Who has been buying GSI Creos Corporation stock?

8 distinct investors have filed 17 disclosed large-shareholding filings in GSI Creos Corporation (8101), most recently on 2025-06-06. 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 GSI Creos Corporation have?

GSI Creos Corporation has 17 buy-side and 18 sell-side disclosures on record, covering ¥557M ($3.6M) in total reported value, spanning 2021-09-02 to 2025-06-06.

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.

GSI Creos Corporation 8101

Company

株式会社GSIクレオスGSI Creos Corporation

Investors

Buys

Total Value

¥557M ($3.6M)

Avg Return

+26.03%

Last Filing

2025-06-06

GSI Creos Corporation (8101) has 17 disclosed large-shareholding filings and 18 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥557M ($3.6M) in reported transaction value. The earliest filing StockDrifts holds for GSI Creos Corporation is dated 2021-09-02; the most recent is 2025-06-06. Across these filings the average return since disclosure is +26.03%, 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	SELL	unknown	アセットマネジメントOne株式会社	other	138.7K	¥2,618	+0.0%	¥334M ($2.2M)
2026-09-25	BUY	Market Buy	株式会社みずほ銀行	strategic	379.4K	¥2,618	+0.0%	¥23M ($149K)
2025-06-06	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	182.0K	¥2,057	-27.3%	¥262M ($1.7M)
2025-06-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	351.6K	¥2,057	-	-
2025-04-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-2.0K	¥1,691	+47.8%	-
2025-04-07	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	309.2K	¥1,691	-54.8%	¥267M ($1.7M)
2025-04-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	351.1K	¥1,691	+54.8%	¥21M ($138K)
2025-03-17	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	126.4K	¥2,109	-24.1%	¥266M ($1.7M)
2025-03-17	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	218.2K	¥2,109	-24.1%	¥43M ($275K)
2025-03-17	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	71.5K	¥2,109	+24.1%	¥3M ($17K)
2025-03-17	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	3.8K	¥2,109	+24.1%	¥567M ($3.7M)
2025-02-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-2.0K	¥2,202	+13.5%	-
2025-02-07	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	467.6K	¥2,202	+18.9%	¥1.0B ($6.6M)
2025-02-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	338.7K	¥2,202	+18.9%	¥746M ($4.8M)
2025-01-27	SELL	unknown	グンゼ株式会社 GUNZE LIMITED	other	378.9K	¥2,183	-19.9%	¥1.3B ($8.1M)
2024-09-02	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	252.9K	¥2,026	+29.2%	¥512M ($3.3M)
2024-09-02	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	110.3K	¥2,026	+29.2%	¥223M ($1.4M)
2024-09-02	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	238.8K	¥2,026	+29.2%	¥484M ($3.1M)
2024-09-02	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	70.8K	¥2,026	+29.2%	¥143M ($925K)
2024-02-19	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	252.9K	¥2,417	-8.3%	¥305M ($2.0M)
2024-02-19	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	231.5K	¥2,417	+8.3%	¥58M ($374K)
2024-02-19	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	70.3K	¥2,417	-8.3%	¥9M ($59K)
2023-10-16	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	379.4K	¥2,028	-	-
2023-10-16	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	207.7K	¥2,028	-29.1%	¥5M ($33K)
2023-10-16	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	75.1K	¥2,028	+29.1%	¥67M ($430K)
2023-10-16	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	7.8K	¥2,028	-29.1%	¥382M ($2.5M)
2023-09-19	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	379.4K	¥2,338	-	-
2023-09-19	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	210.2K	¥2,338	-12.0%	¥6M ($38K)
2023-09-19	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	42.2K	¥2,338	+12.0%	¥3M ($19K)
2023-09-19	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	195.8K	¥2,338	+12.0%	¥139M ($895K)
2023-06-19	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	379.4K	¥1,958	-	-
2023-06-19	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	212.7K	¥1,958	+33.7%	¥35M ($223K)
2023-06-19	SELL	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	39.8K	¥1,958	-33.7%	¥40M ($255K)
2023-06-19	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	136.4K	¥1,958	-	¥267M ($1.7M)
2022-10-17	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	194.7K	¥1,408	-85.9%	¥119M ($769K)
2022-10-17	BUY	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	60.6K	¥1,408	+85.9%	¥16M ($103K)
2022-10-17	SELL	Market Buy	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	7.4K	¥1,408	-85.9%	¥96M ($620K)
2022-10-17	BUY	Market Buy	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	379.4K	¥1,408	+85.9%	¥12M ($80K)
2022-01-18	SELL	unknown	グンゼ株式会社 GUNZE LIMITED	other	953.5K	¥1,215	-115.5%	¥345M ($2.2M)
2021-09-22	SELL	unknown	グンゼ株式会社 GUNZE LIMITED	other	1.3M	¥1,042	-151.3%	¥136M ($878K)
2021-09-15	SELL	unknown	グンゼ株式会社 GUNZE LIMITED	other	1.4M	¥1,070	-144.7%	¥140M ($902K)
2021-09-08	SELL	unknown	グンゼ株式会社 GUNZE LIMITED	other	1.5M	¥1,051	-149.1%	¥140M ($903K)
2021-09-02	SELL	unknown	グンゼ株式会社 GUNZE LIMITED	other	1.7M	¥1,010	-159.2%	¥150M ($969K)

Frequently asked questions

Who has been buying GSI Creos Corporation stock?: 8 distinct investors have filed 17 disclosed large-shareholding filings in GSI Creos Corporation (8101), most recently on 2025-06-06. 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 GSI Creos Corporation have?: GSI Creos Corporation has 17 buy-side and 18 sell-side disclosures on record, covering ¥557M ($3.6M) in total reported value, spanning 2021-09-02 to 2025-06-06.
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.