Who has been buying Max Co., Ltd. stock?

8 distinct investors have filed 6 disclosed large-shareholding filings in Max Co., Ltd. (6454), most recently on 2026-03-12. 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 Max Co., Ltd. have?

Max Co., Ltd. has 6 buy-side and 4 sell-side disclosures on record, covering ¥9.2B ($59.5M) in total reported value, spanning 2022-04-08 to 2026-03-12.

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.

Max Co., Ltd. 6454

Company

マックス株式会社Max Co., Ltd.

Investors

Buys

Total Value

¥9.2B ($59.5M)

Avg Return

+112.97%

Last Filing

2026-03-12

Max Co., Ltd. (6454) has 6 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥9.2B ($59.5M) in reported transaction value. The earliest filing StockDrifts holds for Max Co., Ltd. is dated 2022-04-08; the most recent is 2026-03-12. Across these filings the average return since disclosure is +112.97%, 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
2026-08-06	SELL	Market Buy	第一生命保険株式会社 Daiichi Life Insurance Co., Ltd.	passive	13.4M	¥1,922	-0.4%	¥5.3B ($34.2M)
2026-03-12	BUY	acquisition	バリューアクト・キャピタル・マネジメント・エルピー(ValueAct Capital Management	activist	0	¥1,717.5	+12.3%	-
2026-03-12	BUY	acquisition	バリューアクト・ジャパン・マスター・ファンド・エルピー(ValueAct Japan Master Fund	activist	3.4M	¥1,717.5	+12.3%	¥5.8B ($37.7M)
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	1.0M	¥1,107.5	+74.2%	¥21M ($133K)
2025-03-24	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.8M	¥1,107.5	+74.2%	¥41M ($266K)
2024-12-06	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.8M	¥835	-131.0%	¥361M ($2.3M)
2024-12-06	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.0M	¥835	-131.0%	¥194M ($1.3M)
2023-03-15	SELL	unknown	マックス共栄会第二持株会理事長田中征男 Yukuo Tanaka	unknown	0	¥529.75	-264.1%	¥1.6B ($10.1M)
2023-03-15	BUY	unknown	マックス共栄会第二持株会理事長飯島洋一 Youichi Iijima	strategic	3.3M	¥529.75	+264.1%	¥1.8B ($11.3M)
2022-04-08	BUY	unknown	マックス共栄会第一持株会理事長堀隆 Takashi Hori	strategic	3.8M	¥403	+378.7%	¥1.5B ($9.9M)
2022-04-08	BUY	unknown	マックス共栄会第一持株会理事長堀隆 Takashi Hori	strategic	3.8M	¥403	-	¥1.5B ($9.9M)
2022-04-08	SELL	unknown	マックス共栄会第一持株会理事長原田政樹 Masaki Harada	unknown	0	¥403	-378.7%	¥1.4B ($9.2M)

Frequently asked questions

Who has been buying Max Co., Ltd. stock?: 8 distinct investors have filed 6 disclosed large-shareholding filings in Max Co., Ltd. (6454), most recently on 2026-03-12. 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 Max Co., Ltd. have?: Max Co., Ltd. has 6 buy-side and 4 sell-side disclosures on record, covering ¥9.2B ($59.5M) in total reported value, spanning 2022-04-08 to 2026-03-12.
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.