Who has been buying Topy Industries, Limited stock?

4 distinct investors have filed 1 disclosed large-shareholding filings in Topy Industries, Limited (7231), most recently on 2025-06-13. 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 Topy Industries, Limited have?

Topy Industries, Limited has 1 buy-side and 4 sell-side disclosures on record, covering ¥2.7B ($17.5M) in total reported value, spanning 2021-03-22 to 2025-06-13.

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.

Topy Industries, Limited 7231

Company

トピー工業株式会社Topy Industries, Limited

Investors

Buys

Total Value

¥2.7B ($17.5M)

Avg Return

+37.74%

Last Filing

2025-06-13

Topy Industries, Limited (7231) has 1 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥2.7B ($17.5M) in reported transaction value. The earliest filing StockDrifts holds for Topy Industries, Limited is dated 2021-03-22; the most recent is 2025-06-13. Across these filings the average return since disclosure is +37.74%, 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
2026-08-21	SELL	unknown	株式会社みずほ銀行	strategic	511.8K	¥3,095	-1.9%	¥850M ($5.5M)
2026-08-21	SELL	unknown	みずほ信託銀行株式会社	strategic	131.3K	¥3,095	-1.9%	¥216M ($1.4M)
2026-08-21	SELL	unknown	アセットマネジメントOne株式会社	other	236.4K	¥3,095	-1.9%	¥373M ($2.4M)
2025-06-13	BUY	unknown	トピーファンド理事長熊澤一郎 Ichiro Kumazawa	strategic	1.2M	¥2,207	+43.0%	¥2.7B ($17.5M)
2022-04-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	787.8K	¥1,010	-	-
2022-04-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	356.5K	¥1,010	-212.4%	¥7M ($47K)
2022-04-07	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	201.3K	¥1,010	-212.4%	¥289M ($1.9M)
2021-12-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	787.8K	¥1,116	-	-
2021-12-07	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	489.3K	¥1,116	-	-
2021-12-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	362.5K	¥1,116	-182.7%	¥16M ($104K)
2021-03-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	787.8K	¥1,266.828	-	-
2021-03-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	378.8K	¥1,266.828	-149.1%	¥311M ($2.0M)
2021-03-22	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	489.3K	¥1,266.828	-	-

Frequently asked questions

Who has been buying Topy Industries, Limited stock?: 4 distinct investors have filed 1 disclosed large-shareholding filings in Topy Industries, Limited (7231), most recently on 2025-06-13. 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 Topy Industries, Limited have?: Topy Industries, Limited has 1 buy-side and 4 sell-side disclosures on record, covering ¥2.7B ($17.5M) in total reported value, spanning 2021-03-22 to 2025-06-13.
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.