Who has been buying Matsuya R&D Co.,Ltd stock?

6 distinct investors have filed 6 disclosed large-shareholding filings in Matsuya R&D Co.,Ltd (7317), most recently on 2026-05-11. 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 Matsuya R&D Co.,Ltd have?

Matsuya R&D Co.,Ltd has 6 buy-side and 37 sell-side disclosures on record, covering ¥105M ($678K) in total reported value, spanning 2021-05-21 to 2026-05-11.

Where does StockDrifts get Matsuya R&D 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.

Matsuya R&D Co.,Ltd 7317

Company

株式会社松屋アールアンドディMatsuya R&D Co.,Ltd

Investors

Buys

Total Value

¥105M ($678K)

Avg Return

+240.09%

Last Filing

2026-05-11

Matsuya R&D Co.,Ltd (7317) has 6 disclosed large-shareholding filings and 37 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥105M ($678K) in reported transaction value. The earliest filing StockDrifts holds for Matsuya R&D Co.,Ltd is dated 2021-05-21; the most recent is 2026-05-11. 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 +240.09%, 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
2026-06-29	BUY	subscription	オムロンヘルスケア株式会社 OMRON HEALTHCARE Co., Ltd.	activist	21.6M	¥1,099	+0.4%	¥844M ($5.4M)
2026-06-19	BUY	subscription	オムロンヘルスケア株式会社 OMRON HEALTHCARE Co., Ltd.	activist	20.7M	¥1,103	+0.0%	¥19.3B ($124.6M)
2026-06-18	BUY	unknown	後藤秀隆	unknown	0	¥1,103	+0.0%	-
2026-06-18	SELL	unknown	ゴトウホールディング株式会社	strategic	0	¥1,103	+0.0%	¥2.2B ($14.3M)
2026-06-18	SELL	unknown	後藤匡啓	strategic	0	¥1,103	+0.0%	¥4.0B ($25.7M)
2026-06-18	SELL	unknown	後藤倫啓	strategic	0	¥1,103	+0.0%	¥4.0B ($25.7M)
2026-06-18	SELL	unknown	後藤秀隆	strategic	0	¥1,103	+0.0%	¥2.1B ($13.4M)
2026-05-11	BUY	unknown	後藤秀隆	unknown	1.9M	¥1,103	+0.5%	¥2.1B ($13.4M)
2026-05-11	BUY	unknown	ゴトウホールディング株式会社	strategic	2.0M	¥1,103	+0.5%	¥2.2B ($14.2M)
2026-05-11	BUY	unknown	後藤匡啓	strategic	3.6M	¥1,103	+0.5%	¥4.0B ($25.6M)
2026-05-11	BUY	unknown	後藤倫啓	strategic	3.6M	¥1,103	+0.5%	¥4.0B ($25.6M)
2026-05-11	BUY	unknown	後藤秀隆	strategic	1.9M	¥1,103	+0.5%	¥2.1B ($13.4M)
2026-04-27	BUY	unknown	後藤秀隆	unknown	1.9M	¥1,098	+0.9%	¥2.1B ($13.3M)
2026-04-27	BUY	unknown	ゴトウホールディング株式会社	strategic	2.0M	¥1,098	+0.9%	¥2.2B ($14.2M)
2026-04-27	BUY	unknown	後藤匡啓	strategic	3.6M	¥1,098	+0.9%	¥4.0B ($25.5M)
2026-04-27	BUY	unknown	後藤倫啓	strategic	3.6M	¥1,098	+0.9%	¥4.0B ($25.5M)
2026-04-27	BUY	unknown	後藤秀隆	strategic	1.9M	¥1,098	+0.9%	¥2.1B ($13.3M)
2026-04-24	BUY	unknown	後藤秀隆	unknown	1.9M	¥1,097	+1.0%	¥2.1B ($13.3M)
2026-04-24	SELL	unknown	ゴトウホールディング株式会社	strategic	2.0M	¥1,097	-1.0%	¥2M ($15K)
2026-04-24	SELL	unknown	後藤匡啓	strategic	3.6M	¥1,097	-1.0%	¥5M ($30K)
2026-04-24	SELL	unknown	後藤倫啓	strategic	3.6M	¥1,097	-1.0%	¥5M ($30K)
2026-04-24	SELL	unknown	後藤秀隆	strategic	1.9M	¥1,097	-1.0%	¥2M ($15K)
2025-12-19	BUY	unknown	後藤秀隆	unknown	1.9M	¥1,080	-1.6%	¥2.1B ($13.3M)
2025-12-19	SELL	unknown	後藤秀隆	strategic	1.9M	¥1,080	-1.6%	¥2.1B ($13.3M)
2025-12-19	SELL	unknown	ゴトウホールディング株式会社	strategic	2.0M	¥1,080	-1.6%	¥2.2B ($14.2M)
2025-12-19	SELL	unknown	後藤匡啓	strategic	3.6M	¥1,080	-1.6%	¥3.9B ($25.5M)
2025-12-19	SELL	unknown	後藤倫啓	strategic	3.6M	¥1,080	-1.6%	¥3.9B ($25.5M)
2025-09-25	BUY	unknown	ゴトウホールディング株式会社 Goto Holding Co., Ltd.	strategic	2.0M	¥780	+40.6%	¥1.6B ($10.1M)
2025-09-25	BUY	unknown	後藤秀隆 Hidetaka Goto	unknown	1.9M	¥780	+40.6%	¥1.5B ($9.5M)
2025-09-25	BUY	unknown	ゴトウホールディング株式会社 Goto Holding Co., Ltd.	strategic	2.0M	¥780	+40.6%	¥1.6B ($10.1M)
2025-09-25	BUY	unknown	後藤匡啓 Masahiro Goto	strategic	3.6M	¥780	+40.6%	¥2.8B ($18.1M)
2025-09-25	BUY	unknown	後藤倫啓 Michihiro Goto	strategic	3.6M	¥780	+40.6%	¥2.8B ($18.1M)
2025-09-25	BUY	unknown	後藤秀隆 Hidetaka Goto	unknown	1.9M	¥780	+40.6%	¥1.5B ($9.5M)
2025-09-25	BUY	unknown	後藤匡啓 Masahiro Goto	strategic	3.6M	¥780	+40.6%	¥2.8B ($18.1M)
2025-09-25	BUY	unknown	後藤倫啓 Michihiro Goto	strategic	3.6M	¥780	+40.6%	¥2.8B ($18.1M)
2025-09-25	BUY	unknown	後藤秀隆 Hidetaka Goto	strategic	1.9M	¥780	+40.6%	¥1.5B ($9.5M)
2025-09-25	BUY	unknown	後藤秀隆 Hidetaka Goto	strategic	1.9M	¥780	+40.6%	¥1.5B ($9.5M)
2025-09-11	BUY	unknown	後藤秀隆 Hidetaka Goto	unknown	1.9M	¥731	+50.1%	¥1.4B ($8.9M)
2025-09-11	BUY	unknown	ゴトウホールディング株式会社 Goto Holding Co., Ltd.	strategic	2.0M	¥731	+50.1%	¥1.5B ($9.4M)
2025-09-11	BUY	unknown	後藤匡啓 Masahiro Goto	strategic	3.6M	¥731	+50.1%	¥2.6B ($17.0M)
2025-09-11	BUY	unknown	後藤倫啓 Michihiro Goto	strategic	3.6M	¥731	+50.1%	¥2.6B ($17.0M)
2025-09-11	BUY	unknown	後藤秀隆 Hidetaka Goto	unknown	1.9M	¥731	+50.1%	¥1.4B ($8.9M)
2025-09-11	BUY	unknown	ゴトウホールディング株式会社 Goto Holding Co., Ltd.	strategic	2.0M	¥731	+50.1%	¥1.5B ($9.4M)
2025-09-11	BUY	unknown	後藤匡啓 Masahiro Goto	strategic	3.6M	¥731	+50.1%	¥2.6B ($17.0M)
2025-09-11	BUY	unknown	後藤倫啓 Michihiro Goto	strategic	3.6M	¥731	+50.1%	¥2.6B ($17.0M)
2025-09-11	BUY	unknown	後藤秀隆 Hidetaka Goto	strategic	1.9M	¥731	+50.1%	¥1.4B ($8.9M)
2025-09-11	BUY	unknown	後藤秀隆 Hidetaka Goto	strategic	1.9M	¥731	+50.1%	¥1.4B ($8.9M)
2025-09-01	BUY	unknown	後藤秀隆 Hidetaka Goto	unknown	1.9M	¥735	+49.3%	¥1.4B ($8.9M)
2025-09-01	BUY	unknown	ゴトウホールディング株式会社 Goto Holding Co., Ltd.	strategic	2.0M	¥735	+49.3%	¥1.5B ($9.5M)
2025-09-01	BUY	unknown	後藤匡啓 Masahiro Goto	strategic	3.6M	¥735	+49.3%	¥2.6B ($17.1M)

Showing the 50 most recent of 103 filings.

Frequently asked questions

Who has been buying Matsuya R&D Co.,Ltd stock?: 6 distinct investors have filed 6 disclosed large-shareholding filings in Matsuya R&D Co.,Ltd (7317), most recently on 2026-05-11. 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 Matsuya R&D Co.,Ltd have?: Matsuya R&D Co.,Ltd has 6 buy-side and 37 sell-side disclosures on record, covering ¥105M ($678K) in total reported value, spanning 2021-05-21 to 2026-05-11.
Where does StockDrifts get Matsuya R&D 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 Matsuya R&D Co.,Ltd. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.