELL	subscription	及川智正	activist	2.8M	¥759	-0.4%	¥2.1B ($13.5M)
2026-02-20	SELL	subscription	及川智正	unknown	2.8M	¥759	-0.4%	¥2.1B ($13.5M)
2026-02-20	SELL	subscription	堀内寛	activist	1.1M	¥759	-0.4%	¥838M ($5.4M)
2026-02-20	SELL	subscription	堀内寛	activist	1.1M	¥759	-0.4%	¥838M ($5.4M)
2026-02-20	SELL	subscription	堀内寛	unknown	1.1M	¥759	-0.4%	¥838M ($5.4M)
2026-02-20	SELL	subscription	及川智正	activist	2.8M	¥759	-0.4%	¥2.1B ($13.5M)
2026-02-17	BUY	subscription	堀内寛	unknown	1.1M	¥760	+0.3%	¥838M ($5.4M)
2026-02-17	BUY	subscription	SOMPO Light Vortex株式会社	activist	16.7M	¥760	+0.3%	¥12.7B ($82.2M)
2026-02-16	BUY	subscription	及川智正 Tomomasa Oikawa	activist	3.7M	¥760	+0.3%	¥2.8B ($18.4M)
2026-02-16	BUY	subscription	堀内寛 Hiroshi Horiuchi	activist	2.2M	¥760	+0.3%	¥25M ($162K)
2026-02-06	BUY	unknown	ノムラ　インターナショナル　ピーエルシー（ＮＯＭＵＲＡ　ＩＮＴＥＲＮＡＴＩＯＮＡＬ　ＰＬＣ） NOMURA INTERNATIONAL PLC	other	1.1M	¥766	-0.5%	¥856M ($5.5M)
2025-01-06	BUY	unknown	及川智正 Tomomasa Oikawa	activist	3.7M	¥243	+213.6%	¥911M ($5.9M)
2024-08-14	BUY	Market Buy	堀内寛 Hiroshi Horiuchi	activist	2.2M	¥239	+218.8%	¥8M ($51K)
2024-08-14	BUY	Market Buy	及川智正 Tomomasa Oikawa	activist	3.7M	¥239	+218.8%	¥7M ($44K)
2024-08-14	BUY	unknown	及川智正 Tomomasa Oikawa	activist	3.7M	¥239	+218.8%	¥7M ($44K)
2024-08-14	BUY	unknown	堀内寛 Hiroshi Horiuchi	activist	2.2M	¥239	+218.8%	¥8M ($51K)
2023-12-14	SELL	unknown	堀内寛 Hiroshi Horiuchi	activist	2.2M	¥271	-181.2%	¥86M ($555K)
2023-10-11	BUY	unknown	及川智正 Tomomasa Oikawa	activist	3.7M	¥311	+145.0%	¥1.2B ($7.4M)
2023-05-01	SELL	unknown	株式会社プレンティー代表取締役社長尾持繁美 PLENTY Co., Ltd	strategic	3.1M	¥412	-85.0%	¥181M ($1.2M)
2023-05-01	BUY	unknown	株式会社プレンティー代表取締役社長尾持繁美 PLENTY Co., Ltd	strategic	3.1M	¥412	+85.0%	¥181M ($1.2M)
2023-03-08	BUY	Market Buy	及川智正 Tomomasa Oikawa	activist	3.7M	¥494	+54.3%	¥1M ($7K)
2023-03-08	BUY	unknown	及川智正 Tomomasa Oikawa	activist	3.7M	¥494	+54.3%	¥139M ($899K)
2022-05-24	SELL	unknown	株式会社プレンティー代表取締役社長尾持繁美 PLENTY Co., Ltd	strategic	3.6M	¥392	-94.4%	¥458M ($3.0M)

Frequently asked questions

Who has been buying Nousouken Corporation stock?: 6 distinct investors have filed 7 disclosed large-shareholding filings in Nousouken Corporation (3541), most recently on 2026-03-05. 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 Nousouken Corporation have?: Nousouken Corporation has 7 buy-side and 13 sell-side disclosures on record, covering ¥1.7B ($11.1M) in total reported value, spanning 2022-05-24 to 2026-03-05.
Where does StockDrifts get Nousouken Corporation 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 Nousouken Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.