Who has been buying Riken Corporation stock?

10 distinct investors have filed 6 disclosed large-shareholding filings in Riken Corporation (6462), most recently on 2023-06-06. 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 Riken Corporation have?

Riken Corporation has 6 buy-side and 8 sell-side disclosures on record, covering ¥1.2B ($7.9M) in total reported value, spanning 2021-03-17 to 2023-06-06.

Where does StockDrifts get Riken Corporation 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.

Riken Corporation 6462

Company

株式会社リケンRiken Corporation

Investors

Buys

Total Value

¥1.2B ($7.9M)

Avg Return

+48.01%

Last Filing

2023-06-06

Riken Corporation (6462) has 6 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥1.2B ($7.9M) in reported transaction value. The earliest filing StockDrifts holds for Riken Corporation is dated 2021-03-17; the most recent is 2023-06-06. 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 +48.01%, 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
2023-06-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	153.7K	¥2,763	+34.6%	¥121M ($781K)
2023-06-06	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	193.0K	¥2,763	-34.6%	¥198M ($1.3M)
2023-06-06	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	261.7K	¥2,763	-34.6%	¥3M ($19K)
2022-11-21	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	109.9K	¥2,276	-63.4%	¥131M ($844K)
2022-11-21	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	264.4K	¥2,276	-63.4%	¥150M ($969K)
2022-11-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	261.7K	¥2,276	+63.4%	¥596M ($3.8M)
2022-06-06	BUY	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	3.9K	¥2,356	+57.9%	¥883M ($5.7M)
2022-06-06	SELL	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	63.1K	¥2,356	-57.9%	¥28M ($178K)
2022-06-06	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	229.9K	¥2,356	-57.9%	¥103M ($664K)
2022-06-06	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	255.3K	¥2,356	+57.9%	¥602M ($3.9M)
2022-04-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	176.8K	¥2,393	-55.5%	¥257M ($1.7M)
2022-04-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	486.4K	¥2,393	+55.5%	¥1.2B ($7.5M)
2021-08-16	BUY	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	51.4K	¥2,636	+41.1%	¥135M ($874K)
2021-08-16	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	75.0K	¥2,636	+41.1%	¥124M ($797K)
2021-08-16	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	273.3K	¥2,636	+41.1%	¥45M ($290K)
2021-08-16	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	255.3K	¥2,636	+41.1%	¥673M ($4.3M)
2021-04-21	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	167.4K	¥2,375	+56.6%	¥104M ($669K)
2021-04-21	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	330.1K	¥2,375	+56.6%	¥164M ($1.1M)
2021-04-21	BUY	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	261.7K	¥2,375	+56.6%	¥622M ($4.0M)
2021-03-17	SELL	unknown	日本バリュー・インベスターズ株式会社 Nippon Value Investors KK	other	413.4K	-	-	-

Frequently asked questions

Who has been buying Riken Corporation stock?: 10 distinct investors have filed 6 disclosed large-shareholding filings in Riken Corporation (6462), most recently on 2023-06-06. 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 Riken Corporation have?: Riken Corporation has 6 buy-side and 8 sell-side disclosures on record, covering ¥1.2B ($7.9M) in total reported value, spanning 2021-03-17 to 2023-06-06.
Where does StockDrifts get Riken Corporation 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 Riken Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.