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

16 distinct investors have filed 57 disclosed large-shareholding filings in Seiren Co.,Ltd. (3569), most recently on 2024-11-14. 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 Seiren Co.,Ltd. have?

Seiren Co.,Ltd. has 57 buy-side and 45 sell-side disclosures on record, covering ¥147.0B ($948.4M) in total reported value, spanning 2021-03-24 to 2024-11-14.

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.

Seiren Co.,Ltd. 3569

Company

セーレン株式会社Seiren Co.,Ltd.

Investors

Buys

Total Value

¥147.0B ($948.4M)

Avg Return

+37.11%

Last Filing

2024-11-14

Seiren Co.,Ltd. (3569) has 57 disclosed large-shareholding filings and 45 disclosed disposals on record, filed by 16 distinct investors. Together those filings cover ¥147.0B ($948.4M) in reported transaction value. The earliest filing StockDrifts holds for Seiren Co.,Ltd. is dated 2021-03-24; the most recent is 2024-11-14. Across these filings the average return since disclosure is +37.11%, 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
2026-08-28	SELL	unknown	SMBC日興証券株式会社	other	17.7K	¥3,430	+2.8%	¥1.7B ($10.9M)
2026-08-28	BUY	unknown	株式会社三井住友銀行	other	248.8K	¥3,430	-	-
2026-08-28	BUY	Market Buy	三井住友DSアセットマネジメント株式会社	passive	7.5M	¥3,430	-2.8%	¥2.6B ($16.6M)
2024-11-14	BUY	unknown	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	other	453.0K	¥2,654	+25.7%	¥108.9B ($702.5M)
2024-11-14	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	other	4.3M	¥2,654	+25.7%	¥566M ($3.7M)
2024-09-20	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	1.5M	¥2,731	-22.1%	¥1.6B ($10.4M)
2024-09-20	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	845.0K	¥2,731	-22.1%	¥741M ($4.8M)
2024-09-19	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	478.4K	¥2,726	+22.3%	¥1.3B ($8.1M)
2024-09-19	BUY	unknown	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥2,726	-	-
2024-09-19	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	590.5K	¥2,726	-	-
2024-09-19	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	308.4K	¥2,726	+22.3%	¥787M ($5.1M)
2024-09-06	BUY	unknown	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	other	4.3M	¥2,380	+40.1%	¥10.2B ($65.6M)
2024-09-04	BUY	subscription	野村證券株式会社 Nomura Securities Co.,Ltd.	other	2.2M	¥2,342	-	-
2024-09-04	SELL	subscription	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.6M	¥2,342	-42.4%	¥1.3B ($8.5M)
2024-09-04	BUY	subscription	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥2,342	-	-
2024-09-04	BUY	subscription	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	590.1K	¥2,342	-	-
2024-08-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	2.2M	¥2,285	-46.0%	¥2.0B ($13.1M)
2024-08-21	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.2M	¥2,285	+46.0%	¥2.2B ($14.3M)
2024-08-21	BUY	unknown	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥2,285	-	-
2024-08-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	586.6K	¥2,285	-	-
2024-08-05	BUY	subscription	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.2M	¥2,133	+56.4%	¥14M ($89K)
2024-08-05	BUY	subscription	野村證券株式会社 Nomura Securities Co.,Ltd.	other	3.2M	¥2,133	+56.4%	¥28M ($178K)
2024-08-05	BUY	subscription	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥2,133	-	-
2024-08-05	SELL	subscription	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	585.2K	¥2,133	-56.4%	¥14M ($89K)
2024-06-06	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	248.8K	¥2,426	-	-
2024-06-06	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	508.9K	¥2,426	-	¥1.2B ($8.0M)
2024-06-06	BUY	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	6.8M	¥2,426	+37.5%	¥768M ($5.0M)
2024-05-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.2M	¥2,558	+30.4%	¥430M ($2.8M)
2024-05-07	BUY	unknown	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥2,558	-	-
2024-05-07	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	3.2M	¥2,558	-30.4%	¥298M ($1.9M)
2024-05-07	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	596.0K	¥2,558	-30.4%	¥1.6B ($10.6M)
2024-04-04	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	3.3M	¥2,697	-23.7%	¥3.7B ($23.7M)
2024-04-04	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.0M	¥2,697	+23.7%	¥209M ($1.3M)
2024-04-04	BUY	unknown	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥2,697	-	-
2024-04-04	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.2M	¥2,697	+23.7%	¥1.8B ($11.6M)
2024-03-21	SELL	subscription	野村證券株式会社 Nomura Securities Co.,Ltd.	other	4.9M	¥2,610	-27.8%	¥506M ($3.3M)
2024-03-21	SELL	subscription	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	971.6K	¥2,610	-27.8%	¥843M ($5.4M)
2024-03-21	BUY	subscription	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥2,610	-	-
2024-03-21	BUY	subscription	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	567.9K	¥2,610	+27.8%	¥304M ($2.0M)
2024-03-18	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	6.5M	¥2,574	+29.6%	¥1.7B ($10.7M)
2024-03-18	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	248.8K	¥2,574	-	-
2024-03-18	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	28.6K	¥2,574	+29.6%	¥6.2B ($39.9M)
2024-03-07	SELL	subscription	株式会社みずほ銀行 Mizuho Bank, Ltd.	unknown	0	¥2,495	-33.7%	¥1.0B ($6.7M)
2024-03-07	BUY	subscription	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	314.5K	¥2,495	+33.7%	¥16M ($104K)
2024-03-07	SELL	subscription	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	2.3M	¥2,495	-33.7%	¥677M ($4.4M)
2024-03-07	BUY	subscription	みずほインターナショナル Mizuho International plc	other	0	¥2,495	-	-
2024-03-07	BUY	subscription	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	205.5K	¥2,495	+33.7%	¥32M ($208K)
2024-02-20	SELL	subscription	野村證券株式会社 Nomura Securities Co.,Ltd.	other	5.1M	¥2,450	-36.1%	¥2.0B ($12.9M)
2024-02-20	BUY	subscription	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.3M	¥2,450	+36.1%	¥2.7B ($17.3M)
2024-02-20	BUY	subscription	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥2,450	-	-

Showing the 50 most recent of 147 filings.

Frequently asked questions

Who has been buying Seiren Co.,Ltd. stock?: 16 distinct investors have filed 57 disclosed large-shareholding filings in Seiren Co.,Ltd. (3569), most recently on 2024-11-14. 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 Seiren Co.,Ltd. have?: Seiren Co.,Ltd. has 57 buy-side and 45 sell-side disclosures on record, covering ¥147.0B ($948.4M) in total reported value, spanning 2021-03-24 to 2024-11-14.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.