Who has been buying Kusuri No Aoki Holdings Co., Ltd. stock?

30 distinct investors have filed 35 disclosed large-shareholding filings in Kusuri No Aoki Holdings Co., Ltd. (3549), 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 Kusuri No Aoki Holdings Co., Ltd. have?

Kusuri No Aoki Holdings Co., Ltd. has 35 buy-side and 26 sell-side disclosures on record, covering ¥136.4B ($880.2M) in total reported value, spanning 2021-06-01 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.

Kusuri No Aoki Holdings Co., Ltd. 3549

Company

株式会社クスリのアオキホールディングスKusuri No Aoki Holdings Co., Ltd.

Investors

Buys

Total Value

¥136.4B ($880.2M)

Avg Return

+14.70%

Last Filing

2026-05-13

Kusuri No Aoki Holdings Co., Ltd. (3549) has 35 disclosed large-shareholding filings and 26 disclosed disposals on record, filed by 30 distinct investors. Together those filings cover ¥136.4B ($880.2M) in reported transaction value. The earliest filing StockDrifts holds for Kusuri No Aoki Holdings Co., Ltd. is dated 2021-06-01; the most recent is 2026-05-13. Across these filings the average return since disclosure is +14.70%, 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
2026-09-16	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	15.4M	¥3,993	-1.1%	¥4.0B ($25.6M)
2026-08-24	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	14.4M	¥4,129	-4.4%	¥4.1B ($26.7M)
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.	other	13.4M	¥3,847	+2.6%	¥110M ($712K)
2026-04-08	BUY	Market Buy	合同会社KS Aviation Godokaisha KS Aviation	passive	3.7M	¥3,905	+1.1%	¥1.3B ($8.4M)
2026-04-08	BUY	acquisition	合同会社HONJIN	passive	3.7M	¥3,905	+1.1%	¥14.3B ($92.0M)
2026-04-08	BUY	acquisition	合同会社STREAM	passive	3.7M	¥3,905	+1.1%	¥14.3B ($92.0M)
2026-04-08	BUY	acquisition	合同会社GARDEN	passive	3.7M	¥3,905	+1.1%	¥14.3B ($92.0M)
2026-02-20	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	13.4M	¥4,021	-1.8%	¥12.8B ($82.4M)
2026-02-20	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	13.4M	¥4,021	-	¥12.8B ($82.4M)
2026-01-19	BUY	Market Buy	イオン株式会社	strategic	9.7M	¥4,621	-14.6%	¥840M ($5.4M)
2026-01-19	BUY	Market Buy	株式会社ツルハ	strategic	4.9M	¥4,621	-	¥22.5B ($144.9M)
2025-09-04	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	11.2M	¥3,880	+1.8%	¥4.2B ($27.1M)
2025-06-06	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	62.9K	¥3,504	-12.7%	¥10.6B ($68.4M)
2025-06-06	BUY	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	2.3M	¥3,504	+12.7%	¥147M ($950K)
2025-05-22	BUY	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	2.2M	¥3,464	+14.0%	¥7.6B ($49.3M)
2025-05-22	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	3.1M	¥3,464	+14.0%	¥10.7B ($69.1M)
2024-12-27	SELL	negotiated	青木保外志 Hogaishi Aoki	activist	2.0M	¥3,215	-22.8%	¥9.5B ($61.0M)
2024-12-27	SELL	negotiated	青木公子 Kimiko Aoki	strategic	216.0K	¥3,215	-22.8%	¥68M ($436K)
2024-12-27	SELL	negotiated	有限会社三和薬商 Sanwa Yakusho Co., Ltd.	strategic	1.1M	¥3,215	-22.8%	¥372M ($2.4M)
2024-12-27	BUY	negotiated	株式会社Common Common Co., Ltd.	activist	2.4M	¥3,215	-	¥7.9B ($50.8M)
2024-09-09	BUY	unknown	合同会社GARDEN GARDEN LLC	strategic	3.5M	¥3,361	-	-
2024-09-09	BUY	unknown	合同会社臨川書屋 Rinsen Shoya LLC	strategic	6.4M	¥3,361	-	-
2024-09-09	BUY	unknown	合同会社KS Aviation Godokaisha KS Aviation	strategic	3.7M	¥3,361	-	-
2024-09-09	BUY	unknown	合同会社A870 Godokaisha A870	strategic	4.2M	¥3,361	-	-
2024-09-09	BUY	unknown	合同会社青木二階堂 Aoki Nikaido LLC	strategic	6.4M	¥3,361	-	-
2024-09-09	BUY	unknown	合同会社Mont Blanc Mont Blanc LLC	strategic	818.1K	¥3,361	-	-
2024-09-09	BUY	unknown	合同会社HONJIN HONJIN LLC	strategic	3.5M	¥3,361	-	-
2024-09-09	BUY	unknown	合同会社STREAM LLC STREAM	strategic	3.5M	¥3,361	-	-
2024-09-02	BUY	unknown	合同会社KS Aviation Godokaisha KS Aviation	strategic	3.7M	¥3,307	+19.4%	¥12.1B ($78.1M)
2024-09-02	BUY	unknown	合同会社A870 Godokaisha A870	strategic	4.2M	¥3,307	+19.4%	¥13.8B ($88.9M)
2024-09-02	BUY	negotiated	青木孝憲 AOKI TAKANORI	activist	10.6M	¥3,307	-	-
2024-09-02	SELL	unknown	青木宏憲 AOKI HIRONORI	unknown	0	¥3,307	-19.4%	¥42.2B ($272.0M)
2024-09-02	BUY	unknown	合同会社KS Aviation Godokaisha KS Aviation	strategic	3.7M	¥3,307	-	-
2024-09-02	BUY	unknown	合同会社HONJIN HONJIN LLC	strategic	3.5M	¥3,307	-	¥11.7B ($75.6M)
2024-09-02	BUY	unknown	合同会社青木二階堂 Aoki Nikaido LLC	strategic	6.4M	¥3,307	+19.4%	¥21.1B ($136.0M)
2024-09-02	BUY	unknown	合同会社GARDEN GARDEN LLC	strategic	3.5M	¥3,307	+19.4%	¥11.7B ($75.6M)
2024-09-02	BUY	unknown	合同会社臨川書屋 Rinsen Shoya LLC	strategic	6.4M	¥3,307	+19.4%	¥21.1B ($136.0M)
2024-09-02	BUY	unknown	合同会社A870 Godokaisha A870	strategic	4.2M	¥3,307	+19.4%	¥13.8B ($88.9M)
2024-09-02	BUY	unknown	合同会社KS Aviation Godokaisha KS Aviation	strategic	3.7M	¥3,307	+19.4%	¥12.1B ($78.1M)
2024-09-02	BUY	negotiated	青木宏憲 AOKI HIRONORI	activist	12.7M	¥3,307	-	-
2024-09-02	BUY	negotiated	合同会社A870 Godokaisha A870	strategic	4.2M	¥3,307	-	-
2024-09-02	BUY	unknown	合同会社A870 Godokaisha A870	strategic	4.2M	¥3,307	-	-
2024-09-02	BUY	unknown	合同会社青木二階堂 Aoki Nikaido LLC	strategic	6.4M	¥3,307	-	¥21.1B ($136.0M)
2024-09-02	BUY	unknown	合同会社臨川書屋 Rinsen Shoya LLC	strategic	6.4M	¥3,307	-	¥21.1B ($136.0M)
2024-09-02	BUY	negotiated	合同会社Mont Blanc Mont Blanc LLC	strategic	818.1K	¥3,307	-	-
2024-09-02	BUY	negotiated	合同会社KS Aviation Godokaisha KS Aviation	strategic	3.7M	¥3,307	-	-
2024-09-02	BUY	unknown	合同会社Mont Blanc Mont Blanc LLC	strategic	818.1K	¥3,307	-	-
2024-09-02	BUY	unknown	合同会社STREAM LLC STREAM	strategic	3.5M	¥3,307	-	¥11.7B ($75.6M)
2024-09-02	BUY	unknown	合同会社GARDEN GARDEN LLC	strategic	3.5M	¥3,307	-	¥11.7B ($75.6M)
2024-09-02	BUY	unknown	合同会社Mont Blanc Mont Blanc LLC	strategic	818.1K	¥3,307	+19.4%	¥2.7B ($17.5M)

Showing the 50 most recent of 92 filings.

Frequently asked questions

Who has been buying Kusuri No Aoki Holdings Co., Ltd. stock?: 30 distinct investors have filed 35 disclosed large-shareholding filings in Kusuri No Aoki Holdings Co., Ltd. (3549), 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 Kusuri No Aoki Holdings Co., Ltd. have?: Kusuri No Aoki Holdings Co., Ltd. has 35 buy-side and 26 sell-side disclosures on record, covering ¥136.4B ($880.2M) in total reported value, spanning 2021-06-01 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.