Who has been buying Happiness and D Co.,Ltd. stock?

7 distinct investors have filed 6 disclosed large-shareholding filings in Happiness and D Co.,Ltd. (3174), most recently on 2026-03-12. 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 Happiness and D Co.,Ltd. have?

Happiness and D Co.,Ltd. has 6 buy-side and 27 sell-side disclosures on record, covering ¥1.5B ($9.8M) in total reported value, spanning 2021-12-16 to 2026-03-12.

Where does StockDrifts get Happiness and D 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.

Happiness and D Co.,Ltd. 3174

Company

株式会社ハピネス・アンド・ディHappiness and D Co.,Ltd.

Investors

Buys

Total Value

¥1.5B ($9.8M)

Avg Return

-19.90%

Last Filing

2026-03-12

Happiness and D Co.,Ltd. (3174) has 6 disclosed large-shareholding filings and 27 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥1.5B ($9.8M) in reported transaction value. The earliest filing StockDrifts holds for Happiness and D Co.,Ltd. is dated 2021-12-16; the most recent is 2026-03-12. 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 -19.90%, 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
2026-08-06	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	414.4K	¥400	-0.3%	¥14M ($93K)
2026-07-31	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	454.4K	¥411	+2.4%	¥17M ($110K)
2026-07-24	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	500.0K	¥440	+8.9%	¥48M ($309K)
2026-07-16	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	620.0K	¥415	+3.4%	¥15M ($98K)
2026-07-14	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	660.0K	¥406	+1.5%	¥15M ($95K)
2026-07-06	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	700.0K	¥411	+1.0%	¥14M ($90K)
2026-07-06	BUY	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	700.0K	¥411	-1.0%	¥14M ($90K)
2026-06-30	BUY	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	740.0K	¥405	+12.8%	¥300M ($1.9M)
2026-06-15	BUY	unknown	施佳	activist	5.0K	¥452	-9.7%	¥2M ($15K)
2026-06-15	BUY	negotiated	田篤史	activist	610.1K	¥452	-9.7%	¥276M ($1.8M)
2026-03-12	SELL	unknown	有限会社DEN DEN Co.,Ltd.	activist	135.0K	¥538	-11.2%	¥22M ($143K)
2026-03-12	BUY	unknown	有限会社DEN DEN Co.,Ltd.	activist	135.0K	¥538	+11.2%	¥22M ($143K)
2026-03-12	SELL	negotiated	田啓子	activist	70.0K	¥538	-11.2%	¥42M ($270K)
2026-03-12	SELL	negotiated	田泰夫	activist	576.8K	¥538	-11.2%	¥345M ($2.2M)
2026-03-12	SELL	negotiated	田啓子	activist	70.0K	¥538	-11.2%	¥42M ($270K)
2026-03-12	SELL	negotiated	田泰夫	activist	576.8K	¥538	-11.2%	¥345M ($2.2M)
2026-02-26	SELL	negotiated	田篤史 Atsushi Den	activist	595.1K	¥581	-2.9%	¥80M ($514K)
2026-02-26	BUY	negotiated	施佳	activist	5.0K	¥581	+2.9%	¥3M ($19K)
2026-02-26	SELL	negotiated	田篤史	activist	610.1K	¥581	-2.9%	¥365M ($2.4M)
2026-02-24	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	49.0K	¥635	+5.8%	¥72M ($463K)
2026-02-18	SELL	subscription	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	162.0K	¥633	+5.5%	¥24M ($155K)
2026-02-06	SELL	Market Buy	ロング　コリドー　アセット　マネジメント　リミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	200.0K	¥636	+6.0%	¥16M ($102K)
2026-01-30	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	225.0K	¥602	+0.7%	¥28M ($182K)
2026-01-28	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	275.0K	¥610	+2.0%	¥31M ($203K)
2026-01-27	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	330.0K	¥613	+2.5%	¥26M ($167K)
2026-01-14	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	375.0K	¥632	+5.4%	¥21M ($134K)
2026-01-05	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	410.0K	¥668	+10.5%	¥22M ($140K)
2025-12-24	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	445.0K	¥688	+13.1%	¥3M ($21K)
2025-12-19	BUY	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	450.0K	¥639	-6.4%	¥288M ($1.9M)
2025-12-15	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	450.0K	¥629	+4.9%	¥32M ($207K)
2025-12-08	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	509.3K	¥587	-1.9%	¥20M ($132K)
2025-12-01	BUY	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	550.0K	¥695	-14.0%	¥30M ($193K)
2025-12-01	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	550.0K	¥695	+14.0%	¥30M ($193K)
2025-11-20	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	600.0K	¥633	+5.5%	¥31M ($200K)
2025-11-19	SELL	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	657.0K	¥624	+4.2%	¥16M ($104K)
2025-11-18	SELL	Market Buy	三田証券株式会社 MITA SECURITIES Co.,Ltd.	passive	0	¥594	-0.7%	¥290M ($1.9M)
2025-11-06	BUY	Market Buy	ロングコリドーアセットマネジメントリミテッド(Long Corridor Asset Management Limited) Long Corridor Asset Management Limited	passive	689.0K	¥622	-3.9%	¥429M ($2.8M)
2025-10-22	BUY	Market Buy	田篤史 Atsushi Den	activist	595.1K	¥695	-14.0%	¥4M ($24K)
2023-11-06	BUY	Market Buy	三田証券株式会社 MITA SECURITIES Co.,Ltd.	passive	600.0K	¥895	-33.2%	¥537M ($3.5M)
2023-05-16	SELL	negotiated	田啓子 Keiko Ta	activist	70.0K	¥927	+35.5%	¥239K ($2K)
2023-05-16	BUY	negotiated	田泰夫 Yasuo Den	activist	611.8K	¥927	-35.5%	¥549M ($3.5M)
2022-12-15	SELL	negotiated	田啓子 Keiko Ta	activist	70.0K	¥945	+36.7%	¥243K ($2K)
2022-12-15	SELL	negotiated	田泰夫 Yasuo Den	activist	717.3K	¥945	+36.7%	¥51M ($326K)
2022-01-13	BUY	Market Buy	田篤史 Atsushi Den	activist	585.1K	¥932	-35.8%	¥3M ($19K)
2021-12-16	SELL	negotiated	田啓子 Keiko Ta	activist	70.0K	¥903	+33.8%	¥462K ($3K)
2021-12-16	SELL	negotiated	田泰夫 Yasuo Den	activist	768.8K	¥903	+33.8%	¥42M ($269K)

Frequently asked questions

Who has been buying Happiness and D Co.,Ltd. stock?: 7 distinct investors have filed 6 disclosed large-shareholding filings in Happiness and D Co.,Ltd. (3174), most recently on 2026-03-12. 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 Happiness and D Co.,Ltd. have?: Happiness and D Co.,Ltd. has 6 buy-side and 27 sell-side disclosures on record, covering ¥1.5B ($9.8M) in total reported value, spanning 2021-12-16 to 2026-03-12.
Where does StockDrifts get Happiness and D 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 Happiness and D Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.