Who has been buying Asahi Rubber Inc. stock?

1 distinct investors have filed 3 disclosed large-shareholding filings in Asahi Rubber Inc. (5162), most recently on 2026-05-14. 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 Asahi Rubber Inc. have?

Asahi Rubber Inc. has 3 buy-side and 0 sell-side disclosures on record, covering ¥74M ($480K) in total reported value, spanning 2025-10-20 to 2026-05-14.

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.

Asahi Rubber Inc. 5162

Company

株式会社朝日ラバーAsahi Rubber Inc.

Investors

Buys

Total Value

¥74M ($480K)

Avg Return

+5.12%

Last Filing

2026-05-14

Asahi Rubber Inc. (5162) has 3 disclosed large-shareholding filings and 0 disclosed disposals on record, filed by 1 distinct investors. Together those filings cover ¥74M ($480K) in reported transaction value. The earliest filing StockDrifts holds for Asahi Rubber Inc. is dated 2025-10-20; the most recent is 2026-05-14. Across these filings the average return since disclosure is +5.12%, 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
2026-08-31	BUY	unknown	株式会社タマス TAMASU CO.,LTD.	strategic	423.9K	¥799	-2.3%	¥339M ($2.2M)
2026-08-31	BUY	unknown	株式会社タマス TAMASU CO.,LTD.	strategic	423.9K	¥799	-	¥339M ($2.2M)
2026-07-24	BUY	unknown	朝日ラバー共栄持株会理事長円谷修一 Shuichi Tsumuraya, Chairman of ASAHI RUBBER Business Partner Stock Ownership Association	strategic	232.4K	¥786	-0.6%	¥183M ($1.2M)
2026-06-16	BUY	Market Buy	晋文金属株式会社	activist	391.2K	¥754	+3.6%	¥27M ($175K)
2026-06-16	BUY	Market Buy	黄聖博	passive	198.9K	¥754	-	¥150M ($968K)
2026-05-14	SELL	Market Buy	黄聖博	passive	128.9K	¥700	-11.6%	¥49M ($317K)
2026-05-14	BUY	Market Buy	晋文金属株式会社	activist	461.2K	¥700	+11.6%	¥49M ($317K)
2026-05-14	BUY	Market Buy	晋文金属株式会社 SHINBUNKINZOKU CO., LTD.	activist	461.2K	¥700	+11.6%	¥74M ($480K)
2026-04-03	BUY	Market Buy	晋文金属株式会社 SHINBUNKINZOKU CO., LTD.	activist	355.1K	¥770	+1.4%	¥41M ($264K)
2025-10-20	BUY	Market Buy	晋文金属株式会社 SHINBUNKINZOKU CO., LTD.	activist	302.2K	¥623	+25.4%	¥188M ($1.2M)

Frequently asked questions

Who has been buying Asahi Rubber Inc. stock?: 1 distinct investors have filed 3 disclosed large-shareholding filings in Asahi Rubber Inc. (5162), most recently on 2026-05-14. 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 Asahi Rubber Inc. have?: Asahi Rubber Inc. has 3 buy-side and 0 sell-side disclosures on record, covering ¥74M ($480K) in total reported value, spanning 2025-10-20 to 2026-05-14.
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.