Who has been buying PIOLAX, Inc. stock?

15 distinct investors have filed 46 disclosed large-shareholding filings in PIOLAX, Inc. (5988), most recently on 2026-04-22. 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 PIOLAX, Inc. have?

PIOLAX, Inc. has 46 buy-side and 37 sell-side disclosures on record, covering ¥64.8B ($418.1M) in total reported value, spanning 2021-10-22 to 2026-04-22.

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.

PIOLAX, Inc. 5988

Company

株式会社パイオラックスPIOLAX, Inc.

Investors

Buys

Total Value

¥64.8B ($418.1M)

Avg Return

-26.51%

Last Filing

2026-04-22

PIOLAX, Inc. (5988) has 46 disclosed large-shareholding filings and 37 disclosed disposals on record, filed by 15 distinct investors. Together those filings cover ¥64.8B ($418.1M) in reported transaction value. The earliest filing StockDrifts holds for PIOLAX, Inc. is dated 2021-10-22; the most recent is 2026-04-22. Across these filings the average return since disclosure is -26.51%, 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
2026-07-07	BUY	unknown	株式会社みずほ銀行	strategic	600.0K	¥1,650	-	-
2026-07-07	SELL	unknown	みずほ証券株式会社	other	671.5K	¥1,650	-2.4%	¥281M ($1.8M)
2026-07-07	BUY	unknown	アセットマネジメントOne株式会社	other	420.5K	¥1,650	-	-
2026-04-22	BUY	unknown	株式会社みずほ銀行	strategic	600.0K	¥1,618	-	-
2026-04-22	SELL	unknown	みずほ証券株式会社	other	842.8K	¥1,618	-4.5%	¥6M ($39K)
2026-04-22	BUY	unknown	アセットマネジメントOne株式会社	other	417.3K	¥1,618	-	-
2026-04-07	BUY	unknown	株式会社みずほ銀行	strategic	600.0K	¥1,652	-	-
2026-04-07	BUY	unknown	みずほ証券株式会社	other	846.2K	¥1,652	+2.3%	¥18M ($118K)
2026-04-07	SELL	unknown	アセットマネジメントOne株式会社	other	417.3K	¥1,652	-2.3%	¥31M ($197K)
2026-02-06	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.9M	¥1,788	+5.5%	¥27M ($171K)
2026-01-09	BUY	unknown	株式会社みずほ銀行	strategic	600.0K	¥1,765	-	-
2026-01-09	BUY	unknown	みずほ証券株式会社	other	844.4K	¥1,765	-	-
2026-01-09	SELL	unknown	アセットマネジメントOne株式会社	other	442.8K	¥1,765	+4.3%	¥13M ($84K)
2025-11-10	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	600.0K	¥1,710	-	-
2025-11-10	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	843.2K	¥1,710	-1.2%	¥19M ($123K)
2025-11-10	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	453.4K	¥1,710	+1.2%	¥101M ($654K)
2025-08-07	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	600.0K	¥1,795	-	-
2025-08-07	SELL	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	832.4K	¥1,795	+5.8%	¥7M ($43K)
2025-08-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	512.9K	¥1,795	-5.8%	¥73M ($472K)
2025-06-06	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	600.0K	¥1,848	-	-
2025-06-06	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	469.2K	¥1,848	+8.6%	¥260M ($1.7M)
2025-06-06	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	838.0K	¥1,848	+8.6%	¥68M ($442K)
2025-04-14	SELL	unknown	株式会社レノ Reno Inc. (Murakami-linked)	unknown	0	¥2,077	+18.6%	¥5.6B ($36.0M)
2025-04-14	SELL	unknown	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	unknown	0	¥2,077	+18.6%	¥3.8B ($24.4M)
2025-04-03	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-6.4K	¥2,163	+23.5%	¥1.0B ($6.8M)
2025-04-03	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	961.2K	¥2,163	-21.9%	¥2.0B ($13.2M)
2025-04-03	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	214.2K	¥2,163	-21.9%	¥44.1B ($284.4M)
2025-03-24	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	600.0K	¥2,474	-	-
2025-03-24	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	873.1K	¥2,474	-31.7%	¥92M ($591K)
2025-03-24	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	609.9K	¥2,474	-31.7%	¥18M ($118K)
2025-03-21	BUY	Market Buy	株式会社佐賀鉄工所 SAGA TEKKOHSHO CO.,LTD.	strategic	6.0M	¥2,484	-32.0%	¥1.2B ($7.5M)
2025-03-21	SELL	unknown	株式会社佐賀鉄工所 SAGA TEKKOHSHO CO.,LTD.	strategic	4.8M	¥2,484	+32.0%	¥3.0B ($19.2M)
2025-03-21	SELL	unknown	株式会社佐賀鉄工所 SAGA TEKKOHSHO CO.,LTD.	strategic	4.8M	¥2,484	+32.0%	¥3.0B ($19.2M)
2025-03-21	BUY	Market Buy	株式会社佐賀鉄工所 SAGA TEKKOHSHO CO.,LTD.	strategic	6.0M	¥2,484	-32.0%	¥1.2B ($7.5M)
2025-03-21	BUY	Market Buy	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	passive	1.8M	¥2,484	-	-
2025-03-21	BUY	Market Buy	株式会社レノ Reno Inc. (Murakami-linked)	passive	2.7M	¥2,484	-32.0%	¥37M ($238K)
2025-03-12	BUY	Market Buy	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	passive	1.8M	¥2,366	-	-
2025-03-12	BUY	Market Buy	株式会社レノ Reno Inc. (Murakami-linked)	passive	2.7M	¥2,366	-28.6%	¥938M ($6.1M)
2025-03-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	479.3K	¥2,412	-29.9%	¥1.2B ($7.5M)
2025-03-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.5M	¥2,412	-29.9%	¥3.6B ($23.4M)
2025-03-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	11.0K	¥2,412	-29.9%	¥26M ($171K)
2025-03-04	BUY	Market Buy	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	passive	1.8M	¥2,418	-	-
2025-03-04	BUY	Market Buy	株式会社レノ Reno Inc. (Murakami-linked)	passive	2.3M	¥2,418	-30.1%	¥1.2B ($8.0M)
2025-02-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	165.0K	¥2,349	-	-
2025-02-21	SELL	negotiated	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	677.4K	¥2,349	+28.1%	¥653M ($4.2M)
2025-02-21	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	801.3K	¥2,349	-28.1%	¥44M ($281K)
2025-02-19	BUY	Market Buy	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	passive	1.8M	¥2,366	-28.6%	¥272M ($1.8M)
2025-02-19	BUY	Market Buy	株式会社レノ Reno Inc. (Murakami-linked)	passive	1.8M	¥2,366	-	-
2025-01-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	600.0K	¥2,340	-	-
2025-01-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	838.3K	¥2,340	+27.8%	¥17M ($112K)

Showing the 50 most recent of 122 filings.

Frequently asked questions

Who has been buying PIOLAX, Inc. stock?: 15 distinct investors have filed 46 disclosed large-shareholding filings in PIOLAX, Inc. (5988), most recently on 2026-04-22. 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 PIOLAX, Inc. have?: PIOLAX, Inc. has 46 buy-side and 37 sell-side disclosures on record, covering ¥64.8B ($418.1M) in total reported value, spanning 2021-10-22 to 2026-04-22.
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.