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

25 distinct investors have filed 105 disclosed large-shareholding filings in Kuraray Co., Ltd. (3405), most recently on 2026-02-05. 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 Kuraray Co., Ltd. have?

Kuraray Co., Ltd. has 105 buy-side and 93 sell-side disclosures on record, covering ¥229.1B ($1.5B) in total reported value, spanning 2021-06-04 to 2026-02-05.

Where does StockDrifts get Kuraray 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.

Kuraray Co., Ltd. 3405

Company

株式会社クラレKuraray Co., Ltd.

Investors

Buys

105

Total Value

¥229.1B ($1.5B)

Avg Return

+29.48%

Last Filing

2026-02-05

Kuraray Co., Ltd. (3405) has 105 disclosed large-shareholding filings and 93 disclosed disposals on record, filed by 25 distinct investors. Together those filings cover ¥229.1B ($1.5B) in reported transaction value. The earliest filing StockDrifts holds for Kuraray Co., Ltd. is dated 2021-06-04; the most recent is 2026-02-05. 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 +29.48%, 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
2026-07-21	BUY	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	1.9M	¥1,807.5	+4.1%	¥3.5B ($22.3M)
2026-07-21	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, N.A.	passive	2.8M	¥1,807.5	+4.1%	¥5.0B ($32.4M)
2026-07-21	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	392.4K	¥1,807.5	+4.1%	¥709M ($4.6M)
2026-07-21	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	3.7M	¥1,807.5	+4.1%	¥6.7B ($43.3M)
2026-07-21	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	734.1K	¥1,807.5	+4.1%	¥1.3B ($8.6M)
2026-07-21	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	342.8K	¥1,807.5	+4.1%	¥620M ($4.0M)
2026-07-21	BUY	Market Buy	ブラックロック・ジャパン株式会社	passive	5.3M	¥1,807.5	+4.1%	¥9.5B ($61.2M)
2026-07-06	BUY	Market Buy	野村アセットマネジメント株式会社	other	20.1M	¥1,730.5	+5.9%	¥5.0B ($32.0M)
2026-07-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	283.0K	¥1,730.5	-5.9%	¥2.0B ($12.8M)
2026-07-06	BUY	Market Buy	野村證券株式会社	other	1.2M	¥1,730.5	+5.9%	¥2.2B ($14.2M)
2026-02-05	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	16.8M	¥1,765	-5.3%	¥544M ($3.5M)
2026-01-08	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社	other	9.1M	¥1,602.5	+4.3%	¥15.3B ($98.6M)
2026-01-08	SELL	Market Buy	三井住友トラスト・アセットマネジメント株式会社	other	7.3M	¥1,602.5	-4.3%	¥12.2B ($78.7M)
2025-10-21	BUY	unknown	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	9.2M	¥1,678.5	-0.4%	¥15.4B ($99.5M)
2025-10-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	18.5M	¥1,678.5	-0.4%	¥1.5B ($9.5M)
2025-10-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.5M	¥1,678.5	+0.4%	¥3.0B ($19.3M)
2025-10-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	-72.2K	¥1,678.5	+0.4%	¥164M ($1.1M)
2025-10-21	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	8.0M	¥1,678.5	+0.4%	¥55M ($352K)
2025-10-06	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	17.6M	¥1,761	+5.0%	¥2.8B ($18.1M)
2025-10-06	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	3.3M	¥1,761	-5.0%	¥4.6B ($29.9M)
2025-10-06	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	9.2M	¥1,761	-5.0%	¥16.2B ($104.5M)
2025-10-06	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	8.1M	¥1,761	-5.0%	¥57M ($369K)
2025-10-06	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	19.5K	¥1,761	-5.0%	¥5.7B ($36.9M)
2025-09-19	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	693.9K	¥1,702	+1.8%	¥2.9B ($18.5M)
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	19.2M	¥1,702	-1.8%	¥3.9B ($25.3M)
2025-09-19	SELL	unknown	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	9.2M	¥1,702	+1.8%	¥2.7B ($17.1M)
2025-09-19	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	8.1M	¥1,702	+1.8%	¥332M ($2.1M)
2025-09-19	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	unknown	0	¥1,702	+1.8%	¥82.9B ($535.1M)
2025-09-19	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	3.8K	¥1,702	+1.8%	¥5.5B ($35.7M)
2025-07-22	BUY	negotiated	MUFGセキュリティーズ(カナダ) MUFG Securities(Canada	other	2.2M	¥1,843.5	-9.3%	¥4.0B ($25.8M)
2025-07-22	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	193.9K	¥1,843.5	+9.3%	¥8.2B ($52.9M)
2025-07-22	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	4.8M	¥1,843.5	-9.3%	¥8.9B ($57.4M)
2025-07-22	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.1M	¥1,843.5	+9.3%	¥240M ($1.5M)
2025-07-22	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	790.8K	¥1,843.5	-9.3%	¥1.5B ($9.4M)
2025-07-22	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	790.8K	¥1,843.5	-9.3%	¥1.5B ($9.4M)
2025-07-22	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	193.9K	¥1,843.5	+9.3%	¥8.2B ($52.9M)
2025-07-22	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	4.8M	¥1,843.5	-9.3%	¥8.9B ($57.4M)
2025-07-22	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.1M	¥1,843.5	+9.3%	¥240M ($1.5M)
2025-07-22	BUY	negotiated	MUFGセキュリティーズ(カナダ) MUFG Securities(Canada	other	2.2M	¥1,843.5	-9.3%	¥4.0B ($25.8M)
2025-07-07	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	4.7M	¥1,815	-7.9%	¥8.4B ($54.5M)
2025-07-07	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	4.8M	¥1,815	-7.9%	¥8.8B ($56.7M)
2025-07-07	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.2M	¥1,815	-7.9%	¥11.3B ($72.8M)
2025-07-07	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	790.8K	¥1,815	-7.9%	¥1.4B ($9.3M)
2025-04-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.4M	¥1,598	-4.6%	¥13.8B ($89.1M)
2025-04-21	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	10.7M	¥1,598	+4.6%	¥260M ($1.7M)
2025-04-21	SELL	negotiated	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	8.2M	¥1,598	-4.6%	¥208M ($1.3M)
2025-04-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	16.9M	¥1,598	+4.6%	¥10.5B ($67.7M)
2025-04-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	17.6K	¥1,598	-4.6%	¥5.2B ($33.5M)
2025-04-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	483.2K	¥1,598	+4.6%	¥772M ($5.0M)
2025-04-04	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	11.0M	¥1,652	+1.2%	¥7.1B ($46.1M)

Showing the 50 most recent of 200 filings.

Frequently asked questions

Who has been buying Kuraray Co., Ltd. stock?: 25 distinct investors have filed 105 disclosed large-shareholding filings in Kuraray Co., Ltd. (3405), most recently on 2026-02-05. 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 Kuraray Co., Ltd. have?: Kuraray Co., Ltd. has 105 buy-side and 93 sell-side disclosures on record, covering ¥229.1B ($1.5B) in total reported value, spanning 2021-06-04 to 2026-02-05.
Where does StockDrifts get Kuraray 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 Kuraray Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.