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

13 distinct investors have filed 16 disclosed large-shareholding filings in Menicon Co., Ltd. (7780), most recently on 2025-06-13. 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 Menicon Co., Ltd. have?

Menicon Co., Ltd. has 16 buy-side and 17 sell-side disclosures on record, covering ¥10.3B ($66.4M) in total reported value, spanning 2022-05-10 to 2025-06-13.

Where does StockDrifts get Menicon 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.

Menicon Co., Ltd. 7780

Company

株式会社メニコンMenicon Co., Ltd.

Investors

Buys

Total Value

¥10.3B ($66.4M)

Avg Return

-15.91%

Last Filing

2025-06-13

Menicon Co., Ltd. (7780) has 16 disclosed large-shareholding filings and 17 disclosed disposals on record, filed by 13 distinct investors. Together those filings cover ¥10.3B ($66.4M) in reported transaction value. The earliest filing StockDrifts holds for Menicon Co., Ltd. is dated 2022-05-10; the most recent is 2025-06-13. 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 -15.91%, 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
2025-06-13	SELL	unknown	田中淳子 Junko Tanaka	strategic	1.1M	¥1,007	-69.6%	¥108M ($697K)
2025-06-13	SELL	unknown	田中康範 Yasunori Tanaka	strategic	1.1M	¥1,007	-69.6%	¥108M ($697K)
2025-06-13	SELL	unknown	株式会社トヨトミ Toyotomi Co., Ltd.	strategic	4.0M	¥1,007	-69.6%	¥31M ($199K)
2025-02-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.7M	¥1,366	+25.0%	¥377M ($2.4M)
2025-02-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	62.0K	¥1,366	+25.0%	¥53M ($340K)
2025-02-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	400.0K	¥1,366	+25.0%	¥2.1B ($13.5M)
2025-02-07	BUY	unknown	みずほインターナショナル Mizuho International plc	unknown	0	¥1,366	+25.0%	-
2024-11-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.4M	¥1,538	+11.1%	¥3.6B ($23.1M)
2024-11-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	180.5K	¥1,538	-11.1%	¥908M ($5.9M)
2024-11-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	782.2K	¥1,538	-11.1%	¥130M ($837K)
2024-11-20	BUY	Market Buy	田中英成 Hidenari Tanaka	activist	2.5M	¥1,604	+6.5%	¥1.3B ($8.2M)
2024-11-20	SELL	Market Buy	株式会社マミ MAMI CORPORATION	strategic	1.7M	¥1,604	-6.5%	¥1.1B ($7.0M)
2024-02-22	SELL	Market Buy	グローバル・アルファ・キャピタル・マネージメント・エルティーディー(Global Alpha Capital Management Ltd.) Global Alpha Capital Management Ltd.	passive	3.7M	¥1,697	-0.7%	¥1.5B ($9.6M)
2023-12-12	BUY	Market Buy	グローバル・アルファ・キャピタル・マネージメント・エルティーディー(Global Alpha Capital Management Ltd.) Global Alpha Capital Management Ltd.	passive	4.6M	¥2,274	-24.9%	¥1.8B ($11.5M)
2023-11-22	BUY	subscription	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	2.4M	¥2,110	-19.1%	¥5.0B ($32.4M)
2023-11-22	BUY	subscription	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	400.0K	¥2,110	-19.1%	¥844M ($5.4M)
2023-11-22	BUY	subscription	みずほインターナショナル Mizuho International plc	other	0	¥2,110	-19.1%	-
2023-11-22	BUY	subscription	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.5M	¥2,110	-19.1%	¥3.1B ($19.7M)
2023-07-04	BUY	unknown	田中英成 Hidenari Tanaka	activist	1.7M	¥2,498.5	-31.6%	¥4.2B ($27.3M)
2023-07-04	SELL	unknown	株式会社マミ MAMI CORPORATION	strategic	2.4M	¥2,498.5	+31.6%	¥38M ($247K)
2023-06-28	BUY	acquisition	グローバル・アルファ・キャピタル・マネージメント・エルティーディー(Global Alpha Capital Management Ltd.) Global Alpha Capital Management Ltd.	passive	3.8M	¥2,536.5	-32.7%	¥9.7B ($62.7M)
2023-02-03	BUY	unknown	田中英成 Hidenari Tanaka	activist	1.7M	¥2,882	-40.7%	¥4.9B ($31.5M)
2023-02-03	SELL	unknown	株式会社マミ MAMI CORPORATION	strategic	2.4M	¥2,882	+40.7%	¥859M ($5.5M)
2023-01-11	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	864.3K	¥2,780	-38.6%	¥2.4B ($15.5M)
2023-01-11	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	3.3M	¥2,780	-38.6%	¥9.1B ($58.8M)
2023-01-11	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	4.2K	¥2,780	-38.6%	¥12M ($75K)
2022-11-04	SELL	unknown	株式会社マミ MAMI CORPORATION	strategic	2.7M	¥2,348	+27.3%	¥72M ($463K)
2022-11-04	BUY	unknown	田中英成 Hidenari Tanaka	activist	1.7M	¥2,348	-27.3%	¥4.0B ($25.7M)
2022-11-04	BUY	unknown	田中英成 Hidenari Tanaka	activist	1.7M	¥2,348	-27.3%	¥4.0B ($25.7M)
2022-11-04	SELL	unknown	株式会社マミ MAMI CORPORATION	strategic	2.7M	¥2,348	+27.3%	¥72M ($464K)
2022-08-30	SELL	unknown	株式会社マミ MAMI CORPORATION	strategic	2.8M	¥3,340	+48.9%	¥2.6B ($16.6M)
2022-08-30	BUY	unknown	田中英成 Hidenari Tanaka	activist	1.7M	¥3,340	-48.9%	¥26M ($165K)
2022-08-30	BUY	unknown	田中英成 Hidenari Tanaka	activist	1.7M	¥3,340	-48.9%	¥26M ($165K)
2022-08-30	SELL	unknown	株式会社マミ MAMI CORPORATION	strategic	2.8M	¥3,340	+48.9%	¥2.6B ($16.6M)
2022-05-10	SELL	unknown	田中英成 Hidenari Tanaka	activist	1.7M	¥2,615	+34.7%	¥1.2B ($7.6M)
2022-05-10	SELL	unknown	田中英成 Hidenari Tanaka	activist	1.7M	¥2,615	+34.7%	¥1.2B ($7.6M)
2022-05-10	SELL	unknown	株式会社マミ MAMI CORPORATION	strategic	3.5M	¥2,615	+34.7%	¥859M ($5.5M)
2022-05-10	SELL	unknown	株式会社マミ MAMI CORPORATION	strategic	3.5M	¥2,615	+34.7%	¥859M ($5.5M)

Frequently asked questions

Who has been buying Menicon Co., Ltd. stock?: 13 distinct investors have filed 16 disclosed large-shareholding filings in Menicon Co., Ltd. (7780), most recently on 2025-06-13. 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 Menicon Co., Ltd. have?: Menicon Co., Ltd. has 16 buy-side and 17 sell-side disclosures on record, covering ¥10.3B ($66.4M) in total reported value, spanning 2022-05-10 to 2025-06-13.
Where does StockDrifts get Menicon 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 Menicon Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.