Who has been buying Ashimori Industry Co., Ltd. stock?

7 distinct investors have filed 32 disclosed large-shareholding filings in Ashimori Industry Co., Ltd. (3526), most recently on 2026-01-22. 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 Ashimori Industry Co., Ltd. have?

Ashimori Industry Co., Ltd. has 32 buy-side and 6 sell-side disclosures on record, covering ¥27.4B ($176.5M) in total reported value, spanning 2021-05-19 to 2026-01-22.

Where does StockDrifts get Ashimori Industry 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.

Ashimori Industry Co., Ltd. 3526

Company

芦森工業株式会社Ashimori Industry Co., Ltd.

Investors

Buys

Total Value

¥27.4B ($176.5M)

Avg Return

+25.37%

Last Filing

2026-01-22

Ashimori Industry Co., Ltd. (3526) has 32 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥27.4B ($176.5M) in reported transaction value. The earliest filing StockDrifts holds for Ashimori Industry Co., Ltd. is dated 2021-05-19; the most recent is 2026-01-22. 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 +25.37%, 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
2026-01-22	BUY	acquisition	豊田合成株式会社 TOYODA GOSEI CO., LTD.	activist	4.0M	¥4,115	+0.0%	¥272M ($1.8M)
2025-12-25	BUY	acquisition	豊田合成株式会社 TOYODA GOSEI CO., LTD.	activist	3.9M	¥4,100	+0.4%	¥266M ($1.7M)
2025-12-16	BUY	Market Buy	宇内章起 Norioki Unai	unknown	0	¥4,125	-0.2%	¥8M ($52K)
2025-12-16	BUY	acquisition	豊田合成株式会社 TOYODA GOSEI CO., LTD.	activist	3.8M	¥4,125	-0.2%	¥285M ($1.8M)
2025-12-16	BUY	unknown	宇内章起 Norioki Unai	unknown	0	¥4,125	-0.2%	¥8M ($52K)
2025-12-16	BUY	acquisition	豊田合成株式会社 TOYODA GOSEI CO., LTD.	activist	3.8M	¥4,125	-0.2%	¥262M ($1.7M)
2025-11-27	BUY	Market Buy	株式会社MI1	activist	247.0K	¥4,105	+0.2%	¥1.0B ($6.6M)
2025-11-27	BUY	Market Buy	株式会社MI5	activist	20.0K	¥4,105	-0.2%	¥82M ($531K)
2025-11-27	BUY	Market Buy	村上貴輝	activist	599.0K	¥4,105	-0.2%	¥2.5B ($15.9M)
2025-11-27	BUY	Market Buy	株式会社MI2	activist	599.0K	¥4,105	-0.2%	¥2.5B ($15.9M)
2025-11-26	BUY	acquisition	豊田合成株式会社 TOYODA GOSEI CO., LTD.	activist	3.8M	¥4,140	-0.6%	¥341M ($2.2M)
2025-11-18	BUY	Market Buy	株式会社MI1 MI1 Co., Ltd.	activist	186.0K	¥4,110	+0.1%	¥276M ($1.8M)
2025-11-18	BUY	Market Buy	株式会社MI5 MI5 Co., Ltd.	activist	20.0K	¥4,110	+0.1%	¥82M ($530K)
2025-11-18	BUY	Market Buy	村上貴輝 Takateru Murakami	activist	599.0K	¥4,110	+0.1%	¥2.5B ($15.9M)
2025-11-18	BUY	Market Buy	株式会社MI2 MI2 Ltd.	activist	599.0K	¥4,110	+0.1%	¥2.5B ($15.9M)
2025-11-10	BUY	Market Buy	株式会社MI1 MI1 Co., Ltd.	activist	119.0K	¥4,145	-0.7%	¥216M ($1.4M)
2025-11-10	BUY	Market Buy	株式会社MI5 MI5 Co., Ltd.	activist	20.0K	¥4,145	-0.7%	¥83M ($535K)
2025-11-10	BUY	Market Buy	村上貴輝 Takateru Murakami	activist	599.0K	¥4,145	-0.7%	¥2.5B ($16.0M)
2025-11-10	BUY	Market Buy	株式会社MI2 MI2 Ltd.	activist	599.0K	¥4,145	-0.7%	¥85M ($551K)
2025-11-06	BUY	Market Buy	株式会社MI1 MI1 Co., Ltd.	activist	66.5K	¥4,160	-1.1%	¥38M ($244K)
2025-11-06	SELL	Market Buy	株式会社MI5 MI5 Co., Ltd.	activist	20.0K	¥4,160	+1.1%	¥43M ($276K)
2025-11-06	BUY	Market Buy	村上貴輝 Takateru Murakami	activist	599.0K	¥4,160	-1.1%	¥10M ($65K)
2025-11-06	BUY	Market Buy	株式会社MI2 MI2 Ltd.	activist	578.4K	¥4,160	-1.1%	¥282M ($1.8M)
2025-11-06	BUY	unknown	芦森工業取引先持株会理事長宇内章起 Norioki Unai	unknown	0	¥4,160	-1.1%	¥1.6B ($10.2M)
2025-11-06	SELL	unknown	芦森工業取引先持株会理事長宇内章起 Norioki Unai	unknown	0	¥4,160	+1.1%	¥1.6B ($10.2M)
2025-10-31	BUY	acquisition	豊田合成株式会社 TOYODA GOSEI CO., LTD.	activist	3.7M	¥4,135	-0.5%	¥8.2B ($53.1M)
2025-09-08	BUY	Market Buy	株式会社MI1 MI1 Co., Ltd.	other	57.5K	¥4,285	-4.0%	¥246M ($1.6M)
2025-09-08	BUY	Market Buy	株式会社MI5 MI5 Co., Ltd.	other	30.0K	¥4,285	-4.0%	¥129M ($829K)
2025-09-08	BUY	Market Buy	村上貴輝 Takateru Murakami	other	596.9K	¥4,285	-4.0%	¥2.6B ($16.5M)
2025-09-08	BUY	Market Buy	株式会社MI2 MI2 Ltd.	other	510.6K	¥4,285	-4.0%	¥379M ($2.4M)
2025-09-03	BUY	Market Buy	株式会社MI1 MI1 Co., Ltd.	other	57.5K	¥4,225	-2.6%	¥243M ($1.6M)
2025-09-03	BUY	Market Buy	株式会社MI5 MI5 Co., Ltd.	other	30.0K	¥4,225	-2.6%	¥23M ($149K)
2025-09-03	BUY	Market Buy	村上貴輝 Takateru Murakami	other	596.9K	¥4,225	-2.6%	¥2.5B ($16.3M)
2025-09-03	BUY	Market Buy	株式会社MI2 MI2 Ltd.	other	422.0K	¥4,225	-2.6%	¥486M ($3.1M)
2025-09-01	BUY	Market Buy	株式会社MI1 MI1 Co., Ltd.	activist	57.5K	¥4,250	-3.2%	¥245M ($1.6M)
2025-09-01	BUY	Market Buy	株式会社MI5 MI5 Co., Ltd.	activist	25.0K	¥4,250	-3.2%	¥106M ($685K)
2025-09-01	BUY	Market Buy	村上貴輝 Takateru Murakami	activist	596.9K	¥4,250	-3.2%	¥2.5B ($16.4M)
2025-09-01	BUY	Market Buy	株式会社MI2 MI2 Ltd.	activist	307.0K	¥4,250	-3.2%	¥216M ($1.4M)
2025-08-27	BUY	Market Buy	村上貴輝 Takateru Murakami	activist	596.9K	¥4,265	-3.5%	¥2.5B ($16.4M)
2025-08-27	BUY	Market Buy	株式会社MI2 MI2 Ltd.	activist	256.1K	¥4,265	-3.5%	¥431M ($2.8M)
2025-08-27	BUY	Market Buy	株式会社MI5 MI5 Co., Ltd.	activist	25.0K	¥4,265	-3.5%	¥41M ($267K)
2025-08-26	BUY	Market Buy	株式会社MI5 MI5 Co., Ltd.	activist	15.0K	¥4,215	-2.4%	¥33M ($214K)
2025-08-26	BUY	Market Buy	村上貴輝 Takateru Murakami	activist	596.9K	¥4,215	-2.4%	¥2.5B ($16.2M)
2025-08-26	BUY	Market Buy	株式会社MI2 MI2 Ltd.	activist	155.1K	¥4,215	-2.4%	¥434M ($2.8M)
2025-08-25	BUY	Market Buy	株式会社MI5 MI5 Co., Ltd.	activist	7.0K	¥4,185	-1.7%	¥30M ($196K)
2025-08-25	BUY	Market Buy	村上貴輝 Takateru Murakami	activist	596.9K	¥4,185	-1.7%	¥208M ($1.3M)
2025-08-25	BUY	Market Buy	株式会社MI2 MI2 Ltd.	activist	52.1K	¥4,185	-1.7%	¥21.8B ($140.6M)
2025-08-22	BUY	Market Buy	村上貴輝 Takateru Murakami	activist	546.9K	¥4,200	-2.0%	¥557M ($3.6M)
2025-08-22	BUY	Market Buy	株式会社MI2 MI2 Ltd.	activist	100	¥4,200	-2.0%	¥420K ($3K)
2025-08-21	BUY	unknown	村上貴輝 Takateru Murakami	activist	414.5K	¥4,150	-0.8%	¥1.7B ($11.1M)

Showing the 50 most recent of 60 filings.

Frequently asked questions

Who has been buying Ashimori Industry Co., Ltd. stock?: 7 distinct investors have filed 32 disclosed large-shareholding filings in Ashimori Industry Co., Ltd. (3526), most recently on 2026-01-22. 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 Ashimori Industry Co., Ltd. have?: Ashimori Industry Co., Ltd. has 32 buy-side and 6 sell-side disclosures on record, covering ¥27.4B ($176.5M) in total reported value, spanning 2021-05-19 to 2026-01-22.
Where does StockDrifts get Ashimori Industry 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 Ashimori Industry Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.