Who has been buying Toin Corporation stock?

6 distinct investors have filed 5 disclosed large-shareholding filings in Toin Corporation (7923), most recently on 2026-03-06. 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 Toin Corporation have?

Toin Corporation has 5 buy-side and 8 sell-side disclosures on record, covering ¥510M ($3.3M) in total reported value, spanning 2021-03-31 to 2026-03-06.

Where does StockDrifts get Toin Corporation 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.

Toin Corporation 7923

Company

トーイン株式会社Toin Corporation

Investors

Buys

Total Value

¥510M ($3.3M)

Avg Return

+68.49%

Last Filing

2026-03-06

Toin Corporation (7923) has 5 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥510M ($3.3M) in reported transaction value. The earliest filing StockDrifts holds for Toin Corporation is dated 2021-03-31; the most recent is 2026-03-06. 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 +68.49%, 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
2026-03-06	BUY	acquisition	CSRI5号株式会社 CSRI 5 Co., Ltd.	activist	5.0M	¥1,179	-0.1%	¥467M ($3.0M)
2026-02-24	SELL	unknown	トーイン共栄会(トーイン取引先持株会)理事長神林秀康 TOINKYOUEIKAI (TOIN TORIHIKISAKIMOTIKABUKAI) RIJICHOU KANBAYASHI HIDEYASU	unknown	0	¥1,175	-0.3%	¥691M ($4.5M)
2026-02-24	BUY	acquisition	CSRI5号株式会社 CSRI 5 Co., Ltd.	activist	4.6M	¥1,175	+0.3%	¥5.4B ($35.2M)
2026-02-20	SELL	unknown	山科智	unknown	0	¥1,177	-0.1%	-
2026-02-20	SELL	unknown	山科千津子	unknown	0	¥1,177	-0.1%	-
2026-02-20	SELL	unknown	山科統	unknown	0	¥1,177	-0.1%	-
2026-01-05	BUY	unknown	山科智	other	24.0K	¥1,183	+0.4%	¥28M ($182K)
2026-01-05	BUY	unknown	山科千津子	other	127.0K	¥1,183	+0.4%	¥150M ($965K)
2026-01-05	BUY	unknown	山科統	other	1.1M	¥1,183	+0.4%	¥1.3B ($8.6M)
2025-12-26	BUY	unknown	トーイン共栄会(トーイン取引先持株会)理事長神林秀康 TOIN KYOUEIKAI(TOIN TORIHIKISAKIMOTIKABUKAI) RIJICHOU KANBAYASHI HIDEYASU	strategic	587.7K	¥1,183	-0.4%	¥37M ($239K)
2025-12-26	SELL	unknown	トーイン共栄会(トーイン取引先持株会)理事長神林秀康 TOIN KYOUEIKAI(TOIN TORIHIKISAKIMOTIKABUKAI) RIJICHOU KANBAYASHI HIDEYASU	strategic	587.7K	¥1,183	+0.4%	¥37M ($239K)
2024-08-30	BUY	Market Buy	トーイン共栄会(トーイン取引先持株会)理事長神林秀康 KANBAYASHI HIDEYASU	strategic	619.1K	¥662	+78.0%	¥43M ($278K)
2023-03-06	BUY	Market Buy	トーイン共栄会(トーイン取引先持株会)理事長神林秀康 HIDEYASU KANBAYASI	strategic	554.0K	¥500	+135.6%	¥34M ($218K)
2021-09-08	BUY	unknown	トーイン共栄会理事長神林秀康 KANBAYASHI HIDEYASU	strategic	486.8K	¥515	+128.7%	¥251M ($1.6M)
2021-09-07	BUY	unknown	トーイン共栄会理事長神林秀康 KANBAYASHI HIDEYASU	strategic	486.8K	¥515	+128.7%	¥251M ($1.6M)
2021-09-07	SELL	unknown	トーイン共栄会理事長山岡新太郎 YAMAOKA SHINTAROU	other	0	¥515	-128.7%	¥243M ($1.6M)
2021-05-31	SELL	unknown	トーイン共栄会理事長山岡新太郎 YAMAOKA SHINTAROU	strategic	471.4K	¥504	-133.7%	¥40M ($259K)
2021-03-31	SELL	unknown	トーイン共栄会理事長山岡新太郎 YAMAOKA SHINTAROU	strategic	551.3K	¥523	-125.2%	¥222M ($1.4M)

Frequently asked questions

Who has been buying Toin Corporation stock?: 6 distinct investors have filed 5 disclosed large-shareholding filings in Toin Corporation (7923), most recently on 2026-03-06. 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 Toin Corporation have?: Toin Corporation has 5 buy-side and 8 sell-side disclosures on record, covering ¥510M ($3.3M) in total reported value, spanning 2021-03-31 to 2026-03-06.
Where does StockDrifts get Toin Corporation 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 Toin Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.