Who has been buying Information Planning Co. Ltd. stock?

7 distinct investors have filed 7 disclosed large-shareholding filings in Information Planning Co. Ltd. (3712), most recently on 2026-01-22. 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 Information Planning Co. Ltd. have?

Information Planning Co. Ltd. has 7 buy-side and 2 sell-side disclosures on record, covering ¥292M ($1.9M) in total reported value, spanning 2023-09-06 to 2026-01-22.

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.

Information Planning Co. Ltd. 3712

Company

株式会社情報企画Information Planning Co. Ltd.

Investors

Buys

Total Value

¥292M ($1.9M)

Avg Return

+13.06%

Last Filing

2026-01-22

Information Planning Co. Ltd. (3712) has 7 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥292M ($1.9M) in reported transaction value. The earliest filing StockDrifts holds for Information Planning Co. Ltd. is dated 2023-09-06; the most recent is 2026-01-22. Across these filings the average return since disclosure is +13.06%, 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
2026-09-15	BUY	Market Buy	さくら損害保険株式会社	passive	40.5K	¥996	-	-
2026-09-15	BUY	Market Buy	株式会社UH Partners 2	passive	372.8K	¥996	+0.7%	¥53M ($342K)
2026-09-15	BUY	Market Buy	光通信株式会社	passive	1.1M	¥996	-	-
2026-06-22	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	160.3K	¥860	+16.6%	¥2M ($11K)
2026-06-22	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	116.2K	¥860	+16.6%	¥38M ($247K)
2026-06-22	BUY	Market Buy	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	21.5K	¥860	+16.6%	¥703K ($5K)
2026-06-22	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	158.2K	¥860	+16.6%	¥14M ($89K)
2026-06-22	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	71.7K	¥860	+16.6%	¥23M ($148K)
2026-06-22	BUY	Market Buy	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	21.0K	¥860	+16.6%	¥2M ($14K)
2026-06-08	BUY	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	142.2K	¥935	+7.3%	¥133M ($858K)
2026-06-08	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	45.1K	¥935	+7.3%	¥42M ($272K)
2026-06-08	BUY	unknown	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	18.6K	¥935	+7.3%	¥17M ($112K)
2026-01-22	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	298.0K	¥1,278	-21.5%	¥61M ($391K)
2026-01-22	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	298.0K	¥1,278	-21.5%	¥61M ($391K)
2025-09-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	226.9K	¥1,272	-	-
2025-09-26	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	63.6K	¥1,272	-21.1%	¥16M ($101K)
2025-09-26	BUY	Market Buy	さくら損害保険株式会社 Sakura General Insurance Co., Ltd.	passive	8.1K	¥1,272	-	-
2025-05-07	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	226.9K	¥976	-	-
2025-05-07	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	51.7K	¥976	+2.8%	¥40M ($258K)
2025-05-07	BUY	Market Buy	さくら損害保険株式会社 Sakura General Insurance Co., Ltd.	passive	8.1K	¥976	-	-
2025-03-24	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	250.9K	¥1,074	-6.6%	¥48M ($312K)
2025-03-24	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	250.9K	¥1,074	-6.6%	¥48M ($312K)
2024-08-23	BUY	Market Buy	さくら損害保険株式会社 Sakura General Insurance Co., Ltd.	passive	8.1K	¥819	-	¥7M ($43K)
2024-08-23	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	10.6K	¥819	-	¥9M ($56K)
2024-08-23	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	226.9K	¥819	+22.5%	¥18M ($119K)
2024-04-05	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	205.9K	¥803	+24.9%	¥165M ($1.1M)
2024-04-05	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	205.9K	¥803	+24.9%	¥165M ($1.1M)
2024-01-30	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	204.7K	¥767	+30.8%	¥157M ($1.0M)
2023-09-29	BUY	unknown	松岡千晴 Chiharu Matsuoka	strategic	122.0K	¥581.8	-	-
2023-09-29	BUY	unknown	松岡仁史 Hitoshi Matsuoka	strategic	800.0K	¥581.8	-	-
2023-09-29	BUY	unknown	松岡仁史 Hitoshi Matsuoka	strategic	800.0K	¥581.8	-	-
2023-09-29	SELL	unknown	有限会社サポート Limited company support	strategic	400	¥581.8	-72.4%	¥165M ($1.1M)
2023-09-29	SELL	unknown	有限会社サポート Limited company support	strategic	400	¥581.8	-72.4%	¥165M ($1.1M)
2023-09-29	BUY	unknown	松岡千晴 Chiharu Matsuoka	strategic	122.0K	¥581.8	-	-
2023-09-06	BUY	unknown	松岡仁史 Hitoshi Matsuoka	strategic	800.0K	¥581.4	-	-
2023-09-06	BUY	unknown	有限会社サポート Limited company support	strategic	325.0K	¥581.4	-	-
2023-09-06	BUY	unknown	松岡千晴 Chiharu Matsuoka	strategic	122.0K	¥581.4	-	-

Frequently asked questions

Who has been buying Information Planning Co. Ltd. stock?: 7 distinct investors have filed 7 disclosed large-shareholding filings in Information Planning Co. Ltd. (3712), most recently on 2026-01-22. 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 Information Planning Co. Ltd. have?: Information Planning Co. Ltd. has 7 buy-side and 2 sell-side disclosures on record, covering ¥292M ($1.9M) in total reported value, spanning 2023-09-06 to 2026-01-22.
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.