Who has been buying Sekisui Jushi Corporation stock?

11 distinct investors have filed 15 disclosed large-shareholding filings in Sekisui Jushi Corporation (4212), most recently on 2026-04-08. 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 Sekisui Jushi Corporation have?

Sekisui Jushi Corporation has 15 buy-side and 8 sell-side disclosures on record, covering ¥20.9B ($135.0M) in total reported value, spanning 2021-09-24 to 2026-04-08.

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.

Sekisui Jushi Corporation 4212

Company

積水樹脂株式会社Sekisui Jushi Corporation

Investors

Buys

Total Value

¥20.9B ($135.0M)

Avg Return

-0.46%

Last Filing

2026-04-08

Sekisui Jushi Corporation (4212) has 15 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥20.9B ($135.0M) in reported transaction value. The earliest filing StockDrifts holds for Sekisui Jushi Corporation is dated 2021-09-24; the most recent is 2026-04-08. Across these filings the average return since disclosure is -0.46%, 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
2026-08-06	SELL	unknown	野村アセットマネジメント株式会社	other	1.5M	¥2,928	-2.5%	¥1.2B ($8.1M)
2026-08-06	BUY	Market Buy	Nomura Asset Management Deutschland KAG mbH	passive	34.0K	¥2,928	-	¥100M ($642K)
2026-06-19	BUY	Market Buy	ニッポン・アクティブ・バリュー・ファンド NIPPON ACTIVE VALUE FUND PLC	activist	2.0M	¥2,373	+26.4%	¥257M ($1.7M)
2026-06-19	BUY	Market Buy	エヌエーブイエフ・セレクト・マスター・ファンド・エルピーFund LP) NAVF Select (Master	activist	870.2K	¥2,373	+26.4%	¥513M ($3.3M)
2026-06-19	BUY	negotiated	ダルトン・インベストメンツ・インク Dalton Investments, Inc.	activist	51.6K	¥2,373	-	-
2026-06-19	BUY	Market Buy	ニッポン・アクティブ・バリュー・ファンド NIPPON ACTIVE VALUE FUND PLC	activist	2.0M	¥2,373	+26.4%	¥257M ($1.7M)
2026-06-19	BUY	Market Buy	エヌエーブイエフ・セレクト・マスター・ファンド・エルピーFund LP) NAVF Select (Master	activist	870.2K	¥2,373	+26.4%	¥513M ($3.3M)
2026-06-19	BUY	negotiated	ダルトン・インベストメンツ・インク Dalton Investments, Inc.	activist	51.6K	¥2,373	-	-
2026-06-03	BUY	Market Buy	ニッポン・アクティブ・バリュー・ファンド NIPPON ACTIVE VALUE FUND PLC	activist	1.9M	¥2,078	+44.4%	¥403M ($2.6M)
2026-06-03	BUY	Market Buy	エヌエーブイエフ・セレクト・マスター・ファンド・エルピーFund LP) NAVF Select (Master	activist	656.7K	¥2,078	+44.4%	¥238M ($1.5M)
2026-06-03	BUY	Market Buy	ダルトン・インベストメンツ・インク Dalton Investments, Inc.	activist	51.6K	¥2,078	+44.4%	¥73M ($469K)
2026-05-15	BUY	Market Buy	ニッポン・アクティブ・バリュー・ファンド NIPPON ACTIVE VALUE FUND PLC	activist	1.7M	¥2,161	+38.8%	¥392M ($2.5M)
2026-05-15	BUY	Market Buy	エヌエーブイエフ・セレクト・マスター・ファンド・エルピーFund LP) NAVF Select (Master	activist	540.7K	¥2,161	+38.8%	¥289M ($1.9M)
2026-05-15	BUY	Market Buy	ダルトン・インベストメンツ・インク Dalton Investments, Inc.	activist	15.3K	¥2,161	+38.8%	¥34M ($222K)
2026-04-08	BUY	Market Buy	ニッポン・アクティブ・バリュー・ファンド NIPPON ACTIVE VALUE FUND PLC	activist	1.5M	¥2,276	+31.8%	¥43M ($280K)
2026-04-08	BUY	Market Buy	エヌエーブイエフ・セレクト・マスター・ファンド・エルピーFund LP) NAVF Select (Master	activist	406.9K	¥2,276	+31.8%	¥14M ($93K)
2026-04-08	SELL	Market Buy	ダルトン・インベストメンツ・インク(Dalton Investments	activist	0	¥2,276	-31.8%	¥51M ($327K)
2026-03-05	SELL	unknown	野村アセットマネジメント株式会社	other	1.9M	¥2,437	-23.1%	¥675M ($4.4M)
2026-03-05	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	24.9K	¥2,437	-23.1%	¥54M ($350K)
2025-10-21	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	48.1K	¥2,089	-	¥100M ($648K)
2025-10-21	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.2M	¥2,089	+43.6%	¥611M ($3.9M)
2025-01-10	BUY	Market Buy	エヌエーブイエフ・セレクト・エルエルシー NAVF Select LLC	activist	400.0K	¥2,040	+47.1%	¥389M ($2.5M)
2025-01-10	BUY	Market Buy	ダルトン・インベストメンツ・インク(Dalton Investments Dalton Investments, Inc.	activist	22.7K	¥2,040	-	¥46M ($299K)
2025-01-10	BUY	Market Buy	ニッポン・アクティブ・バリュー・ファンド NIPPON ACTIVE VALUE FUND PLC	activist	1.5M	¥2,040	+47.1%	¥208M ($1.3M)
2025-01-10	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	1.6M	¥2,040	-47.1%	¥720M ($4.6M)
2024-05-22	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.0M	¥2,356	-27.3%	¥1.0B ($6.7M)
2024-05-21	BUY	unknown	ニッポン・アクティブ・バリュー・ファンド NIPPON ACTIVE VALUE FUND PLC	activist	1.5M	¥2,339	+28.3%	¥3.4B ($22.1M)
2024-05-21	BUY	unknown	エヌエーブイエフ・セレクト・エルエルシー NAVF Select LLC	activist	219.8K	¥2,339	+28.3%	¥514M ($3.3M)
2024-03-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	26.7K	¥2,431	-23.4%	¥49M ($313K)
2024-03-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.0M	¥2,431	+23.4%	¥4.7B ($30.3M)
2024-01-10	BUY	unknown	積水化学工業株式会社 SEKISUI CHEMICAL CO.,LTD.	corporate	10.6M	¥2,483	-	¥1.2B ($8.0M)
2023-11-06	BUY	Market Buy	モラント・ライト・マネジメント・リミテッド(Morant Wright Management Limited) Morant Wright Management Limited	passive	1.9M	-	-	-
2023-11-06	BUY	Market Buy	モラント・ライト・マネジメント・リミテッド(Morant Wright Management Limited) Morant Wright Management Limited	passive	1.9M	¥2,406	+24.7%	¥4.7B ($30.2M)
2023-10-06	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.4M	¥2,392	+25.4%	¥1.5B ($9.8M)
2023-09-21	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	47.2K	¥2,348	-	¥111M ($715K)
2023-09-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.3M	¥2,348	+27.8%	¥1.1B ($7.3M)
2023-08-07	BUY	unknown	積水化学工業株式会社 SEKISUI CHEMICAL CO.,LTD.	corporate	1.5M	¥2,422	+23.9%	¥3.5B ($22.6M)
2023-08-07	SELL	unknown	積水化学工業株式会社 SEKISUI CHEMICAL CO.,LTD.	corporate	1.5M	¥2,422	-23.9%	¥17.5B ($112.8M)
2023-08-07	BUY	unknown	九州セキスイ商事インフラテック株式会社 Kyushu Sekisui Shoji Infratech Co., Ltd.	other	66.7K	¥2,422	+23.9%	¥40M ($258K)
2022-12-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.3M	¥1,748	+71.6%	¥4.0B ($26.0M)
2021-11-22	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.3M	¥2,110	+42.2%	¥5.0B ($31.9M)
2021-09-24	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.1M	¥2,214	-35.5%	¥1.3B ($8.2M)

Frequently asked questions

Who has been buying Sekisui Jushi Corporation stock?: 11 distinct investors have filed 15 disclosed large-shareholding filings in Sekisui Jushi Corporation (4212), most recently on 2026-04-08. 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 Sekisui Jushi Corporation have?: Sekisui Jushi Corporation has 15 buy-side and 8 sell-side disclosures on record, covering ¥20.9B ($135.0M) in total reported value, spanning 2021-09-24 to 2026-04-08.
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.