Who has been buying TRADE WORKS Co., Ltd stock?

7 distinct investors have filed 4 disclosed large-shareholding filings in TRADE WORKS Co., Ltd (3997), most recently on 2025-12-26. 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 TRADE WORKS Co., Ltd have?

TRADE WORKS Co., Ltd has 4 buy-side and 5 sell-side disclosures on record, covering ¥56M ($364K) in total reported value, spanning 2021-07-19 to 2025-12-26.

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.

TRADE WORKS Co., Ltd 3997

Company

株式会社トレードワークスTRADE WORKS Co., Ltd

Investors

Buys

Total Value

¥56M ($364K)

Avg Return

+302.76%

Last Filing

2025-12-26

TRADE WORKS Co., Ltd (3997) has 4 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥56M ($364K) in reported transaction value. The earliest filing StockDrifts holds for TRADE WORKS Co., Ltd is dated 2021-07-19; the most recent is 2025-12-26. Across these filings the average return since disclosure is +302.76%, 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
2026-09-01	SELL	unknown	浅見勝弘 Katsuhiro Asami	activist	11.1M	¥391	-10.0%	¥287M ($1.9M)
2025-12-26	SELL	unknown	浅見勝弘 Katsuhiro Asami	activist	11.1M	¥439	+2.0%	¥792M ($5.1M)
2025-12-26	BUY	unknown	浅見勝弘 Katsuhiro Asami	activist	11.2M	¥439	-	¥749M ($4.8M)
2025-12-26	BUY	unknown	浅見勝弘 Katsuhiro Asami	activist	11.2M	¥439	-	¥749M ($4.8M)
2025-03-21	BUY	Market Buy	SBIホールディングス株式会社 SBI Holdings Co., Ltd.	passive	200.0K	¥135	-	-
2025-03-21	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	80	¥135	-218.5%	¥7M ($46K)
2025-03-11	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	53.0K	¥131.2	+227.7%	¥7M ($45K)
2025-03-11	BUY	Market Buy	SBIホールディングス株式会社 SBI Holdings Co., Ltd.	passive	200.0K	¥131.2	+227.7%	¥26M ($169K)
2024-05-17	BUY	unknown	株式会社ミンカブソリューションサービシーズ MINKABU SOLUTION SERVICES , Inc.	other	180.0K	¥79.9	+438.2%	¥14M ($93K)
2023-01-04	SELL	Market Buy	大野寿美 Toshimi Ohno	passive	0	¥108.4	-296.7%	¥18M ($118K)
2021-11-18	SELL	unknown	浅見勝弘 Katsuhiro Asami	activist	1.1M	¥133.7	-221.6%	¥3M ($17K)
2021-09-03	BUY	unknown	市川俊雄 Toshio Ichikawa	unknown	0	¥79.9	-	¥16M ($102K)
2021-09-03	BUY	unknown	市川俊雄 Toshio Ichikawa	unknown	0	¥79.9	+438.2%	¥16M ($102K)
2021-07-19	SELL	Market Buy	auカブコム証券株式会社 Mitsubishi UFJ Financial Group Inc.	passive	150.0K	¥82.2	-423.1%	¥13M ($83K)

Frequently asked questions

Who has been buying TRADE WORKS Co., Ltd stock?: 7 distinct investors have filed 4 disclosed large-shareholding filings in TRADE WORKS Co., Ltd (3997), most recently on 2025-12-26. 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 TRADE WORKS Co., Ltd have?: TRADE WORKS Co., Ltd has 4 buy-side and 5 sell-side disclosures on record, covering ¥56M ($364K) in total reported value, spanning 2021-07-19 to 2025-12-26.
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.