Who has been buying &Do Holdings Co.,Ltd. stock?

3 distinct investors have filed 2 disclosed large-shareholding filings in &Do Holdings Co.,Ltd. (3457), most recently on 2026-04-03. 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 &Do Holdings Co.,Ltd. have?

&Do Holdings Co.,Ltd. has 2 buy-side and 22 sell-side disclosures on record, covering ¥1.3B ($8.2M) in total reported value, spanning 2021-07-21 to 2026-04-03.

Where does StockDrifts get &Do Holdings 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.

&Do Holdings Co.,Ltd. 3457

Company

株式会社ハウスドゥ&Do Holdings Co.,Ltd.

Investors

Buys

Total Value

¥1.3B ($8.2M)

Avg Return

-6.01%

Last Filing

2026-04-03

&Do Holdings Co.,Ltd. (3457) has 2 disclosed large-shareholding filings and 22 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥1.3B ($8.2M) in reported transaction value. The earliest filing StockDrifts holds for &Do Holdings Co.,Ltd. is dated 2021-07-21; the most recent is 2026-04-03. 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 -6.01%, 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
2026-04-03	BUY	private	株式会社第一ライフグループ Daiichi Life Group, Inc.	strategic	3.1M	¥1,111	-4.5%	¥4M ($29K)
2026-04-03	SELL	private	株式会社第一ライフグループ Daiichi Life Group, Inc.	strategic	3.1M	¥1,111	+4.5%	¥4M ($29K)
2026-04-03	BUY	private	株式会社第一ライフグループ Daiichi Life Group, Inc.	strategic	3.1M	¥1,111	-4.5%	¥4M ($29K)
2025-06-09	BUY	Market Buy	第一生命ホールディングス株式会社 Dai-ichi Life Holdings, Inc.	strategic	3.1M	¥1,215	-7.8%	¥1.3B ($8.2M)
2025-03-05	BUY	unknown	安藤正弘 Masahiro Ando	activist	300.0K	¥1,219	-8.1%	¥366M ($2.4M)
2025-03-05	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,219	+8.1%	¥2M ($16K)
2025-03-05	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,219	+8.1%	¥2M ($16K)
2025-03-05	BUY	unknown	安藤正弘 Masahiro Ando	activist	300.0K	¥1,219	-8.1%	¥366M ($2.4M)
2025-01-24	BUY	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,195	-6.3%	¥8.3B ($53.6M)
2025-01-24	BUY	unknown	安藤正弘 Masahiro Ando	activist	300.0K	¥1,195	-6.3%	¥359M ($2.3M)
2025-01-17	BUY	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,174	-4.6%	¥8.2B ($52.6M)
2025-01-17	SELL	unknown	安藤正弘 Masahiro Ando	activist	300.0K	¥1,174	+4.6%	¥2.4B ($15.5M)
2024-12-24	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,169	+4.2%	¥5M ($30K)
2024-12-24	SELL	unknown	安藤正弘 Masahiro Ando	activist	2.4M	¥1,169	+4.2%	¥161M ($1.0M)
2024-12-24	BUY	unknown	第一生命ホールディングス株式会社 Dai-ichi Life Holdings, Inc.	strategic	2.1M	¥1,169	-4.2%	¥2.4B ($15.7M)
2023-11-13	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,009	-11.0%	¥2M ($13K)
2023-11-13	SELL	unknown	安藤正弘 Masahiro Ando	activist	2.5M	¥1,009	-11.0%	¥207M ($1.3M)
2023-08-31	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,035	-8.2%	¥119M ($770K)
2023-08-31	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,035	-8.2%	¥119M ($770K)
2023-08-31	BUY	unknown	安藤正弘 Masahiro Ando	activist	2.8M	¥1,035	+8.2%	¥2.9B ($18.8M)
2023-08-31	BUY	unknown	安藤正弘 Masahiro Ando	activist	2.7M	¥1,035	+8.2%	¥2.8B ($18.2M)
2023-05-11	BUY	unknown	安藤正弘 Masahiro Ando	activist	2.8M	¥1,035	+8.2%	¥2.9B ($18.8M)
2023-05-11	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,035	-8.2%	¥2M ($13K)
2023-05-11	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,035	-8.2%	¥2M ($13K)
2023-05-11	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥1,035	-8.2%	¥2M ($13K)
2023-05-11	BUY	unknown	安藤正弘 Masahiro Ando	activist	2.8M	¥1,035	+8.2%	¥2.9B ($18.8M)
2023-05-11	SELL	unknown	安藤正弘 Masahiro Ando	activist	2.7M	¥1,035	-8.2%	¥91M ($588K)
2022-01-13	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥857	-30.7%	¥2M ($11K)
2022-01-13	SELL	unknown	安藤正弘 Masahiro Ando	activist	2.8M	¥857	-30.7%	¥2M ($11K)
2021-08-13	BUY	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥989	+13.3%	¥6.9B ($44.3M)
2021-08-13	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥989	-13.3%	¥21M ($137K)
2021-08-13	SELL	unknown	安藤正弘 Masahiro Ando	activist	2.8M	¥989	-13.3%	¥8M ($50K)
2021-08-13	BUY	unknown	安藤正弘 Masahiro Ando	activist	2.8M	¥989	+13.3%	¥2.8B ($18.0M)
2021-07-21	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥992	-12.9%	¥21M ($138K)
2021-07-21	SELL	unknown	有限会社AMC AMC Ltd.	other	6.9M	¥992	-12.9%	¥21M ($138K)
2021-07-21	SELL	unknown	安藤正弘 Masahiro Ando	activist	2.8M	¥992	-12.9%	¥8M ($50K)
2021-07-21	SELL	unknown	安藤正弘 Masahiro Ando	activist	2.8M	¥992	-12.9%	¥8M ($50K)

Frequently asked questions

Who has been buying &Do Holdings Co.,Ltd. stock?: 3 distinct investors have filed 2 disclosed large-shareholding filings in &Do Holdings Co.,Ltd. (3457), most recently on 2026-04-03. 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 &Do Holdings Co.,Ltd. have?: &Do Holdings Co.,Ltd. has 2 buy-side and 22 sell-side disclosures on record, covering ¥1.3B ($8.2M) in total reported value, spanning 2021-07-21 to 2026-04-03.
Where does StockDrifts get &Do Holdings 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 &Do Holdings Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.