Who has been buying Shinyei Kaisha stock?

6 distinct investors have filed 2 disclosed large-shareholding filings in Shinyei Kaisha (3004), most recently on 2025-03-04. 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 Shinyei Kaisha have?

Shinyei Kaisha has 2 buy-side and 8 sell-side disclosures on record, covering ¥209M ($1.4M) in total reported value, spanning 2022-01-06 to 2025-03-04.

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.

Shinyei Kaisha 3004

Company

神栄株式会社Shinyei Kaisha

Investors

Buys

Total Value

¥209M ($1.4M)

Avg Return

+90.36%

Last Filing

2025-03-04

Shinyei Kaisha (3004) has 2 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥209M ($1.4M) in reported transaction value. The earliest filing StockDrifts holds for Shinyei Kaisha is dated 2022-01-06; the most recent is 2025-03-04. Across these filings the average return since disclosure is +90.36%, 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
2025-03-04	SELL	unknown	あいおいニッセイ同和損害保険株式会社 Aioi Nissay Dowa Insurance Co.,Ltd.	strategic	121.0K	¥1,668	-23.5%	¥241M ($1.6M)
2025-02-18	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	187.5K	¥1,683	-	-
2025-02-18	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	strategic	90.0K	¥1,683	-22.4%	¥702K ($5K)
2025-02-18	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	¥1,683	-22.4%	¥9M ($59K)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	187.5K	¥1,840	-	-
2024-07-29	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	90.4K	¥1,840	-12.0%	¥11M ($69K)
2024-07-29	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	5.5K	¥1,840	-12.0%	¥5M ($35K)
2024-02-19	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	187.5K	¥1,645	-25.2%	¥16M ($102K)
2024-02-19	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	96.2K	¥1,645	-25.2%	¥46M ($296K)
2024-02-19	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	8.3K	¥1,645	+25.2%	¥2M ($13K)
2024-02-19	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	3.7K	¥1,645	-25.2%	¥3M ($18K)
2023-11-16	BUY	unknown	株式会社メディパルホールディングス MEDIPAL HOLDINGS CORPORATION	strategic	208.5K	¥1,803	-	-
2022-01-06	BUY	unknown	株式会社メディパルホールディングス MEDIPAL HOLDINGS CORPORATION	strategic	208.5K	¥994	+107.2%	¥207M ($1.3M)

Frequently asked questions

Who has been buying Shinyei Kaisha stock?: 6 distinct investors have filed 2 disclosed large-shareholding filings in Shinyei Kaisha (3004), most recently on 2025-03-04. 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 Shinyei Kaisha have?: Shinyei Kaisha has 2 buy-side and 8 sell-side disclosures on record, covering ¥209M ($1.4M) in total reported value, spanning 2022-01-06 to 2025-03-04.
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.