Who has been buying Okuwa Co., Ltd. stock?

14 distinct investors have filed 15 disclosed large-shareholding filings in Okuwa Co., Ltd. (8217), most recently on 2025-09-19. 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 Okuwa Co., Ltd. have?

Okuwa Co., Ltd. has 15 buy-side and 20 sell-side disclosures on record, covering ¥1.8B ($11.7M) in total reported value, spanning 2021-11-19 to 2025-09-19.

Where does StockDrifts get Okuwa Co., Ltd. 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.

Okuwa Co., Ltd. 8217

Company

株式会社オークワOkuwa Co., Ltd.

Investors

Buys

Total Value

¥1.8B ($11.7M)

Avg Return

-2.95%

Last Filing

2025-09-19

Okuwa Co., Ltd. (8217) has 15 disclosed large-shareholding filings and 20 disclosed disposals on record, filed by 14 distinct investors. Together those filings cover ¥1.8B ($11.7M) in reported transaction value. The earliest filing StockDrifts holds for Okuwa Co., Ltd. is dated 2021-11-19; the most recent is 2025-09-19. 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 -2.95%, 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
2026-05-21	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社	other	505.8K	¥779	+0.8%	¥42M ($274K)
2026-05-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	548.0K	¥779	-0.8%	¥127M ($822K)
2026-05-21	BUY	negotiated	三井住友信託銀行株式会社	strategic	1.5M	¥779	+0.8%	¥1.1B ($7.3M)
2025-09-19	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.5M	¥941	+14.6%	¥142M ($917K)
2025-09-19	BUY	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	712.9K	¥941	-14.6%	¥12M ($76K)
2025-09-19	SELL	negotiated	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	452.1K	¥941	+14.6%	¥39M ($255K)
2025-03-06	BUY	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	493.3K	¥801	+0.4%	¥27M ($173K)
2025-03-06	BUY	Market Buy	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	701.4K	¥801	+0.4%	¥47M ($303K)
2025-03-06	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.6M	¥801	+0.4%	¥94M ($607K)
2025-02-10	SELL	negotiated	株式会社オー・ホールディングス O Holdings Co., Ltd.	activist	223.6K	¥778	-3.3%	¥246M ($1.6M)
2025-02-10	SELL	negotiated	株式会社オー・キャピタル O Capital Co., Ltd.	activist	611.8K	¥778	-3.3%	¥123M ($795K)
2025-02-10	BUY	negotiated	大桑妙子 Taeko Okuwa	activist	40.0K	¥778	+3.3%	¥31M ($201K)
2025-02-10	BUY	negotiated	大桑啓嗣 Keiji Okuwa	activist	1.2M	¥778	+3.3%	¥948M ($6.1M)
2025-02-10	SELL	negotiated	株式会社オー・ホールディングス O Holdings Co., Ltd.	activist	223.6K	¥778	-3.3%	¥246M ($1.6M)
2025-02-10	SELL	negotiated	株式会社オー・キャピタル O Capital Co., Ltd.	activist	611.8K	¥778	-3.3%	¥123M ($795K)
2025-02-10	BUY	negotiated	大桑妙子 Taeko Okuwa	activist	40.0K	¥778	+3.3%	¥31M ($201K)
2025-02-10	BUY	negotiated	大桑啓嗣 Keitsugu Okuwa	activist	1.2M	¥778	+3.3%	¥948M ($6.1M)
2025-02-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	496.4K	¥791	+1.6%	¥4M ($23K)
2025-02-06	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	692.4K	¥791	-1.6%	¥426M ($2.7M)
2025-02-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.6M	¥791	+1.6%	¥1.3B ($8.2M)
2025-01-23	BUY	negotiated	柴田佳恵 Yoshie Shibata	activist	75.0K	¥771	+4.3%	¥58M ($373K)
2025-01-23	BUY	negotiated	大桑静恵 Shizue Okuwa	strategic	73.0K	¥771	+4.3%	¥56M ($363K)
2025-01-23	SELL	negotiated	株式会社オー・ホールディングス O Holdings Co., Ltd.	activist	223.6K	¥771	-4.3%	¥600M ($3.9M)
2025-01-23	SELL	negotiated	株式会社オー・キャピタル O Capital Co., Ltd.	activist	611.8K	¥771	-4.3%	¥146M ($945K)
2025-01-23	BUY	negotiated	大桑妙子 Taeko Okuwa	activist	40.0K	¥771	+4.3%	¥31M ($199K)
2025-01-23	BUY	negotiated	柴田佳恵 Yoshie Shibata	activist	75.0K	¥771	+4.3%	¥58M ($373K)
2025-01-23	BUY	negotiated	大桑静恵 Shizue Okuwa	strategic	73.0K	¥771	+4.3%	¥56M ($363K)
2025-01-23	SELL	negotiated	株式会社オー・ホールディングス O Holdings Co., Ltd.	activist	539.5K	¥771	-4.3%	¥356M ($2.3M)
2025-01-23	SELL	negotiated	株式会社オー・キャピタル O Capital Co., Ltd.	activist	769.8K	¥771	-4.3%	¥24M ($158K)
2025-01-23	BUY	negotiated	大桑妙子 Taeko Okuwa	activist	40.0K	¥771	+4.3%	¥31M ($199K)
2025-01-23	BUY	negotiated	大桑啓嗣 Keitsugu Okuwa	activist	1.2M	¥771	+4.3%	¥286M ($1.8M)
2025-01-23	BUY	negotiated	大桑啓嗣 Keitsugu Okuwa	activist	1.2M	¥771	+4.3%	¥286M ($1.8M)
2025-01-21	BUY	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	492.8K	¥774	+3.9%	¥381M ($2.5M)
2025-01-21	BUY	Market Buy	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	1.2M	¥774	+3.9%	¥417M ($2.7M)
2025-01-21	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.6M	¥774	+3.9%	¥1.2B ($8.0M)
2025-01-09	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	491.8K	¥836	-3.8%	¥49M ($317K)
2025-01-09	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	690.6K	¥836	+3.8%	¥64M ($415K)
2025-01-09	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.6M	¥836	+3.8%	¥238M ($1.5M)
2024-03-22	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	767.2K	¥844	+4.7%	¥187M ($1.2M)
2024-03-22	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	436.2K	¥844	+4.7%	¥27M ($172K)
2024-03-22	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.9M	¥844	-4.7%	¥1.6B ($10.3M)
2023-03-06	SELL	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	217.6K	¥857	+6.2%	¥500M ($3.2M)
2023-03-06	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	195.8K	¥857	-6.2%	¥168M ($1.1M)
2023-03-06	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	456.6K	¥857	+6.2%	¥8M ($50K)
2023-03-06	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	945.6K	¥857	-6.2%	¥810M ($5.2M)
2023-02-20	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	800.5K	¥921	-12.7%	¥737M ($4.8M)
2023-02-20	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	196.6K	¥921	-12.7%	¥181M ($1.2M)
2023-02-20	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	467.2K	¥921	+12.7%	¥8M ($54K)
2023-02-20	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	945.6K	¥921	-12.7%	¥871M ($5.6M)
2023-01-19	BUY	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	990.1K	¥875	-8.1%	¥32M ($204K)

Showing the 50 most recent of 60 filings.

Frequently asked questions

Who has been buying Okuwa Co., Ltd. stock?: 14 distinct investors have filed 15 disclosed large-shareholding filings in Okuwa Co., Ltd. (8217), most recently on 2025-09-19. 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 Okuwa Co., Ltd. have?: Okuwa Co., Ltd. has 15 buy-side and 20 sell-side disclosures on record, covering ¥1.8B ($11.7M) in total reported value, spanning 2021-11-19 to 2025-09-19.
Where does StockDrifts get Okuwa Co., Ltd. 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 Okuwa Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.