Who has been buying Plus Alpha Consulting Co.,Ltd. stock?

17 distinct investors have filed 42 disclosed large-shareholding filings in Plus Alpha Consulting Co.,Ltd. (4071), most recently on 2026-05-13. 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 Plus Alpha Consulting Co.,Ltd. have?

Plus Alpha Consulting Co.,Ltd. has 42 buy-side and 38 sell-side disclosures on record, covering ¥140.4B ($905.8M) in total reported value, spanning 2021-07-01 to 2026-05-13.

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.

Plus Alpha Consulting Co.,Ltd. 4071

Company

株式会社プラスアルファ・コンサルティングPlus Alpha Consulting Co.,Ltd.

Investors

Buys

Total Value

¥140.4B ($905.8M)

Avg Return

-4.16%

Last Filing

2026-05-13

Plus Alpha Consulting Co.,Ltd. (4071) has 42 disclosed large-shareholding filings and 38 disclosed disposals on record, filed by 17 distinct investors. Together those filings cover ¥140.4B ($905.8M) in reported transaction value. The earliest filing StockDrifts holds for Plus Alpha Consulting Co.,Ltd. is dated 2021-07-01; the most recent is 2026-05-13. Across these filings the average return since disclosure is -4.16%, 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
2026-09-25	BUY	Market Buy	プラスエナジー合同会社	activist	2.3M	¥2,107	+0.0%	¥36M ($231K)
2026-09-25	SELL	unknown	鈴村賢治	activist	4.4M	¥2,107	+0.0%	¥116M ($749K)
2026-09-04	BUY	Market Buy	野村アセットマネジメント株式会社	other	889.2K	¥2,079	+1.4%	¥9M ($57K)
2026-09-04	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	170.6K	¥2,079	-1.4%	¥1.4B ($9.0M)
2026-09-04	SELL	unknown	野村證券株式会社	other	98.4K	¥2,079	-1.4%	¥2.0B ($13.0M)
2026-09-04	SELL	unknown	株式会社ラクス RAKUS Co.,Ltd	activist	9.4M	¥2,079	-1.4%	¥9M ($57K)
2026-09-04	SELL	negotiated	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	unknown	0	¥2,079	-1.4%	¥14.4B ($92.6M)
2026-08-20	BUY	Market Buy	野村證券株式会社	other	1.1M	¥2,267	-7.1%	¥827M ($5.3M)
2026-08-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	844.7K	¥2,267	+7.1%	¥2.3B ($14.9M)
2026-08-20	BUY	unknown	野村アセットマネジメント株式会社	other	887.3K	¥2,267	-	-
2026-08-06	BUY	Market Buy	野村證券株式会社	other	703.2K	¥2,220	-5.1%	¥1.3B ($8.4M)
2026-08-06	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.9M	¥2,220	-5.1%	¥1.6B ($10.3M)
2026-08-06	SELL	unknown	野村アセットマネジメント株式会社	other	886.4K	¥2,220	+5.1%	¥320M ($2.1M)
2026-07-22	BUY	negotiated	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	passive	6.9M	¥2,315	-	-
2026-07-14	BUY	unknown	株式会社ラクス RAKUS Co.,Ltd	activist	9.4M	¥2,911	-	¥27.4B ($176.7M)
2026-07-14	BUY	unknown	株式会社ラクス RAKUS Co.,Ltd	activist	9.4M	¥2,911	-	¥21.2B ($136.7M)
2026-06-24	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	6.9M	¥2,494	-15.5%	¥4.7B ($30.3M)
2026-06-17	BUY	unknown	株式会社ラクス RAKUS Co.,Ltd	strategic	2.1M	¥2,529	-16.7%	¥5.4B ($34.8M)
2026-06-16	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	5.0M	¥2,537	-16.9%	¥1.3B ($8.5M)
2026-05-13	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	4.5M	¥2,259	-6.7%	¥96M ($618K)
2026-05-11	BUY	unknown	野村證券株式会社	other	114.7K	¥2,339	-9.9%	¥268M ($1.7M)
2026-05-11	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.1M	¥2,339	-9.9%	¥2.7B ($17.2M)
2026-05-11	BUY	unknown	野村アセットマネジメント株式会社	other	1.0M	¥2,339	-9.9%	¥2.4B ($15.6M)
2026-05-08	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	4.5M	¥2,347	-10.2%	¥2.5B ($16.0M)
2026-05-01	BUY	unknown	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	3.4M	¥2,178	-3.3%	¥7.4B ($47.8M)
2026-03-19	BUY	unknown	野村證券株式会社	other	99.4K	¥2,167	-	¥215M ($1.4M)
2026-03-19	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	513.6K	¥2,167	+2.8%	¥955M ($6.2M)
2026-03-19	SELL	unknown	野村アセットマネジメント株式会社	other	1.2M	¥2,167	+2.8%	¥671M ($4.3M)
2026-02-19	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	952.3K	¥2,119	-0.6%	¥1.2B ($7.8M)
2026-02-19	SELL	Market Buy	野村アセットマネジメント株式会社	other	1.5M	¥2,119	+0.6%	¥728M ($4.7M)
2025-11-19	SELL	unknown	合同会社アルファスタイル Alpha Style LLC	activist	2.4M	¥2,226	+5.3%	¥19M ($123K)
2025-11-19	SELL	unknown	三室克哉 Katsuya Mimuro	activist	5.2M	¥2,226	+5.3%	¥3.1B ($19.8M)
2025-11-07	BUY	unknown	鈴村賢治 Kenji Suzumura	activist	4.5M	¥2,400	-	-
2025-11-07	BUY	unknown	プラスエナジー合同会社 Plus Energy LLC	activist	2.3M	¥2,400	-	-
2025-10-21	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	385.2K	¥2,399	-12.2%	¥924M ($6.0M)
2025-10-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.9M	¥2,399	-12.2%	¥4.6B ($29.5M)
2025-08-29	SELL	unknown	三室克哉 Katsuya Mimuro	activist	6.5M	¥2,456	+14.2%	¥73M ($474K)
2025-08-29	SELL	unknown	鈴村賢治 Kenji Suzumura	activist	4.5M	¥2,456	+14.2%	¥52M ($338K)
2025-08-29	SELL	unknown	プラスエナジー合同会社 Plus Energy LLC	activist	2.3M	¥2,456	+14.2%	¥21M ($135K)
2025-08-29	SELL	unknown	合同会社アルファスタイル Alpha Style LLC	activist	2.4M	¥2,456	+14.2%	¥21M ($135K)
2025-08-29	SELL	unknown	プラスエナジー合同会社 Plus Energy LLC	activist	2.3M	¥2,456	+14.2%	¥21M ($135K)
2025-08-29	SELL	unknown	鈴村賢治 Kenji Suzumura	activist	4.5M	¥2,456	+14.2%	¥52M ($338K)
2025-08-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.0M	¥2,320	-9.2%	¥4.7B ($30.3M)
2025-08-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.6K	¥2,320	+9.2%	¥29.6B ($190.9M)
2025-06-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	845.7K	¥2,190	+3.8%	¥2.0B ($13.0M)
2025-06-19	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	402.5K	¥2,190	-3.8%	¥65M ($421K)
2025-06-05	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	130.9K	¥2,104	-0.1%	¥778M ($5.0M)
2025-06-05	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.4M	¥2,104	+0.1%	¥215M ($1.4M)
2025-05-21	BUY	unknown	合同会社アルファスタイル Alpha Style LLC	activist	2.4M	¥1,805	-	¥4.3B ($27.6M)
2025-05-21	SELL	unknown	三室克哉 Katsuya Mimuro	activist	6.5M	¥1,805	-16.7%	¥4.6B ($29.4M)

Showing the 50 most recent of 121 filings.

Frequently asked questions

Who has been buying Plus Alpha Consulting Co.,Ltd. stock?: 17 distinct investors have filed 42 disclosed large-shareholding filings in Plus Alpha Consulting Co.,Ltd. (4071), most recently on 2026-05-13. 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 Plus Alpha Consulting Co.,Ltd. have?: Plus Alpha Consulting Co.,Ltd. has 42 buy-side and 38 sell-side disclosures on record, covering ¥140.4B ($905.8M) in total reported value, spanning 2021-07-01 to 2026-05-13.
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.