Who has been buying RaQualia Pharma Inc. stock?

6 distinct investors have filed 4 disclosed large-shareholding filings in RaQualia Pharma Inc. (4579), most recently on 2026-01-29. 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 RaQualia Pharma Inc. have?

RaQualia Pharma Inc. has 4 buy-side and 8 sell-side disclosures on record, covering ¥4.6B ($29.8M) in total reported value, spanning 2021-03-22 to 2026-01-29.

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.

RaQualia Pharma Inc. 4579

Company

ラクオリア創薬株式会社RaQualia Pharma Inc.

Investors

Buys

Total Value

¥4.6B ($29.8M)

Avg Return

+20.13%

Last Filing

2026-01-29

RaQualia Pharma Inc. (4579) has 4 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥4.6B ($29.8M) in reported transaction value. The earliest filing StockDrifts holds for RaQualia Pharma Inc. is dated 2021-03-22; the most recent is 2026-01-29. Across these filings the average return since disclosure is +20.13%, 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
2026-01-29	BUY	subscription	エイチ・ケー・イノエン・コーポレーション HK Inoen Corporation	strategic	4.1M	¥1,018	-40.4%	¥1.4B ($9.1M)
2026-01-29	SELL	subscription	柿沼佑一 Yuichi Kakinuma	strategic	2.4M	¥1,018	+40.4%	¥154M ($991K)
2025-12-12	SELL	subscription	エイチ・ケー・イノエン・コーポレーション HK Inoen Corporation	strategic	2.6M	¥1,212	+49.9%	¥3M ($19K)
2025-12-12	SELL	subscription	柿沼佑一 Yuichi Kakinuma	strategic	2.4M	¥1,212	+49.9%	¥3M ($19K)
2025-04-18	SELL	subscription	柿沼佑一 Yuichi Kakinuma	strategic	2.4M	¥357	-70.0%	¥141M ($912K)
2025-04-18	BUY	subscription	エイチ・ケー・イノエン・コーポレーション HK Inoen Corporation	strategic	2.6M	¥357	+70.0%	¥925M ($6.0M)
2025-04-18	SELL	subscription	柿沼佑一 Yuichi Kakinuma	strategic	2.4M	¥357	-70.0%	¥141M ($912K)
2025-03-31	SELL	Market Buy	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	1.3M	¥368	-65.0%	¥225M ($1.5M)
2023-01-13	BUY	subscription	ハイツ・キャピタル・マネジメント・インク(Heights Capital Management, Inc.) Heights Capital Management, Inc.	passive	1.9M	¥1,164	-47.9%	¥2.2B ($14.1M)
2021-05-06	BUY	unknown	柿沼佑一 KAKINUMA YUICHI	strategic	2.4M	¥1,002	-	-
2021-03-22	SELL	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	804.2K	¥1,030	+41.1%	¥175M ($1.1M)
2021-03-22	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・エルエルシー Morgan Stanley & Co. LLC	other	199.5K	¥1,030	-41.1%	¥101M ($654K)
2021-03-22	SELL	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	-11.9K	¥1,030	+16.9%	¥24M ($153K)

Frequently asked questions

Who has been buying RaQualia Pharma Inc. stock?: 6 distinct investors have filed 4 disclosed large-shareholding filings in RaQualia Pharma Inc. (4579), most recently on 2026-01-29. 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 RaQualia Pharma Inc. have?: RaQualia Pharma Inc. has 4 buy-side and 8 sell-side disclosures on record, covering ¥4.6B ($29.8M) in total reported value, spanning 2021-03-22 to 2026-01-29.
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.