Who has been buying Rikei Corporation stock?

8 distinct investors have filed 12 disclosed large-shareholding filings in Rikei Corporation (8226), most recently on 2026-01-21. 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 Rikei Corporation have?

Rikei Corporation has 12 buy-side and 9 sell-side disclosures on record, covering ¥1.1B ($7.1M) in total reported value, spanning 2021-06-11 to 2026-01-21.

Where does StockDrifts get Rikei 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.

Rikei Corporation 8226

Company

株式会社理経Rikei Corporation

Investors

Buys

Total Value

¥1.1B ($7.1M)

Avg Return

+50.96%

Last Filing

2026-01-21

Rikei Corporation (8226) has 12 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥1.1B ($7.1M) in reported transaction value. The earliest filing StockDrifts holds for Rikei Corporation is dated 2021-06-11; the most recent is 2026-01-21. 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 +50.96%, 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
2026-07-22	SELL	unknown	モルガン・スタンレー・アンド・カンパニー・エルエルシー Morgan Stanley & Co. LLC	other	11.5K	¥355	-9.3%	¥2M ($11K)
2026-07-22	SELL	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	283.2K	¥355	-9.3%	¥197M ($1.3M)
2026-07-22	BUY	unknown	モルガン・スタンレーMUFG証券株式会社	other	23.1K	¥355	+9.3%	¥8M ($53K)
2026-07-06	SELL	unknown	モルガン・スタンレー・アンド・カンパニー・エルエルシー Morgan Stanley & Co. LLC	other	16.0K	¥390	+3.1%	¥4M ($23K)
2026-07-06	BUY	Market Buy	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	837.4K	¥390	-3.1%	¥1M ($8K)
2026-06-19	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・エルエルシー Morgan Stanley & Co. LLC	other	24.9K	¥386	-4.9%	¥10M ($62K)
2026-06-19	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	835.2K	¥386	-4.9%	¥322M ($2.1M)
2026-01-21	BUY	unknown	野村アセットマネジメント株式会社	other	605.2K	¥515	+5.8%	¥294M ($1.9M)
2026-01-21	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	55.9K	¥515	+5.8%	¥27M ($175K)
2026-01-21	SELL	unknown	野村證券株式会社	other	100	¥515	+5.8%	¥49K ($313)
2025-12-19	BUY	unknown	野村アセットマネジメント株式会社	other	605.2K	¥431	+12.5%	¥294M ($1.9M)
2025-12-19	BUY	unknown	野村證券株式会社	other	201.4K	¥431	+12.5%	¥98M ($630K)
2025-11-10	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	470.8K	¥542	-10.5%	¥255M ($1.6M)
2025-11-10	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.2K	¥542	+10.5%	¥200M ($1.3M)
2025-11-10	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	97.7K	¥542	+10.5%	¥23M ($146K)
2025-10-06	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	140.0K	¥467	+3.9%	¥6.5B ($42.1M)
2025-10-06	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	470.8K	¥467	+3.9%	¥33M ($210K)
2025-10-06	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	372.4K	¥467	-3.9%	¥57M ($369K)
2025-09-05	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	400.2K	¥415	+16.9%	¥166M ($1.1M)
2025-09-05	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	494.4K	¥415	+16.9%	¥205M ($1.3M)
2025-09-05	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	227	¥415	+16.9%	¥94K ($608)
2023-12-13	BUY	unknown	石川大樹 Ishikawa Daiki	strategic	1.3M	¥217	+123.5%	¥30M ($195K)
2023-12-13	SELL	unknown	石川大樹 Ishikawa Daiki	strategic	1.3M	¥217	-123.5%	¥30M ($195K)
2023-12-13	BUY	unknown	石川大樹 Ishikawa Daiki	strategic	1.3M	¥217	+123.5%	¥30M ($195K)
2023-10-04	BUY	unknown	石川大樹 Ishikawa Daiki	strategic	1.4M	¥220	+120.5%	¥316M ($2.0M)
2023-10-04	BUY	unknown	石川大樹 Ishikawa Daiki	strategic	1.4M	¥220	+120.5%	¥316M ($2.0M)
2021-11-17	BUY	unknown	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	31.4K	¥379	+28.0%	¥12M ($77K)
2021-11-17	SELL	unknown	株式会社UH Partners 2 UH Partners 2, Inc.	unknown	0	¥379	-28.0%	¥12M ($80K)
2021-11-17	SELL	unknown	光通信株式会社 Hikari Tsushin K.K.	unknown	0	¥379	-28.0%	¥5M ($34K)
2021-11-16	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	31.4K	¥436	+11.2%	¥14M ($88K)
2021-11-16	SELL	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	32.3K	¥436	-11.2%	¥438M ($2.8M)
2021-11-16	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.4M	¥436	+11.2%	¥603M ($3.9M)
2021-10-12	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	1.0M	¥238	+103.8%	¥31M ($200K)
2021-10-12	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.4M	¥238	+103.8%	¥24M ($155K)
2021-10-08	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.3M	¥248	+95.6%	¥318M ($2.1M)
2021-10-08	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	907.4K	¥248	+95.6%	¥116M ($747K)
2021-10-06	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.3M	¥231	+110.0%	¥296M ($1.9M)
2021-10-06	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	440.1K	¥231	+110.0%	¥102M ($656K)
2021-10-05	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	1.3M	¥237	+104.6%	¥304M ($2.0M)
2021-06-11	SELL	unknown	石川理香 Rila Ishikawa	strategic	1.3M	¥216	-124.5%	¥34M ($221K)

Frequently asked questions

Who has been buying Rikei Corporation stock?: 8 distinct investors have filed 12 disclosed large-shareholding filings in Rikei Corporation (8226), most recently on 2026-01-21. 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 Rikei Corporation have?: Rikei Corporation has 12 buy-side and 9 sell-side disclosures on record, covering ¥1.1B ($7.1M) in total reported value, spanning 2021-06-11 to 2026-01-21.
Where does StockDrifts get Rikei 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 Rikei Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.