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

6 distinct investors have filed 9 disclosed large-shareholding filings in Amifa Co.,Ltd. (7800), most recently on 2026-02-03. 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 Amifa Co.,Ltd. have?

Amifa Co.,Ltd. has 9 buy-side and 4 sell-side disclosures on record, covering ¥1.4B ($9.1M) in total reported value, spanning 2022-08-18 to 2026-02-03.

Where does StockDrifts get Amifa 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.

Amifa Co.,Ltd. 7800

Company

株式会社アミファAmifa Co.,Ltd.

Investors

Buys

Total Value

¥1.4B ($9.1M)

Avg Return

+114.72%

Last Filing

2026-02-03

Amifa Co.,Ltd. (7800) has 9 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥1.4B ($9.1M) in reported transaction value. The earliest filing StockDrifts holds for Amifa Co.,Ltd. is dated 2022-08-18; the most recent is 2026-02-03. 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 +114.72%, 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
2026-06-15	BUY	unknown	公益財団法人アミファ・デザイン・アート振興財団 Amifa Design Art Foundation	other	200.0K	¥851	+9.2%	¥170M ($1.1M)
2026-02-03	BUY	unknown	株式会社ウィステリアウェル	activist	990.0K	¥687	-103.1%	¥1.4B ($8.9M)
2026-02-03	BUY	unknown	藤井愉三	activist	28.4K	¥687	-103.1%	¥40M ($256K)
2026-01-28	BUY	unknown	公益財団法人アミファ・デザイン・アート振興財団 Amifa Design Art Promotion Foundation	other	200.0K	¥684	+104.0%	¥137M ($883K)
2025-03-10	BUY	unknown	株式会社ウィステリアウェル Wisteria Well Co., Ltd.	activist	990.0K	¥600	+132.5%	¥594M ($3.8M)
2025-03-10	BUY	unknown	藤井愉三 Yuzo Fujii	activist	28.4K	¥600	+132.5%	¥17M ($110K)
2023-11-30	BUY	negotiated	藤井俊行 Toshiyuki Fujii	activist	25.4K	¥631	+121.1%	¥16M ($103K)
2023-11-30	SELL	negotiated	レイクラム合同会社 Lakerum LLC	activist	0	¥631	-121.1%	¥966K ($6K)
2023-10-17	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	153.0K	¥652	+114.0%	¥100M ($644K)
2023-10-17	BUY	negotiated	藤井俊行 Toshiyuki Fujii	activist	25.4K	¥652	+114.0%	¥17M ($107K)
2023-10-17	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	153.0K	¥652	+114.0%	¥100M ($644K)
2023-10-17	BUY	negotiated	藤井俊行 Toshiyuki Fujii	activist	25.4K	¥652	+114.0%	¥17M ($107K)
2023-10-13	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	153.0K	¥647	+115.6%	¥97M ($629K)
2023-10-13	BUY	negotiated	藤井俊行 Toshiyuki Fujii	activist	25.4K	¥647	+115.6%	¥16M ($106K)
2023-10-13	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	153.0K	¥647	+115.6%	¥97M ($629K)
2023-10-13	BUY	negotiated	藤井俊行 Toshiyuki Fujii	activist	25.4K	¥647	+115.6%	¥16M ($106K)
2023-09-07	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	75.6K	¥672	-107.6%	¥70M ($452K)
2023-08-31	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	243.0K	¥658	+112.0%	¥157M ($1.0M)
2023-08-31	BUY	negotiated	藤井俊行 TOSHIYUKI FUJII	activist	25.4K	¥658	+112.0%	¥17M ($108K)
2023-08-25	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	243.0K	¥646	+115.9%	¥154M ($996K)
2023-08-25	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	243.0K	¥646	+115.9%	¥154M ($996K)
2023-08-25	BUY	negotiated	藤井俊行 TOSHIYUKI FUJII	activist	25.4K	¥646	+115.9%	¥16M ($106K)
2023-08-25	BUY	negotiated	藤井俊行 TOSHIYUKI FUJII	activist	25.4K	¥646	+115.9%	¥16M ($106K)
2023-08-16	BUY	unknown	ウィステリア合同会社 Wisteria LLC	activist	990.0K	¥676	+106.4%	¥669M ($4.3M)
2023-08-16	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	403.0K	¥676	+106.4%	¥272M ($1.8M)
2023-08-16	BUY	unknown	ウィステリア合同会社 Wisteria LLC	activist	990.0K	¥676	+106.4%	¥669M ($4.3M)
2023-08-16	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	403.0K	¥676	+106.4%	¥272M ($1.8M)
2023-08-16	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	403.0K	¥676	+106.4%	¥272M ($1.8M)
2023-08-16	BUY	unknown	ウィステリア合同会社 Wisteria LLC	activist	990.0K	¥676	+106.4%	¥669M ($4.3M)
2023-08-16	BUY	unknown	藤井愉三 YUZO FUJII	activist	28.4K	¥676	+106.4%	¥19M ($124K)
2023-08-16	BUY	negotiated	藤井俊行 TOSHIYUKI FUJII	activist	25.4K	¥676	+106.4%	¥17M ($111K)
2023-08-16	BUY	negotiated	藤井俊行 TOSHIYUKI FUJII	activist	25.4K	¥676	+106.4%	¥17M ($111K)
2023-08-16	BUY	unknown	藤井愉三 YUZO FUJII	activist	28.4K	¥676	+106.4%	¥19M ($124K)
2023-08-16	BUY	negotiated	藤井俊行 TOSHIYUKI FUJII	activist	25.4K	¥676	+106.4%	¥17M ($111K)
2023-08-16	BUY	unknown	藤井愉三 YUZO FUJII	activist	28.4K	¥676	+106.4%	¥19M ($124K)
2023-05-17	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	403.0K	¥633	+120.4%	¥251M ($1.6M)
2023-05-17	BUY	negotiated	レイクラム合同会社 Lakerum LLC	activist	403.0K	¥633	+120.4%	¥251M ($1.6M)
2023-05-17	BUY	negotiated	藤井俊行 TOSHIYUKI FUJII	activist	25.4K	¥633	+120.4%	¥16M ($104K)
2023-05-17	BUY	negotiated	藤井俊行 TOSHIYUKI FUJII	activist	25.4K	¥633	+120.4%	¥16M ($104K)
2022-09-07	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	180.0K	¥656	+112.7%	¥118M ($762K)
2022-08-18	SELL	negotiated	レイクラム合同会社 Lakerum LLC	activist	643.0K	¥655	-113.0%	¥1M ($8K)
2022-08-18	SELL	unknown	ウィステリア合同会社 Wisteria LLC	activist	990.0K	¥655	-113.0%	¥2M ($14K)
2022-08-18	BUY	unknown	藤井愉三 YUZO FUJII	activist	28.4K	¥655	+113.0%	¥19M ($120K)
2022-08-18	BUY	negotiated	藤井俊行 TOSHIYUKI FUJII	activist	25.4K	¥655	+113.0%	¥17M ($107K)

Frequently asked questions

Who has been buying Amifa Co.,Ltd. stock?: 6 distinct investors have filed 9 disclosed large-shareholding filings in Amifa Co.,Ltd. (7800), most recently on 2026-02-03. 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 Amifa Co.,Ltd. have?: Amifa Co.,Ltd. has 9 buy-side and 4 sell-side disclosures on record, covering ¥1.4B ($9.1M) in total reported value, spanning 2022-08-18 to 2026-02-03.
Where does StockDrifts get Amifa 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 Amifa Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.