Who has been buying Fuva Brain Limited stock?

7 distinct investors have filed 9 disclosed large-shareholding filings in Fuva Brain Limited (3927), 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 Fuva Brain Limited have?

Fuva Brain Limited has 9 buy-side and 3 sell-side disclosures on record, covering ¥2.7B ($17.3M) in total reported value, spanning 2021-08-30 to 2026-04-16.

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.

Fuva Brain Limited 3927

Company

株式会社フーバーブレインFuva Brain Limited

Investors

Buys

Total Value

¥2.7B ($17.3M)

Avg Return

+3.72%

Last Filing

2026-04-16

Fuva Brain Limited (3927) has 9 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥2.7B ($17.3M) in reported transaction value. The earliest filing StockDrifts holds for Fuva Brain Limited is dated 2021-08-30; the most recent is 2026-04-16. Across these filings the average return since disclosure is +3.72%, 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
2026-04-16	BUY	Market Buy	シルバーケイプ・インベストメンツ・リミテッド(SilverCape Investments Limited) SilverCape Investments Limited	activist	504.3K	¥1,065	-15.4%	¥109M ($701K)
2026-03-27	BUY	Market Buy	シルバーケイプ・インベストメンツ・リミテッド(SilverCape Investments Limited) SilverCape Investments Limited	activist	402.5K	¥1,269	-29.0%	¥148M ($954K)
2026-03-23	BUY	Market Buy	シルバーケイプ・インベストメンツ・リミテッド(SilverCape Investments Limited) SilverCape Investments Limited	activist	285.8K	¥1,199	-24.9%	¥343M ($2.2M)
2026-02-02	BUY	unknown	輿水英行	activist	275.0K	¥922	-2.3%	¥26M ($170K)
2026-02-02	SELL	unknown	いずみキャピタル株式会社	activist	56.4K	¥922	+2.3%	¥146M ($940K)
2025-12-08	BUY	Market Buy	いずみキャピタル株式会社	activist	214.6K	¥754	-	-
2025-12-08	BUY	Market Buy	輿水英行	activist	245.0K	¥754	+19.5%	¥114M ($733K)
2025-07-08	BUY	acquisition	五十畑輝夫 Teruo Ikahata	passive	305.7K	¥867	+3.9%	¥265M ($1.7M)
2025-06-16	BUY	Market Buy	モダンパス合同会社 Modern Path LLC.	passive	1.3M	¥1,010	-10.8%	¥1.3B ($8.5M)
2021-11-26	BUY	unknown	永野祐司 Yuji Nagano	strategic	177.0K	¥1,343	-32.9%	¥235M ($1.5M)
2021-11-26	SELL	unknown	永野洋子 Yoko Nagano	strategic	20.0K	¥1,343	+32.9%	¥36M ($233K)
2021-10-18	BUY	unknown	いずみキャピタル株式会社 Izumi Capital Co., Ltd.	activist	214.6K	¥987	-8.7%	¥208M ($1.3M)
2021-10-18	SELL	unknown	輿水英行 Hideyuki Koshimizu	activist	85.0K	¥987	+8.7%	¥18M ($118K)
2021-08-30	BUY	unknown	いずみキャピタル株式会社 Izumi Capital Co., Ltd.	activist	297.8K	¥855	-	-
2021-08-30	BUY	unknown	輿水英行 Hideyuki Koshimizu	activist	85.0K	¥855	-	¥73M ($469K)

Frequently asked questions

Who has been buying Fuva Brain Limited stock?: 7 distinct investors have filed 9 disclosed large-shareholding filings in Fuva Brain Limited (3927), 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 Fuva Brain Limited have?: Fuva Brain Limited has 9 buy-side and 3 sell-side disclosures on record, covering ¥2.7B ($17.3M) in total reported value, spanning 2021-08-30 to 2026-04-16.
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.