Who has been buying Japan Pure Chemical Co., Ltd. stock?

10 distinct investors have filed 27 disclosed large-shareholding filings in Japan Pure Chemical Co., Ltd. (4973), most recently on 2026-03-18. 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 Japan Pure Chemical Co., Ltd. have?

Japan Pure Chemical Co., Ltd. has 27 buy-side and 17 sell-side disclosures on record, covering ¥5.8B ($37.6M) in total reported value, spanning 2021-03-18 to 2026-03-18.

Where does StockDrifts get Japan Pure Chemical 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.

Japan Pure Chemical Co., Ltd. 4973

Company

日本高純度化学株式会社Japan Pure Chemical Co., Ltd.

Investors

Buys

Total Value

¥5.8B ($37.6M)

Avg Return

+55.06%

Last Filing

2026-03-18

Japan Pure Chemical Co., Ltd. (4973) has 27 disclosed large-shareholding filings and 17 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥5.8B ($37.6M) in reported transaction value. The earliest filing StockDrifts holds for Japan Pure Chemical Co., Ltd. is dated 2021-03-18; the most recent is 2026-03-18. 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 +55.06%, 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
2026-07-29	SELL	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー(Hibiki Path Advisors SPC) Hibiki Path Advisors SPC	activist	303.3K	¥4,240	-15.3%	¥334M ($2.2M)
2026-07-24	SELL	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー(Hibiki Path Advisors SPC) Hibiki Path Advisors SPC	activist	382.4K	¥4,425	-10.5%	¥314M ($2.0M)
2026-07-09	SELL	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー(Hibiki Path Advisors SPC) Hibiki Path Advisors SPC	activist	453.1K	¥5,020	+7.5%	¥384M ($2.5M)
2026-07-06	BUY	Market Buy	ブラックロック・フランス・エスエーエス BlackRock France SAS	passive	12.6K	¥5,310	-11.9%	¥26M ($166K)
2026-07-06	BUY	Market Buy	ブラックロック(ルクセンブルグ)エス・エーS.A.) BlackRock (Luxembourg	passive	166.5K	¥5,310	-11.9%	¥222M ($1.4M)
2026-07-06	BUY	Market Buy	ブラックロック・ジャパン株式会社	passive	229.9K	¥5,310	-11.9%	¥222M ($1.4M)
2026-07-01	SELL	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー(Hibiki Path Advisors SPC) Hibiki Path Advisors SPC	activist	529.7K	¥5,650	+24.2%	¥452M ($2.9M)
2026-06-26	SELL	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー(Hibiki Path Advisors SPC) Hibiki Path Advisors SPC	activist	609.6K	¥5,640	+21.5%	¥390M ($2.5M)
2026-06-25	SELL	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー(Hibiki Path Advisors SPC) Hibiki Path Advisors SPC	activist	678.7K	¥5,830	+24.1%	¥456M ($2.9M)
2026-06-23	SELL	unknown	ひびき・パース・アドバイザーズ2・エスピーシー Hibiki Path Advisors 2 SPC	unknown	0	¥5,930	+19.6%	¥514M ($3.3M)
2026-06-23	SELL	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	757.1K	¥5,930	+19.6%	¥65M ($418K)
2026-06-08	SELL	Market Buy	ひびき・パース・アドバイザーズ2・エスピーシー Hibiki Path Advisors 2 SPC	activist	87.0K	¥5,130	-7.4%	¥324M ($2.1M)
2026-06-08	BUY	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	768.3K	¥5,130	+7.4%	¥3.9B ($25.4M)
2026-06-05	BUY	Market Buy	ブラックロック・フランス・エスエーエス BlackRock France SAS	passive	8.1K	¥5,460	+0.9%	¥44M ($285K)
2026-06-05	BUY	Market Buy	ブラックロック(ルクセンブルグ)エス・エーS.A.) BlackRock (Luxembourg	passive	124.3K	¥5,460	+0.9%	¥679M ($4.4M)
2026-06-05	BUY	Market Buy	ブラックロック・ジャパン株式会社	passive	188.3K	¥5,460	+0.9%	¥1.0B ($6.6M)
2026-06-04	SELL	Market Buy	ひびき・パース・アドバイザーズ2・エスピーシー Hibiki Path Advisors 2 SPC	activist	149.9K	¥5,500	-0.2%	¥364M ($2.3M)
2026-06-04	BUY	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	768.3K	¥5,500	+0.2%	¥4.2B ($27.3M)
2026-06-02	SELL	Market Buy	ひびき・パース・アドバイザーズ2・エスピーシー Hibiki Path Advisors 2 SPC	activist	216.2K	¥5,620	-0.4%	¥385M ($2.5M)
2026-06-02	BUY	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	768.3K	¥5,620	+0.4%	¥4.3B ($27.9M)
2026-05-26	SELL	Market Buy	ひびき・パース・アドバイザーズ2・エスピーシー Hibiki Path Advisors 2 SPC	activist	284.8K	¥5,580	-10.2%	¥352M ($2.3M)
2026-05-26	BUY	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	768.3K	¥5,580	+10.2%	¥4.3B ($27.7M)
2026-05-26	SELL	Market Buy	ひびき・パース・アドバイザーズ2・エスピーシー Hibiki Path Advisors 2 SPC	activist	284.8K	¥5,580	-10.2%	¥352M ($2.3M)
2026-05-26	BUY	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	768.3K	¥5,580	+10.2%	¥4.3B ($27.7M)
2026-05-19	BUY	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	768.3K	¥5,340	-7.5%	¥4.1B ($26.5M)
2026-05-19	SELL	Market Buy	ひびき・パース・アドバイザーズ2・エスピーシー Hibiki Path Advisors 2 SPC	activist	347.8K	¥5,340	+7.5%	¥356M ($2.3M)
2026-05-19	BUY	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	768.3K	¥5,340	-7.5%	¥4.1B ($26.5M)
2026-05-19	SELL	Market Buy	ひびき・パース・アドバイザーズ2・エスピーシー Hibiki Path Advisors 2 SPC	activist	347.8K	¥5,340	+7.5%	¥356M ($2.3M)
2026-03-18	BUY	unknown	ひびき・パース・アドバイザーズ(Hibiki Path Advisors Pte. Ltd.) Hibiki Path Advisors Pte. Ltd.	unknown	0	¥5,040	-3.6%	¥2.3B ($14.9M)
2026-03-18	BUY	Market Buy	ひびき・パース・アドバイザーズ2・エスピーシー Hibiki Path Advisors 2 SPC	activist	414.3K	¥5,040	+3.6%	¥2.0B ($13.0M)
2026-03-18	BUY	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	768.3K	¥5,040	+3.6%	¥3.7B ($24.1M)
2026-03-18	SELL	unknown	ひびき・パース・アドバイザーズ Hibiki Path Advisors Pte. Ltd.	unknown	0	¥5,040	+3.6%	¥2.3B ($14.9M)
2026-02-27	SELL	Market Buy	ひびき・パース・アドバイザーズ Hibiki Path Advisors Pte. Ltd.	activist	459.5K	¥5,330	+8.8%	¥343M ($2.2M)
2026-02-06	BUY	Market Buy	ひびき・パース・アドバイザーズ・エスピーシー Hibiki Path Advisors SPC	activist	768.3K	¥5,020	-3.2%	¥3.9B ($24.9M)
2026-02-06	SELL	Market Buy	ひびき・パース・アドバイザーズ Hibiki Path Advisors Pte. Ltd.	activist	523.9K	¥5,020	+3.2%	¥3.6B ($23.0M)
2025-11-20	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	300	¥3,065	-58.6%	¥400M ($2.6M)
2025-11-20	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	195.5K	¥3,065	+58.6%	¥2M ($12K)
2025-11-20	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	42.7K	¥3,065	+58.6%	¥100M ($648K)
2025-11-07	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	195.0K	¥3,140	-54.8%	¥2M ($12K)
2025-11-07	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	9.7K	¥3,140	+54.8%	¥23M ($147K)
2025-11-07	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	130.7K	¥3,140	-54.8%	¥11M ($74K)
2025-10-07	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	195.5K	¥3,080	+57.8%	¥15M ($96K)
2025-10-07	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	2.3K	¥3,080	+57.8%	¥316M ($2.0M)
2025-10-07	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	134.0K	¥3,080	+57.8%	¥413M ($2.7M)
2025-09-19	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	190.6K	¥3,330	+46.0%	¥635M ($4.1M)
2025-09-19	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	140.3K	¥3,330	+46.0%	¥2M ($13K)
2025-09-04	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	190.6K	¥3,100	-56.8%	¥2M ($12K)
2025-09-04	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	139.5K	¥3,100	+56.8%	¥79M ($510K)
2025-08-20	SELL	unknown	バーガンディ・アセット・マネジメント・リミテッド(Burgundy Asset Management Ltd.) Burgundy Asset Management Ltd.	other	246.6K	¥3,140	-54.8%	¥417M ($2.7M)
2025-07-30	BUY	Market Buy	ひびき・パース・アドバイザーズ(Hibiki Path Advisors Pte. Ltd.) Hibiki Path Advisors Pte. Ltd.	activist	1.2M	¥3,140	+54.8%	¥211M ($1.4M)

Showing the 50 most recent of 84 filings.

Frequently asked questions

Who has been buying Japan Pure Chemical Co., Ltd. stock?: 10 distinct investors have filed 27 disclosed large-shareholding filings in Japan Pure Chemical Co., Ltd. (4973), most recently on 2026-03-18. 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 Japan Pure Chemical Co., Ltd. have?: Japan Pure Chemical Co., Ltd. has 27 buy-side and 17 sell-side disclosures on record, covering ¥5.8B ($37.6M) in total reported value, spanning 2021-03-18 to 2026-03-18.
Where does StockDrifts get Japan Pure Chemical 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 Japan Pure Chemical Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.