Who has been buying Shin-Etsu Chemical Co., Ltd. stock?

27 distinct investors have filed 31 disclosed large-shareholding filings in Shin-Etsu Chemical Co., Ltd. (4063), most recently on 2025-09-19. 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 Shin-Etsu Chemical Co., Ltd. have?

Shin-Etsu Chemical Co., Ltd. has 31 buy-side and 32 sell-side disclosures on record, covering ¥3.20T ($20.6B) in total reported value, spanning 2021-04-22 to 2025-09-19.

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.

Shin-Etsu Chemical Co., Ltd. 4063

Company

信越化学工業株式会社Shin-Etsu Chemical Co., Ltd.

Investors

Buys

Total Value

¥3.20T ($20.6B)

Avg Return

+60.22%

Last Filing

2025-09-19

Shin-Etsu Chemical Co., Ltd. (4063) has 31 disclosed large-shareholding filings and 32 disclosed disposals on record, filed by 27 distinct investors. Together those filings cover ¥3.20T ($20.6B) in reported transaction value. The earliest filing StockDrifts holds for Shin-Etsu Chemical Co., Ltd. is dated 2021-04-22; the most recent is 2025-09-19. Across these filings the average return since disclosure is +60.22%, 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
2026-09-04	SELL	unknown	野村アセットマネジメント株式会社	other	117.8M	¥5,786	-1.8%	¥11.5B ($74.1M)
2026-09-04	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-248.6K	¥5,786	+0.0%	-
2026-09-04	BUY	unknown	野村證券株式会社	other	4.4M	¥5,786	-	¥25.6B ($165.4M)
2026-08-06	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	23.6M	¥6,167	-4.5%	¥144.4B ($931.9M)
2026-08-06	SELL	unknown	野村アセットマネジメント株式会社	other	119.6M	¥6,167	+4.5%	¥2.4B ($15.8M)
2026-08-06	SELL	unknown	野村證券株式会社	other	-17.0M	¥6,163	+0.0%	-
2025-09-19	BUY	Market Buy	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	54.3M	¥4,632	+27.1%	¥20.2B ($130.5M)
2025-09-19	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	55.6M	¥4,632	+27.1%	¥12.9B ($83.0M)
2025-08-21	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	314.2K	¥4,604	-27.9%	¥3.5T ($22.4B)
2025-08-21	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	276.2K	¥4,604	-	¥1.3B ($8.2M)
2025-08-21	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	120.1M	¥4,604	+27.9%	¥127.0B ($819.6M)
2025-08-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	8.0M	¥4,379	+34.5%	¥34.9B ($225.2M)
2025-08-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	92.4M	¥4,379	+34.5%	¥404.7B ($2.6B)
2025-07-22	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	4.4M	¥4,737	-	¥20.9B ($134.9M)
2025-07-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	88.5M	¥4,737	+24.3%	¥413.6B ($2.7B)
2025-07-04	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	122.5M	¥4,874	+20.8%	¥597.0B ($3.9B)
2025-06-05	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	3.3M	¥4,522	-30.2%	¥538.6B ($3.5B)
2025-06-05	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.3M	¥4,522	-	-
2025-06-05	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	44.8M	¥4,522	+30.2%	¥197.6B ($1.3B)
2025-03-17	SELL	negotiated	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	1.9M	¥4,438	-32.7%	¥2.6B ($17.1M)
2025-03-17	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	9.5M	¥4,438	-32.7%	¥3.5T ($22.7B)
2025-03-17	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	46.0M	¥4,438	-32.7%	¥56.4B ($363.7M)
2025-03-17	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	27.5M	¥4,438	+32.7%	¥6.2B ($39.8M)
2024-04-22	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	82.2M	¥6,116	-3.7%	¥496.9B ($3.2B)
2024-04-22	SELL	Market Buy	キャピタル・インターナショナル・インク(Capital International Capital International, Inc.	passive	3.8M	¥6,116	+3.7%	¥3.7B ($23.7M)
2024-04-22	SELL	Market Buy	キャピタル・インターナショナル株式会社 Capital International Co., Ltd.	passive	2.5M	¥6,116	+3.7%	¥13.5B ($86.9M)
2024-04-22	SELL	Market Buy	キャピタル・グループ・プライベート・クライアント・サービシーズ・インク(Capital Group Private Client Services Capital Group Private Client Services, Inc.	passive	1.7M	¥6,116	+3.7%	¥4.9B ($31.6M)
2023-11-07	BUY	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	50.9M	¥4,851	+21.4%	¥246.7B ($1.6B)
2023-11-07	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	53.8M	¥4,851	+21.4%	¥260.8B ($1.7B)
2023-10-16	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	17.7M	¥4,398	-33.9%	¥12.5B ($80.4M)
2023-10-16	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	60.0M	¥4,398	-33.9%	¥89.0B ($574.3M)
2023-10-16	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	26.6M	¥4,398	+33.9%	¥2.7B ($17.2M)
2023-10-16	BUY	negotiated	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	2.5M	¥4,398	-	¥11.2B ($72.3M)
2023-10-05	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	48.3M	¥4,288	-37.3%	¥85.9B ($554.4M)
2023-10-05	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	52.0M	¥4,288	-37.3%	¥868M ($5.6M)
2023-09-11	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	103.5M	¥4,578	+28.6%	¥467.9B ($3.0B)
2023-09-11	SELL	Market Buy	キャピタル・インターナショナル・インク Capital International Inc.	passive	4.5M	¥4,578	-28.6%	¥927M ($6.0M)
2023-09-11	SELL	Market Buy	キャピタル・インターナショナル株式会社 Capital International Co., Ltd.	passive	4.7M	¥4,578	-28.6%	¥8.3B ($53.8M)
2023-09-11	BUY	Market Buy	キャピタル・グループ・プライベート・クライアント・サービシーズ・インク(Capital Group Private Client Services Capital Group Private Client Services, Inc.	passive	2.4M	¥4,578	-	-
2023-09-05	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	41.1M	¥4,777	+23.3%	¥64.8B ($418.0M)
2023-09-05	SELL	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	4.7M	¥4,777	-23.3%	¥7.7B ($49.9M)
2023-09-05	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	4.5M	¥4,777	+23.3%	¥1.9B ($12.5M)
2023-09-05	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	11.5M	¥4,777	+23.3%	¥10.6B ($68.6M)
2023-09-05	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	33.4M	¥4,777	+23.3%	¥27.1B ($174.7M)
2023-09-05	BUY	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	24.6M	¥4,777	+23.3%	¥3.9B ($25.0M)
2023-09-05	SELL	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	2.3M	¥4,777	-23.3%	¥2.9B ($18.7M)
2023-02-22	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	24.7M	¥3,794	+55.2%	¥16.0B ($103.1M)
2023-02-22	SELL	Market Buy	キャピタル・インターナショナル・インク Capital International Inc.	passive	931.1K	¥3,794	-55.2%	¥922M ($5.9M)
2023-02-22	SELL	Market Buy	キャピタル・インターナショナル株式会社 Capital International Co., Ltd.	passive	1.3M	¥3,794	-55.2%	¥1.2B ($7.9M)
2023-02-22	SELL	Market Buy	キャピタル・グループ・プライベート・クライアント・サービシーズ・インク(Capital Group Private Client Services Capital Group Private Client Services, Inc.	passive	485.5K	¥3,794	-55.2%	¥154M ($991K)

Showing the 50 most recent of 78 filings.

Frequently asked questions

Who has been buying Shin-Etsu Chemical Co., Ltd. stock?: 27 distinct investors have filed 31 disclosed large-shareholding filings in Shin-Etsu Chemical Co., Ltd. (4063), most recently on 2025-09-19. 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 Shin-Etsu Chemical Co., Ltd. have?: Shin-Etsu Chemical Co., Ltd. has 31 buy-side and 32 sell-side disclosures on record, covering ¥3.20T ($20.6B) in total reported value, spanning 2021-04-22 to 2025-09-19.
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.