Who has been buying Fuso Chemical Co.,Ltd. stock?

12 distinct investors have filed 13 disclosed large-shareholding filings in Fuso Chemical Co.,Ltd. (4368), most recently on 2026-03-23. 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 Fuso Chemical Co.,Ltd. have?

Fuso Chemical Co.,Ltd. has 13 buy-side and 5 sell-side disclosures on record, covering ¥23.3B ($150.2M) in total reported value, spanning 2021-05-26 to 2026-03-23.

Where does StockDrifts get Fuso 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.

Fuso Chemical Co.,Ltd. 4368

Company

扶桑化学工業株式会社Fuso Chemical Co.,Ltd.

Investors

Buys

Total Value

¥23.3B ($150.2M)

Avg Return

+135.50%

Last Filing

2026-03-23

Fuso Chemical Co.,Ltd. (4368) has 13 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥23.3B ($150.2M) in reported transaction value. The earliest filing StockDrifts holds for Fuso Chemical Co.,Ltd. is dated 2021-05-26; the most recent is 2026-03-23. 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 +135.50%, 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
2026-03-23	BUY	unknown	株式会社三井住友銀行	other	75.0K	¥2,770	-9.6%	¥228M ($1.5M)
2026-03-23	BUY	unknown	三井住友DSアセットマネジメント株式会社	passive	2.2M	¥2,770	+9.6%	¥6.6B ($42.8M)
2026-02-06	BUY	Market Buy	三井住友ＤＳアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	1.9M	¥2,580	+17.6%	¥4.9B ($31.6M)
2025-04-21	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.4M	¥1,091.67	-178.0%	¥8M ($50K)
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	157.2K	¥1,091.67	-178.0%	¥244M ($1.6M)
2025-04-21	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	71.8K	¥1,091.67	+178.0%	¥7.0B ($45.0M)
2025-02-19	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.4M	¥1,205	+151.9%	¥1.7B ($10.8M)
2025-02-19	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	380.2K	¥1,205	+151.9%	¥458M ($3.0M)
2025-02-19	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	6.3K	¥1,205	+151.9%	¥8M ($49K)
2025-02-14	BUY	Market Buy	藤岡篤 Atsushi Fujioka	strategic	23.7K	¥1,146.67	+164.7%	¥407M ($2.6M)
2025-02-14	BUY	Market Buy	株式会社薫風舎 Kumpusha Corporation	strategic	2.5M	¥1,146.67	+164.7%	¥497M ($3.2M)
2024-02-29	BUY	unknown	藤岡実佐子 Misako Fujioka	strategic	125.6K	¥1,613.33	+88.1%	¥40M ($259K)
2024-02-29	BUY	unknown	株式会社壽世堂 JYUSEIDOU.CO	strategic	5.6M	¥1,613.33	+88.1%	¥9.0B ($58.2M)
2024-02-29	BUY	unknown	株式会社壽世堂 JYUSEIDOU.CO	strategic	5.6M	¥1,613.33	+88.1%	¥9.0B ($58.2M)
2023-03-29	BUY	unknown	株式会社薫風舎 Kumpusha Corporation	strategic	2.1M	¥1,268.33	+139.3%	¥2.6B ($17.1M)
2023-03-29	BUY	unknown	藤岡篤 Atsushi Fujioka	strategic	22.1K	¥1,268.33	+139.3%	¥28M ($181K)
2023-02-13	BUY	unknown	藤岡篤 Atsushi Fujioka	strategic	22.1K	¥1,208.33	+151.2%	¥27M ($172K)
2023-02-13	BUY	unknown	赤澤多栄子 Taeko Akazawa	strategic	331.5K	¥1,208.33	+151.2%	¥401M ($2.6M)
2023-02-13	SELL	unknown	赤澤庄三 Shozo Akazawa	strategic	65	¥1,208.33	-151.2%	¥25M ($163K)
2023-02-13	BUY	unknown	株式会社薫風舎 Kumpusha Corporation	strategic	2.1M	¥1,208.33	+151.2%	¥2.5B ($16.3M)
2022-09-29	SELL	unknown	赤澤多栄子 Taeko Akazawa	strategic	331.5K	¥1,045	-190.4%	¥45M ($287K)
2022-09-29	BUY	unknown	赤澤庄三 Shozo Akazawa	strategic	2.1M	¥1,045	+190.4%	¥2.1B ($13.8M)
2022-09-29	BUY	unknown	赤澤庄三 Shozo Akazawa	strategic	2.1M	¥1,045	+190.4%	¥2.1B ($13.8M)
2021-05-26	SELL	Market Buy	大阪中小企業投資育成株式会社 Osaka Small and Medium Business Investment & Consultation Co.,Ltd	passive	1.5M	¥1,316.67	-130.5%	¥397M ($2.6M)

Frequently asked questions

Who has been buying Fuso Chemical Co.,Ltd. stock?: 12 distinct investors have filed 13 disclosed large-shareholding filings in Fuso Chemical Co.,Ltd. (4368), most recently on 2026-03-23. 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 Fuso Chemical Co.,Ltd. have?: Fuso Chemical Co.,Ltd. has 13 buy-side and 5 sell-side disclosures on record, covering ¥23.3B ($150.2M) in total reported value, spanning 2021-05-26 to 2026-03-23.
Where does StockDrifts get Fuso 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 Fuso Chemical Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.