Who has been buying Yomeishu Seizo Co., Ltd. stock?

13 distinct investors have filed 19 disclosed large-shareholding filings in Yomeishu Seizo Co., Ltd. (2540), most recently on 2026-04-21. 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 Yomeishu Seizo Co., Ltd. have?

Yomeishu Seizo Co., Ltd. has 19 buy-side and 11 sell-side disclosures on record, covering ¥45.7B ($294.9M) in total reported value, spanning 2021-08-30 to 2026-04-21.

Where does StockDrifts get Yomeishu Seizo 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.

Yomeishu Seizo Co., Ltd. 2540

Company

養命酒製造株式会社Yomeishu Seizo Co., Ltd.

Investors

Buys

Total Value

¥45.7B ($294.9M)

Avg Return

+38.26%

Last Filing

2026-04-21

Yomeishu Seizo Co., Ltd. (2540) has 19 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 13 distinct investors. Together those filings cover ¥45.7B ($294.9M) in reported transaction value. The earliest filing StockDrifts holds for Yomeishu Seizo Co., Ltd. is dated 2021-08-30; the most recent is 2026-04-21. 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 +38.26%, 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
2026-04-21	BUY	Market Buy	野村アセットマネジメント株式会社	other	201.9K	¥4,020	+0.1%	¥86M ($556K)
2026-04-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	41.7K	¥4,020	-0.1%	¥3.1B ($20.3M)
2026-04-21	SELL	unknown	野村證券株式会社	other	13.9K	¥4,020	-0.1%	¥20M ($128K)
2026-04-20	SELL	Market Buy	三菱UFJモルガン・スタンレー証券株式会社	other	3.0K	¥4,020	-0.1%	¥139M ($899K)
2026-04-20	SELL	unknown	三菱UFJモルガン・スタンレー証券株式会社	other	3.0K	¥4,020	-0.1%	¥139M ($899K)
2026-04-20	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	43.6K	¥4,020	+0.1%	¥80M ($514K)
2026-04-20	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	89.6K	¥4,020	-0.1%	¥2.8B ($17.8M)
2026-04-20	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	43.6K	¥4,020	+0.1%	¥80M ($514K)
2026-04-20	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	89.6K	¥4,020	-0.1%	¥2.8B ($17.8M)
2026-04-15	BUY	unknown	湯沢株式会社	activist	4.6M	¥4,020	+0.1%	¥18.7B ($120.4M)
2026-04-15	BUY	unknown	株式会社レノ	activist	6.9M	¥4,020	+0.1%	¥27.8B ($179.5M)
2026-04-15	SELL	unknown	野村幸弘	unknown	0	¥4,020	-0.1%	¥13M ($86K)
2026-04-03	BUY	Market Buy	野村證券株式会社	other	18.3K	¥4,045	-0.7%	¥73M ($474K)
2026-04-03	BUY	Market Buy	野村アセットマネジメント株式会社	other	180.6K	¥4,045	-0.7%	¥731M ($4.7M)
2026-04-03	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	822.9K	¥4,045	-0.7%	¥654M ($4.2M)
2026-03-19	BUY	unknown	野村アセットマネジメント株式会社	other	179.3K	¥4,040	-0.5%	¥721M ($4.7M)
2026-03-19	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	662.3K	¥4,040	-0.5%	¥2.7B ($17.2M)
2026-03-19	BUY	unknown	野村證券株式会社	other	-600	¥4,040	-0.5%	¥2M ($16K)
2026-03-03	BUY	Market Buy	野村幸弘	activist	3.7K	¥4,045	+0.6%	¥15M ($96K)
2026-03-03	BUY	Market Buy	湯沢株式会社	activist	4.6M	¥4,045	-0.6%	¥18.7B ($120.4M)
2025-10-21	SELL	Market Buy	野村幸弘 Yukihiro Nomura	activist	3.7K	¥4,300	+6.5%	¥1.2B ($7.6M)
2025-10-21	BUY	Market Buy	湯沢株式会社 Yuzawa Co., Ltd.	activist	4.6M	¥4,300	-6.5%	¥5.7B ($36.6M)
2025-03-28	BUY	unknown	野村幸弘 Yukihiro Nomura	activist	277.1K	¥2,815	+42.8%	¥780M ($5.0M)
2025-03-28	BUY	unknown	大正製薬ホールディングス株式会社 Taisho Pharmaceutical Holdings Co., Ltd.	strategic	0	¥2,815	+42.8%	¥9.3B ($59.9M)
2025-03-28	BUY	unknown	大正製薬ホールディングス株式会社 Taisho Pharmaceutical Holdings Co., Ltd.	strategic	0	¥2,815	+42.8%	¥9.3B ($59.9M)
2025-03-28	BUY	unknown	湯沢株式会社 Yuzawa Co., Ltd.	activist	3.3M	¥2,815	+42.8%	¥9.3B ($59.9M)
2024-11-07	BUY	unknown	大正製薬ホールディングス株式会社 Taisho Pharmaceutical Holdings Co., Ltd.	corporate	0	¥2,493	+61.3%	¥8.2B ($53.1M)
2024-11-07	BUY	unknown	大正製薬ホールディングス株式会社 Taisho Pharmaceutical Holdings Co., Ltd.	other	3.3M	¥2,493	+61.3%	¥8.2B ($53.1M)
2021-11-15	BUY	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	23.4K	¥1,808	+122.3%	¥42M ($273K)
2021-11-15	BUY	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	775.4K	¥1,808	+122.3%	¥1.4B ($9.0M)
2021-11-15	BUY	Market Buy	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	38.5K	¥1,808	+122.3%	¥70M ($449K)
2021-08-30	SELL	unknown	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	33.7K	¥1,839	-118.6%	¥1.2B ($7.4M)
2021-08-30	SELL	unknown	三菱UFJ証券ホールディングス株式会社 Mitsubishi UFJ Securities Holdings Co., Ltd.	unknown	0	¥1,839	-118.6%	¥18M ($117K)
2021-08-30	BUY	unknown	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	783.1K	¥1,839	+118.6%	¥1.4B ($9.2M)
2021-08-30	SELL	unknown	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	unknown	0	¥1,839	-118.6%	¥261M ($1.7M)

Frequently asked questions

Who has been buying Yomeishu Seizo Co., Ltd. stock?: 13 distinct investors have filed 19 disclosed large-shareholding filings in Yomeishu Seizo Co., Ltd. (2540), most recently on 2026-04-21. 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 Yomeishu Seizo Co., Ltd. have?: Yomeishu Seizo Co., Ltd. has 19 buy-side and 11 sell-side disclosures on record, covering ¥45.7B ($294.9M) in total reported value, spanning 2021-08-30 to 2026-04-21.
Where does StockDrifts get Yomeishu Seizo 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 Yomeishu Seizo Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.