Who has been buying Hoden Seimitsu Kako Kenkyusho Co., Ltd. stock?

9 distinct investors have filed 6 disclosed large-shareholding filings in Hoden Seimitsu Kako Kenkyusho Co., Ltd. (6469), most recently on 2026-04-24. 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 Hoden Seimitsu Kako Kenkyusho Co., Ltd. have?

Hoden Seimitsu Kako Kenkyusho Co., Ltd. has 6 buy-side and 5 sell-side disclosures on record, covering ¥8.4B ($54.0M) in total reported value, spanning 2021-05-19 to 2026-04-24.

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.

Hoden Seimitsu Kako Kenkyusho Co., Ltd. 6469

Company

株式会社放電精密加工研究所Hoden Seimitsu Kako Kenkyusho Co., Ltd.

Investors

Buys

Total Value

¥8.4B ($54.0M)

Avg Return

+252.72%

Last Filing

2026-04-24

Hoden Seimitsu Kako Kenkyusho Co., Ltd. (6469) has 6 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥8.4B ($54.0M) in reported transaction value. The earliest filing StockDrifts holds for Hoden Seimitsu Kako Kenkyusho Co., Ltd. is dated 2021-05-19; the most recent is 2026-04-24. Across these filings the average return since disclosure is +252.72%, 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
2026-04-24	SELL	unknown	株式会社二村	other	294.6K	¥3,200	+10.4%	¥897M ($5.8M)
2026-04-24	SELL	unknown	二村勝彦	other	243.0K	¥3,200	+10.4%	¥217M ($1.4M)
2024-03-18	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	325.8K	¥1,806	+58.7%	¥579M ($3.7M)
2024-03-18	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	strategic	14.0K	¥1,806	-58.7%	¥12M ($77K)
2024-03-18	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	unknown	0	¥1,806	-58.7%	¥144M ($932K)
2024-03-01	BUY	unknown	三菱重工業株式会社 Mitsubishi Heavy Industries, Ltd.	strategic	3.7M	¥1,922	+49.1%	¥7.2B ($46.5M)
2022-05-11	BUY	negotiated	二村昭二 Futamura Shouji	activist	182.5K	¥622	+360.8%	¥112M ($724K)
2022-05-11	SELL	negotiated	有限会社善 Zen Limited Company	other	0	¥622	-360.8%	¥1M ($10K)
2021-11-15	BUY	unknown	株式会社二村 FUTAMURA Co.,Ltd.	other	389.1K	¥804	+256.5%	¥313M ($2.0M)
2021-11-15	BUY	unknown	株式会社二村 FUTAMURA Co.,Ltd.	other	389.1K	¥804	+256.5%	¥313M ($2.0M)
2021-11-15	BUY	unknown	二村勝彦 Katsuhiko Nimura	other	210.4K	¥804	+256.5%	¥169M ($1.1M)
2021-05-19	BUY	Market Buy	東京中小企業投資育成株式会社 TOKYO SMALL AND MEDIUM BUSINESS INVESTMENT & CONSULTATION CO.,LTD	passive	733.9K	¥738	-	-

Frequently asked questions

Who has been buying Hoden Seimitsu Kako Kenkyusho Co., Ltd. stock?: 9 distinct investors have filed 6 disclosed large-shareholding filings in Hoden Seimitsu Kako Kenkyusho Co., Ltd. (6469), most recently on 2026-04-24. 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 Hoden Seimitsu Kako Kenkyusho Co., Ltd. have?: Hoden Seimitsu Kako Kenkyusho Co., Ltd. has 6 buy-side and 5 sell-side disclosures on record, covering ¥8.4B ($54.0M) in total reported value, spanning 2021-05-19 to 2026-04-24.
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.