Who has been buying RenetJapanGroup,Inc. stock?

4 distinct investors have filed 11 disclosed large-shareholding filings in RenetJapanGroup,Inc. (3556), most recently on 2026-04-03. 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 RenetJapanGroup,Inc. have?

RenetJapanGroup,Inc. has 11 buy-side and 10 sell-side disclosures on record, covering ¥2.4B ($15.2M) in total reported value, spanning 2021-05-26 to 2026-04-03.

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.

RenetJapanGroup,Inc. 3556

Company

リネットジャパングループ株式会社RenetJapanGroup,Inc.

Investors

Buys

Total Value

¥2.4B ($15.2M)

Avg Return

+193.41%

Last Filing

2026-04-03

RenetJapanGroup,Inc. (3556) has 11 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥2.4B ($15.2M) in reported transaction value. The earliest filing StockDrifts holds for RenetJapanGroup,Inc. is dated 2021-05-26; the most recent is 2026-04-03. Across these filings the average return since disclosure is +193.41%, 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
2026-04-03	BUY	Market Buy	黒田武志	activist	5.6M	¥923	-12.1%	¥325M ($2.1M)
2026-04-03	SELL	Market Buy	合同会社TKコーポレ―ション	strategic	1.4M	¥923	+12.1%	¥1M ($9K)
2026-04-03	BUY	Market Buy	黒田武志	activist	5.6M	¥923	-12.1%	¥325M ($2.1M)
2026-04-03	SELL	Market Buy	合同会社TKコーポレ―ション	strategic	1.4M	¥923	+12.1%	¥1M ($9K)
2026-03-31	BUY	private	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	1.6M	¥904	-10.3%	¥1.4B ($9.2M)
2025-04-10	BUY	Market Buy	合同会社TKコーポレ―ション TK Corporation LLC	strategic	1.4M	¥252	+221.8%	¥21M ($138K)
2025-04-10	BUY	negotiated	黒田武志 KURODA TAKESHI	activist	5.0M	¥252	+221.8%	¥41M ($264K)
2025-04-10	BUY	Market Buy	黒田武志 KURODA TAKESHI	activist	5.0M	¥252	+221.8%	¥41M ($264K)
2025-04-10	BUY	negotiated	合同会社TKコーポレ―ション TK Corporation LLC	strategic	1.4M	¥252	+221.8%	¥21M ($138K)
2024-09-13	BUY	Market Buy	合同会社TKコーポレ―ション TK Corporation LLC	strategic	1.3M	¥284	+185.6%	¥205M ($1.3M)
2024-09-13	BUY	negotiated	合同会社TKコーポレ―ション TK Corporation LLC	strategic	1.3M	¥284	+185.6%	¥205M ($1.3M)
2024-09-13	BUY	negotiated	黒田武志 KURODA TAKESHI	activist	4.8M	¥284	+185.6%	¥9M ($56K)
2024-09-13	BUY	Market Buy	黒田武志 KURODA TAKESHI	activist	4.8M	¥284	+185.6%	¥9M ($56K)
2022-05-27	SELL	negotiated	黒田武志 KURODA TAKESHI	activist	3.9M	¥411	-97.3%	¥5M ($33K)
2022-05-27	SELL	negotiated	合同会社TKコーポレ―ション TK Corporation LLC	strategic	495.0K	¥411	-97.3%	¥505K ($3K)
2022-03-22	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	175.9K	¥491	-65.2%	¥348M ($2.2M)
2021-11-05	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	937.8K	¥624	-30.0%	¥80M ($518K)
2021-09-28	SELL	negotiated	黒田武志 KURODA TAKESHI	activist	3.9M	¥681	-19.1%	¥3M ($16K)
2021-09-28	SELL	negotiated	合同会社TKコーポレ―ション TK Corporation LLC	strategic	495.0K	¥681	-19.1%	¥834K ($5K)
2021-05-26	SELL	negotiated	黒田武志 KURODA TAKESHI	activist	3.9M	¥889	+8.8%	¥7M ($42K)
2021-05-26	SELL	negotiated	合同会社TKコーポレ―ション TK Corporation LLC	strategic	495.0K	¥889	+8.8%	¥1M ($7K)

Frequently asked questions

Who has been buying RenetJapanGroup,Inc. stock?: 4 distinct investors have filed 11 disclosed large-shareholding filings in RenetJapanGroup,Inc. (3556), most recently on 2026-04-03. 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 RenetJapanGroup,Inc. have?: RenetJapanGroup,Inc. has 11 buy-side and 10 sell-side disclosures on record, covering ¥2.4B ($15.2M) in total reported value, spanning 2021-05-26 to 2026-04-03.
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.