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

6 distinct investors have filed 13 disclosed large-shareholding filings in Valtes Co., Ltd. (4442), most recently on 2025-12-25. 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 Valtes Co., Ltd. have?

Valtes Co., Ltd. has 13 buy-side and 13 sell-side disclosures on record, covering ¥2.2B ($14.1M) in total reported value, spanning 2021-04-16 to 2025-12-25.

Where does StockDrifts get Valtes Co., Ltd. insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

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.

Valtes Co., Ltd. 4442

Company

バルテス株式会社Valtes Co., Ltd.

Investors

Buys

Total Value

¥2.2B ($14.1M)

Avg Return

-19.89%

Last Filing

2025-12-25

Valtes Co., Ltd. (4442) has 13 disclosed large-shareholding filings and 13 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥2.2B ($14.1M) in reported transaction value. The earliest filing StockDrifts holds for Valtes Co., Ltd. is dated 2021-04-16; the most recent is 2025-12-25. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is -19.89%, 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
2025-12-25	BUY	negotiated	株式会社ポリアフ	activist	1.2M	¥418	-2.4%	¥505M ($3.3M)
2025-12-25	SELL	negotiated	田中真史	activist	8.1M	¥418	-2.4%	¥3.5B ($22.3M)
2025-12-25	BUY	negotiated	田中真史	activist	8.6M	¥418	-2.4%	¥3.7B ($23.7M)
2025-12-25	BUY	negotiated	株式会社ポリアフ	activist	1.7M	¥418	+2.4%	¥719M ($4.6M)
2025-12-25	SELL	negotiated	田中真史	activist	8.1M	¥418	-2.4%	¥3.5B ($22.3M)
2025-12-25	BUY	negotiated	株式会社ポリアフ	activist	1.2M	¥418	-2.4%	¥505M ($3.3M)
2025-12-25	BUY	negotiated	田中真史	activist	8.6M	¥418	-2.4%	¥3.7B ($23.7M)
2025-12-25	BUY	negotiated	株式会社ポリアフ	activist	1.7M	¥418	+2.4%	¥719M ($4.6M)
2025-03-28	BUY	negotiated	田中真史 SHINJI TANAKA	activist	8.6M	¥435	-1.6%	¥3.7B ($24.1M)
2025-03-28	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	1.1M	¥435	-1.6%	¥487M ($3.1M)
2025-03-28	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	1.2M	¥435	-1.6%	¥513M ($3.3M)
2025-03-28	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	1.2M	¥435	-1.6%	¥513M ($3.3M)
2025-03-28	BUY	negotiated	田中真史 SHINJI TANAKA	activist	8.6M	¥435	-1.6%	¥3.7B ($24.1M)
2025-03-28	BUY	negotiated	田中真史 SHINJI TANAKA	activist	8.6M	¥435	-1.6%	¥3.7B ($24.1M)
2025-03-26	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	1.1M	¥446	-4.0%	¥89M ($574K)
2025-03-26	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	1.1M	¥446	-4.0%	¥89M ($574K)
2025-03-26	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	1.2M	¥446	-4.0%	¥89M ($574K)
2025-03-26	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	1.2M	¥446	-4.0%	¥89M ($574K)
2025-03-26	SELL	negotiated	田中真史 SHINJI TANAKA	activist	8.6M	¥446	+4.0%	¥89M ($574K)
2025-03-26	SELL	negotiated	田中真史 SHINJI TANAKA	activist	8.6M	¥446	+4.0%	¥89M ($574K)
2025-03-26	SELL	negotiated	田中真史 SHINJI TANAKA	activist	8.6M	¥446	+4.0%	¥89M ($574K)
2025-03-26	SELL	negotiated	田中真史 SHINJI TANAKA	activist	8.6M	¥446	+4.0%	¥89M ($574K)
2024-08-07	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	127.5K	¥411	+4.1%	¥52M ($338K)
2024-08-07	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	600.0K	¥411	+4.1%	¥243M ($1.6M)
2024-07-16	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	920.0K	¥551	-22.3%	¥507M ($3.3M)
2024-07-16	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	980.0K	¥551	-22.3%	¥540M ($3.5M)
2024-07-16	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	980.0K	¥551	-22.3%	¥540M ($3.5M)
2024-07-16	BUY	negotiated	田中真史 SHINJI TANAKA	activist	8.8M	¥551	-22.3%	¥4.8B ($31.2M)
2024-07-16	BUY	negotiated	田中真史 SHINJI TANAKA	activist	8.8M	¥551	-22.3%	¥4.8B ($31.2M)
2024-07-16	BUY	negotiated	田中真史 SHINJI TANAKA	activist	8.8M	¥551	-22.3%	¥4.8B ($31.2M)
2024-07-04	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	920.0K	¥553	-22.6%	¥509M ($3.3M)
2024-07-04	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	920.0K	¥553	-22.6%	¥509M ($3.3M)
2024-07-04	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	980.0K	¥553	-22.6%	¥542M ($3.5M)
2024-07-04	BUY	negotiated	株式会社ポリアフ Poliaf Co., Ltd.	activist	980.0K	¥553	-22.6%	¥542M ($3.5M)
2024-07-04	SELL	negotiated	田中真史 SHINJI TANAKA	activist	8.8M	¥553	+22.6%	¥442M ($2.9M)
2024-07-04	SELL	negotiated	田中真史 SHINJI TANAKA	activist	8.8M	¥553	+22.6%	¥442M ($2.9M)
2024-07-04	SELL	negotiated	田中真史 SHINJI TANAKA	activist	8.8M	¥553	+22.6%	¥442M ($2.9M)
2024-07-04	SELL	negotiated	田中真史 SHINJI TANAKA	activist	8.8M	¥553	+22.6%	¥442M ($2.9M)
2024-07-03	BUY	negotiated	田中真史 SHINJI TANAKA	activist	9.6M	¥541	-20.9%	¥5.2B ($33.4M)
2024-07-03	BUY	negotiated	田中真史 SHINJI TANAKA	activist	9.6M	¥541	-20.9%	¥5.2B ($33.4M)
2024-04-05	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	126.8K	¥503	-14.9%	¥64M ($411K)
2024-04-05	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	1.1M	¥503	-14.9%	¥528M ($3.4M)
2024-03-05	BUY	negotiated	田中真史 SHINJI TANAKA	activist	9.6M	¥519	-17.5%	¥5.0B ($32.1M)
2024-03-05	BUY	negotiated	田中真史 SHINJI TANAKA	activist	9.6M	¥519	-17.5%	¥5.0B ($32.1M)
2024-02-21	BUY	negotiated	田中真史 SHINJI TANAKA	activist	9.6M	¥505	-15.3%	¥4.8B ($31.2M)
2024-02-21	BUY	negotiated	田中真史 SHINJI TANAKA	activist	9.6M	¥505	-15.3%	¥4.8B ($31.2M)
2023-10-06	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	0	¥861	+50.3%	¥52M ($334K)
2023-10-06	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	315.0K	¥861	-50.3%	¥22M ($139K)
2023-09-28	BUY	negotiated	田中真史 SHINJI TANAKA	activist	3.2M	¥999	-57.2%	¥3.2B ($20.6M)
2023-08-01	BUY	negotiated	田中真史 SHINJI TANAKA	activist	3.2M	¥1,243.33	-65.6%	¥4.0B ($25.6M)

Showing the 50 most recent of 65 filings.

Frequently asked questions

Who has been buying Valtes Co., Ltd. stock?: 6 distinct investors have filed 13 disclosed large-shareholding filings in Valtes Co., Ltd. (4442), most recently on 2025-12-25. 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 Valtes Co., Ltd. have?: Valtes Co., Ltd. has 13 buy-side and 13 sell-side disclosures on record, covering ¥2.2B ($14.1M) in total reported value, spanning 2021-04-16 to 2025-12-25.
Where does StockDrifts get Valtes Co., Ltd. insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
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.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for Valtes Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.