Who has been buying TWOSTONE&Sons Inc. stock?

9 distinct investors have filed 14 disclosed large-shareholding filings in TWOSTONE&Sons Inc. (7352), most recently on 2026-05-01. 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 TWOSTONE&Sons Inc. have?

TWOSTONE&Sons Inc. has 14 buy-side and 37 sell-side disclosures on record, covering ¥107.9B ($696.4M) in total reported value, spanning 2021-05-10 to 2026-05-01.

Where does StockDrifts get TWOSTONE&Sons Inc. 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.

TWOSTONE&Sons Inc. 7352

Company

株式会社TWOSTONE&SonsTWOSTONE&Sons Inc.

Investors

Buys

Total Value

¥107.9B ($696.4M)

Avg Return

+17.56%

Last Filing

2026-05-01

TWOSTONE&Sons Inc. (7352) has 14 disclosed large-shareholding filings and 37 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥107.9B ($696.4M) in reported transaction value. The earliest filing StockDrifts holds for TWOSTONE&Sons Inc. is dated 2021-05-10; the most recent is 2026-05-01. 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 +17.56%, 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
2026-07-15	BUY	Market Buy	倉田将志 KURATAMASASHI	passive	2.7M	¥453	-20.5%	¥223M ($1.4M)
2026-07-15	BUY	Market Buy	倉田将志 KURATAMASASHI	passive	2.7M	¥453	-20.5%	¥223M ($1.4M)
2026-07-06	BUY	unknown	河端保志	activist	15.6M	¥387	-10.3%	¥6.0B ($38.9M)
2026-07-06	SELL	unknown	アモーヴァ・アセットマネジメント株式会社	unknown	0	¥387	+10.3%	¥43M ($278K)
2026-07-06	BUY	Market Buy	三井住友信託銀行株式会社	other	4.4M	¥387	-10.3%	¥391M ($2.5M)
2026-07-06	BUY	unknown	YAS合同会社	activist	310.4K	¥387	-10.3%	¥120M ($775K)
2026-06-18	BUY	unknown	TK合同会社	activist	294.4K	¥318	+8.2%	¥94M ($604K)
2026-06-18	BUY	unknown	髙原克弥	activist	15.5M	¥318	+8.2%	¥4.9B ($31.9M)
2026-05-01	SELL	unknown	YAS合同会社	activist	310.4K	¥419	+15.8%	¥2M ($12K)
2026-05-01	SELL	unknown	河端保志	activist	15.6M	¥419	+15.8%	¥244M ($1.6M)
2026-05-01	SELL	unknown	YAS合同会社	activist	310.4K	¥419	+15.8%	¥2M ($12K)
2026-05-01	SELL	unknown	河端保志	activist	15.6M	¥419	+15.8%	¥17M ($108K)
2026-03-31	SELL	unknown	TK合同会社	activist	294.4K	¥531	+19.4%	¥5M ($30K)
2026-03-31	SELL	unknown	髙原克弥	activist	15.5M	¥531	+19.4%	¥285M ($1.8M)
2025-12-16	BUY	unknown	YAS合同会社	activist	310.4K	¥725	+21.9%	¥176M ($1.1M)
2025-12-16	SELL	unknown	河端保志	activist	16.0M	¥725	+21.9%	¥9.0B ($58.4M)
2025-12-16	BUY	unknown	YAS合同会社	activist	310.4K	¥725	+21.9%	¥176M ($1.1M)
2025-12-16	SELL	unknown	河端保志	activist	16.0M	¥725	+21.9%	¥9.0B ($58.4M)
2025-12-16	BUY	unknown	TK合同会社	activist	294.4K	¥725	+21.9%	¥167M ($1.1M)
2025-12-16	SELL	unknown	髙原克弥	activist	15.9M	¥725	+21.9%	¥9.0B ($58.2M)
2025-10-21	BUY	Market Buy	倉田将志 KURATAMASASHI	passive	2.2M	¥772	-26.7%	¥1.7B ($11.0M)
2025-10-21	BUY	Market Buy	倉田将志 KURATAMASASHI	passive	2.3M	¥772	-26.7%	¥1.8B ($11.6M)
2025-10-21	BUY	Market Buy	倉田将志 KURATAMASASHI	passive	2.2M	¥772	-26.7%	¥1.7B ($11.0M)
2025-06-27	BUY	unknown	河端保志 YASUYUKI KAWABATA	activist	16.0M	¥1,032	-45.2%	¥16.5B ($106.4M)
2025-06-27	BUY	unknown	YAS合同会社 YAS LLC	activist	310.4K	¥1,032	-45.2%	¥320M ($2.1M)
2025-05-29	BUY	unknown	TK合同会社 TK LLC	activist	294.4K	¥1,010	-44.0%	¥297M ($1.9M)
2025-05-29	SELL	unknown	YAS合同会社 YAS LLC	activist	310.4K	¥1,010	+44.0%	¥4M ($28K)
2025-05-29	SELL	unknown	河端保志 YASUYUKI KAWABATA	activist	16.0M	¥1,010	+44.0%	¥26M ($170K)
2025-05-29	SELL	unknown	髙原克弥 KATSUYA TAKAHARA	activist	15.9M	¥1,010	+44.0%	¥4M ($28K)
2025-01-28	BUY	unknown	TK合同会社 TK LLC	activist	294.4K	¥1,063	-46.8%	¥313M ($2.0M)
2025-01-28	SELL	unknown	髙原克弥 KATSUYA TAKAHARA	activist	15.9M	¥1,063	+46.8%	¥28M ($179K)
2025-01-10	SELL	unknown	髙原克弥 KATSUYA TAKAHARA	activist	15.9M	¥976	+42.0%	¥42M ($273K)
2025-01-10	BUY	unknown	TK合同会社 TK LLC	activist	294.4K	¥976	-42.0%	¥287M ($1.9M)
2024-07-09	SELL	unknown	YAS合同会社 YAS LLC	activist	310.4K	¥1,331	+57.5%	¥12M ($74K)
2024-07-09	SELL	unknown	YAS合同会社 YAS LLC	activist	310.4K	¥1,331	+57.5%	¥12M ($74K)
2024-07-09	BUY	unknown	河端保志 YASUYUKI KAWABATA	activist	16.0M	¥1,331	-57.5%	¥20.0B ($129.3M)
2024-07-09	BUY	unknown	河端保志 YASUYUKI KAWABATA	activist	16.0M	¥1,331	-57.5%	¥20.0B ($129.3M)
2024-05-10	SELL	unknown	TK合同会社 TK LLC	activist	294.4K	¥1,610	+64.8%	¥14M ($90K)
2024-05-10	BUY	unknown	髙原克弥 KATSUYA TAKAHARA	activist	15.9M	¥1,610	-64.8%	¥24.2B ($156.1M)
2024-04-30	BUY	unknown	髙原克弥 KATSUYA TAKAHARA	activist	15.9M	¥1,565	-63.8%	¥23.5B ($151.6M)
2024-04-30	BUY	unknown	TK合同会社 TK LLC	activist	294.4K	¥1,565	-63.8%	¥461M ($3.0M)
2024-02-06	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	other	1.6M	¥1,342.5	+57.8%	¥14M ($91K)
2024-02-06	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	53.0K	¥1,342.5	+57.8%	¥273M ($1.8M)
2024-01-16	BUY	unknown	髙原克弥 KATSUYA TAKAHARA	activist	8.2M	¥1,135.5	-50.1%	¥8.8B ($56.5M)
2024-01-16	SELL	unknown	TK合同会社 TK LLC	activist	147.2K	¥1,135.5	+50.1%	¥2M ($15K)
2024-01-15	SELL	unknown	TK合同会社 TK LLC	activist	147.2K	¥1,093.5	+48.2%	¥2M ($15K)
2024-01-15	BUY	unknown	髙原克弥 KATSUYA TAKAHARA	activist	8.2M	¥1,093.5	-48.2%	¥8.4B ($54.4M)
2023-09-01	SELL	unknown	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	113.0K	¥727.5	+22.2%	¥41M ($266K)
2023-09-01	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	779.2K	¥727.5	-22.2%	¥560M ($3.6M)
2023-05-24	BUY	unknown	YAS合同会社 YAS LLC	activist	155.2K	¥582	-2.8%	¥90M ($583K)

Showing the 50 most recent of 81 filings.

Frequently asked questions

Who has been buying TWOSTONE&Sons Inc. stock?: 9 distinct investors have filed 14 disclosed large-shareholding filings in TWOSTONE&Sons Inc. (7352), most recently on 2026-05-01. 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 TWOSTONE&Sons Inc. have?: TWOSTONE&Sons Inc. has 14 buy-side and 37 sell-side disclosures on record, covering ¥107.9B ($696.4M) in total reported value, spanning 2021-05-10 to 2026-05-01.
Where does StockDrifts get TWOSTONE&Sons Inc. 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 TWOSTONE&Sons Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.