Who has been buying Nitto Boseki Co., Ltd. stock?

8 distinct investors have filed 28 disclosed large-shareholding filings in Nitto Boseki Co., Ltd. (3110), most recently on 2026-04-07. 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 Nitto Boseki Co., Ltd. have?

Nitto Boseki Co., Ltd. has 28 buy-side and 28 sell-side disclosures on record, covering ¥47.9B ($309.3M) in total reported value, spanning 2021-12-22 to 2026-04-07.

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.

Nitto Boseki Co., Ltd. 3110

Company

日東紡績株式会社Nitto Boseki Co., Ltd.

Investors

Buys

Total Value

¥47.9B ($309.3M)

Avg Return

+634.66%

Last Filing

2026-04-07

Nitto Boseki Co., Ltd. (3110) has 28 disclosed large-shareholding filings and 28 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥47.9B ($309.3M) in reported transaction value. The earliest filing StockDrifts holds for Nitto Boseki Co., Ltd. is dated 2021-12-22; the most recent is 2026-04-07. Across these filings the average return since disclosure is +634.66%, 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
2026-09-25	BUY	unknown	ゴールドマン・サックス・アンド・カンパニー・エルエルシー Goldman Sachs & Co. LLC	other	1.9M	¥2,980	+0.0%	¥5.7B ($36.5M)
2026-09-25	BUY	unknown	ゴールドマン・サックス・インターナショナル Goldman Sachs International	other	7.5M	¥2,980	+0.0%	¥22.5B ($145.1M)
2026-09-25	BUY	unknown	ゴールドマン・サックス証券株式会社	other	23.8K	¥2,980	+0.0%	¥71M ($458K)
2026-08-06	BUY	negotiated	三井住友信託銀行株式会社	strategic	2.6M	¥2,918	+2.1%	¥7.6B ($49.3M)
2026-08-06	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社	other	3.1M	¥2,918	+2.1%	¥9.1B ($59.0M)
2026-08-06	BUY	unknown	アモーヴァ・アセットマネジメント株式会社	other	3.8M	¥2,918	+2.1%	¥11.1B ($71.5M)
2026-06-22	BUY	unknown	株式会社みずほ銀行	strategic	800.0K	¥4,136	-	-
2026-06-22	SELL	unknown	みずほ証券株式会社	other	121.7K	¥4,136	+27.9%	¥78M ($503K)
2026-06-22	BUY	unknown	みずほ信託銀行株式会社	other	1.4M	¥4,136	-	-
2026-06-22	SELL	unknown	アセットマネジメントOne株式会社	other	859.2K	¥4,136	+27.9%	¥1.6B ($10.6M)
2026-04-07	BUY	unknown	株式会社みずほ銀行	strategic	800.0K	¥21,660	-	-
2026-04-07	BUY	unknown	みずほ証券株式会社	other	137.9K	¥21,660	-86.2%	¥327M ($2.1M)
2026-04-07	BUY	unknown	みずほ信託銀行株式会社	other	1.4M	¥21,660	-86.2%	¥25.8B ($166.6M)
2026-04-07	SELL	unknown	アセットマネジメントOne株式会社	other	1.3M	¥21,660	+86.2%	¥1.3B ($8.4M)
2026-03-23	BUY	unknown	株式会社みずほ銀行	strategic	800.0K	¥20,120	-	-
2026-03-23	BUY	unknown	みずほ証券株式会社	other	124.8K	¥20,120	-85.2%	¥1.1B ($7.3M)
2026-03-23	BUY	unknown	みずほ信託銀行株式会社	other	174.5K	¥20,120	-	-
2026-03-23	SELL	unknown	アセットマネジメントOne株式会社	other	1.3M	¥20,120	+85.2%	¥14.9B ($96.0M)
2025-12-04	BUY	negotiated	三井住友信託銀行株式会社	strategic	554.5K	¥11,620	-	-
2025-12-04	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社	other	571.3K	¥11,620	+74.3%	¥263M ($1.7M)
2025-12-04	SELL	negotiated	アモーヴァ・アセットマネジメント株式会社	other	567.7K	¥11,620	+74.3%	¥3.9B ($25.2M)
2025-11-21	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	800.0K	¥14,330	-	-
2025-11-21	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	2.1M	¥14,330	-79.2%	¥8.1B ($52.0M)
2025-11-21	SELL	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	66.0K	¥14,330	+79.2%	¥162M ($1.0M)
2025-11-21	BUY	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	174.5K	¥14,330	-	-
2025-10-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	800.0K	¥7,410	-	-
2025-10-07	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	78.3K	¥7,410	+59.8%	¥783M ($5.0M)
2025-10-07	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	174.5K	¥7,410	-	-
2025-10-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.5M	¥7,410	-59.8%	¥615M ($4.0M)
2025-09-22	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	800.0K	¥6,710	-	-
2025-09-22	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	184.2K	¥6,710	-55.6%	¥835M ($5.4M)
2025-09-22	BUY	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	174.5K	¥6,710	-	-
2025-09-22	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.4M	¥6,710	-55.6%	¥2.0B ($13.1M)
2025-09-19	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	591.2K	¥6,760	+55.9%	¥332M ($2.1M)
2025-09-19	SELL	negotiated	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	901.5K	¥6,760	+55.9%	¥383M ($2.5M)
2025-09-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	554.5K	¥6,760	-	-
2025-08-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	800.0K	¥5,430	-	-
2025-08-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	60.4K	¥5,430	+45.1%	¥123M ($793K)
2025-08-22	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	174.5K	¥5,430	-	-
2025-08-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.1M	¥5,430	+45.1%	¥2.1B ($13.3M)
2025-07-07	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	800.0K	¥5,990	-	-
2025-07-07	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	82.6K	¥5,990	-50.3%	¥136M ($875K)
2025-07-07	BUY	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	174.5K	¥5,990	-	-
2025-07-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.5M	¥5,990	-50.3%	¥2.1B ($13.8M)
2025-05-21	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	554.5K	¥4,220	+29.4%	¥255M ($1.6M)
2025-05-21	BUY	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	639.7K	¥4,220	-29.4%	¥207M ($1.3M)
2025-05-21	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	956.8K	¥4,220	+29.4%	¥1.6B ($10.5M)
2025-03-24	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	61.5K	¥4,625	-35.6%	¥70M ($450K)
2025-03-24	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	174.5K	¥4,625	-	-
2025-03-24	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.1M	¥4,625	+35.6%	¥2.0B ($12.8M)

Showing the 50 most recent of 104 filings.

Frequently asked questions

Who has been buying Nitto Boseki Co., Ltd. stock?: 8 distinct investors have filed 28 disclosed large-shareholding filings in Nitto Boseki Co., Ltd. (3110), most recently on 2026-04-07. 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 Nitto Boseki Co., Ltd. have?: Nitto Boseki Co., Ltd. has 28 buy-side and 28 sell-side disclosures on record, covering ¥47.9B ($309.3M) in total reported value, spanning 2021-12-22 to 2026-04-07.
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.