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

10 distinct investors have filed 23 disclosed large-shareholding filings in Toyobo Co., Ltd. (3101), most recently on 2025-11-20. 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 Toyobo Co., Ltd. have?

Toyobo Co., Ltd. has 23 buy-side and 17 sell-side disclosures on record, covering ¥26.1B ($168.4M) in total reported value, spanning 2021-04-06 to 2025-11-20.

Where does StockDrifts get Toyobo 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.

Toyobo Co., Ltd. 3101

Company

東洋紡株式会社Toyobo Co., Ltd.

Investors

Buys

Total Value

¥26.1B ($168.4M)

Avg Return

+30.35%

Last Filing

2025-11-20

Toyobo Co., Ltd. (3101) has 23 disclosed large-shareholding filings and 17 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥26.1B ($168.4M) in reported transaction value. The earliest filing StockDrifts holds for Toyobo Co., Ltd. is dated 2021-04-06; the most recent is 2025-11-20. 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 +30.35%, 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
2025-11-20	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	1.4M	¥1,165	-28.4%	¥1.6B ($10.0M)
2025-11-20	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	2.7M	¥1,165	-28.4%	¥176M ($1.1M)
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	2.7M	¥1,119	-33.7%	¥100M ($643K)
2025-09-19	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	2.9M	¥1,119	+33.7%	¥30M ($193K)
2024-04-04	SELL	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	2.8M	¥1,106	-35.3%	¥1.7B ($11.1M)
2024-04-04	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	2.9M	¥1,106	+35.3%	¥10M ($64K)
2024-02-21	BUY	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	4.4M	¥1,093	+36.9%	¥993M ($6.4M)
2024-02-21	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	2.9M	¥1,093	+36.9%	¥127M ($816K)
2023-10-20	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	3.3M	¥1,011.5	+47.9%	¥3.3B ($21.5M)
2023-10-20	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	584.9K	¥1,011.5	+47.9%	¥288M ($1.9M)
2023-10-20	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	118.0K	¥1,011.5	+47.9%	¥119M ($770K)
2023-06-07	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	306.6K	¥993.3	+50.6%	¥305M ($2.0M)
2023-06-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	4.3M	¥993.3	+50.6%	¥4.2B ($27.4M)
2023-04-06	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	3.5M	¥1,009	-48.3%	¥494M ($3.2M)
2023-04-06	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	2.7M	¥1,009	-48.3%	¥791M ($5.1M)
2023-03-20	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	3.7M	¥1,014	-47.5%	¥415M ($2.7M)
2023-03-20	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	146.2K	¥1,014	+47.5%	¥181M ($1.2M)
2023-03-20	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	605.4K	¥1,014	-47.5%	¥172M ($1.1M)
2023-01-19	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	4.0M	¥992	+50.8%	¥177M ($1.1M)
2023-01-19	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	3.5M	¥992	-50.8%	¥203M ($1.3M)
2022-10-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	4.1M	¥1,065	-40.5%	¥1.5B ($9.4M)
2022-09-22	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	3.8M	¥1,064	+40.6%	¥19M ($122K)
2022-09-22	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	3.7M	¥1,064	+40.6%	¥815M ($5.3M)
2022-09-22	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	unknown	0	¥1,064	-40.6%	¥237M ($1.5M)
2022-05-11	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	3.4K	¥1,078	-38.8%	¥278M ($1.8M)
2022-05-11	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	5.4M	¥1,078	+38.8%	¥5.8B ($37.4M)
2022-05-11	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	13.4K	¥1,078	+38.8%	¥1.7B ($10.9M)
2022-03-07	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	256.5K	¥1,123	+33.2%	¥288M ($1.9M)
2022-03-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	6.1M	¥1,123	+33.2%	¥870M ($5.6M)
2022-03-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	212.8K	¥1,123	+33.2%	¥239M ($1.5M)
2022-03-07	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	unknown	0	¥1,123	-33.2%	¥190M ($1.2M)
2021-12-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	5.3M	¥1,276	+17.2%	¥6.7B ($43.2M)
2021-12-07	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	169.8K	¥1,276	-17.2%	¥727M ($4.7M)
2021-08-19	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	3.8M	¥1,382	+8.3%	¥295M ($1.9M)
2021-08-19	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	3.0M	¥1,382	+8.3%	¥123M ($794K)
2021-08-19	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	other	226.7K	¥1,382	-8.3%	¥874M ($5.6M)
2021-07-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	5.8M	¥1,307	+14.5%	¥2.0B ($12.9M)
2021-07-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	46.8K	¥1,307	+14.5%	¥5.6B ($36.4M)
2021-07-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	741.6K	¥1,307	+14.5%	¥969M ($6.3M)
2021-04-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	4.3M	¥1,470	+1.8%	¥6.3B ($40.5M)
2021-04-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	137.1K	¥1,470	+1.8%	¥202M ($1.3M)
2021-04-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	741.6K	¥1,470	+1.8%	¥1.1B ($7.0M)
2021-04-06	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	4.1M	¥1,230.688	-21.6%	¥33M ($212K)
2021-04-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-31.8K	¥1,230.688	-21.6%	¥1.2B ($7.7M)
2021-04-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	777.9K	¥1,230.688	+21.6%	¥957M ($6.2M)

Frequently asked questions

Who has been buying Toyobo Co., Ltd. stock?: 10 distinct investors have filed 23 disclosed large-shareholding filings in Toyobo Co., Ltd. (3101), most recently on 2025-11-20. 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 Toyobo Co., Ltd. have?: Toyobo Co., Ltd. has 23 buy-side and 17 sell-side disclosures on record, covering ¥26.1B ($168.4M) in total reported value, spanning 2021-04-06 to 2025-11-20.
Where does StockDrifts get Toyobo 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 Toyobo Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.