Who has been buying RIZAPグループ株式会社 stock?

3 distinct investors have filed 4 disclosed large-shareholding filings in RIZAPグループ株式会社 (2928), most recently on 2026-04-16. 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 RIZAPグループ株式会社 have?

RIZAPグループ株式会社 has 4 buy-side and 11 sell-side disclosures on record, spanning 2021-04-19 to 2026-04-16.

Where does StockDrifts get RIZAPグループ株式会社 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.

RIZAPグループ株式会社 2928

Company

RIZAPグループ株式会社

Investors

Buys

Total Value

—

Avg Return

—

Last Filing

2026-04-16

RIZAPグループ株式会社 (2928) has 4 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 3 distinct investors. The earliest filing StockDrifts holds for RIZAPグループ株式会社 is dated 2021-04-19; the most recent is 2026-04-16. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan).

Price & insider activity (12 months)

No price data available

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-08-07	SELL	unknown	瀬戸早苗	strategic	23.2M	-	-	-
2026-08-07	BUY	Market Buy	CBM株式会社	strategic	221.0M	-	-	-
2026-08-07	SELL	subscription	瀬戸健	activist	219.1M	-	-	-
2026-04-16	BUY	unknown	CBM株式会社	strategic	177.4M	-	-	-
2026-04-16	BUY	unknown	瀬戸早苗	strategic	23.2M	-	-	-
2026-04-16	BUY	unknown	瀬戸健	activist	262.8M	-	-	-
2026-04-10	BUY	unknown	CBM株式会社	strategic	177.4M	-	-	-
2026-04-10	BUY	unknown	瀬戸早苗	strategic	23.2M	-	-	-
2026-04-10	BUY	unknown	瀬戸健	activist	262.8M	-	-	-
2025-03-21	BUY	subscription	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2025-03-21	BUY	subscription	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2025-03-21	SELL	subscription	瀬戸健 SETO TAKESHI	activist	260.7M	-	-	-
2024-09-12	SELL	subscription	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2024-09-12	SELL	subscription	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2024-09-12	SELL	subscription	瀬戸健 SETO TAKESHI	activist	267.6M	-	-	-
2024-06-06	BUY	subscription	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2024-06-06	BUY	subscription	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2024-06-06	BUY	subscription	瀬戸健 SETO TAKESHI	activist	267.6M	-	-	-
2024-04-26	BUY	subscription	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2024-04-26	BUY	subscription	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2024-04-26	BUY	subscription	瀬戸健 SETO TAKESHI	activist	267.6M	-	-	-
2024-04-05	SELL	subscription	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2024-04-05	SELL	subscription	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2024-04-05	BUY	subscription	瀬戸健 SETO TAKESHI	activist	247.6M	-	-	-
2024-03-22	BUY	subscription	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2024-03-22	BUY	subscription	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2024-03-22	BUY	subscription	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2024-03-22	BUY	subscription	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2024-03-22	BUY	subscription	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2024-03-22	BUY	subscription	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2024-03-22	BUY	subscription	瀬戸健 SETO TAKESHI	activist	198.7M	-	-	-
2024-03-22	BUY	subscription	瀬戸健 SETO TAKESHI	activist	253.7M	-	-	-
2024-03-22	SELL	subscription	瀬戸健 SETO TAKESHI	activist	247.6M	-	-	-
2024-02-02	SELL	unknown	瀬戸健 SETO TAKESHI	activist	148.0M	-	-	-
2024-02-02	BUY	subscription	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2024-02-02	BUY	subscription	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2024-02-02	BUY	unknown	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2024-02-02	BUY	unknown	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2024-02-02	BUY	subscription	瀬戸健 SETO TAKESHI	activist	253.7M	-	-	-
2021-04-19	SELL	unknown	CBM株式会社 CBM Co., Ltd.	strategic	177.4M	-	-	-
2021-04-19	SELL	unknown	瀬戸早苗 Sanae Seto	strategic	23.2M	-	-	-
2021-04-19	SELL	unknown	瀬戸健 SETO TAKESHI	activist	149.9M	-	-	-

Frequently asked questions

Who has been buying RIZAPグループ株式会社 stock?: 3 distinct investors have filed 4 disclosed large-shareholding filings in RIZAPグループ株式会社 (2928), most recently on 2026-04-16. 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 RIZAPグループ株式会社 have?: RIZAPグループ株式会社 has 4 buy-side and 11 sell-side disclosures on record, spanning 2021-04-19 to 2026-04-16.
Where does StockDrifts get RIZAPグループ株式会社 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 RIZAPグループ株式会社. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.