Who has been buying Alphax Food System Co., Ltd stock?

9 distinct investors have filed 10 disclosed large-shareholding filings in Alphax Food System Co., Ltd (3814), most recently on 2025-09-05. 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 Alphax Food System Co., Ltd have?

Alphax Food System Co., Ltd has 10 buy-side and 25 sell-side disclosures on record, covering ¥1.9B ($12.3M) in total reported value, spanning 2021-03-22 to 2025-09-05.

Where does StockDrifts get Alphax Food System 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.

Alphax Food System Co., Ltd 3814

Company

株式会社アルファクス・フード・システムAlphax Food System Co., Ltd

Investors

Buys

Total Value

¥1.9B ($12.3M)

Avg Return

-79.52%

Last Filing

2025-09-05

Alphax Food System Co., Ltd (3814) has 10 disclosed large-shareholding filings and 25 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥1.9B ($12.3M) in reported transaction value. The earliest filing StockDrifts holds for Alphax Food System Co., Ltd is dated 2021-03-22; the most recent is 2025-09-05. 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 -79.52%, 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
2025-09-05	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	unknown	0	¥159	+0.0%	¥35M ($228K)
2025-01-30	SELL	negotiated	田村由実子 Yumiko Tamura	activist	13.5K	¥358	+55.6%	¥28M ($180K)
2025-01-30	SELL	negotiated	田村由実子 Yumiko Tamura	activist	13.5K	¥358	+55.6%	¥28M ($180K)
2025-01-30	SELL	negotiated	田村由実子 Yumiko Tamura	activist	13.5K	¥358	+55.6%	¥28M ($180K)
2025-01-30	SELL	negotiated	田村隆盛 TAKAMORI TAMURA	activist	1.3M	¥358	+55.6%	¥35M ($226K)
2025-01-30	SELL	negotiated	田村隆盛 TAKAMORI TAMURA	activist	1.3M	¥358	+55.6%	¥35M ($226K)
2025-01-30	SELL	negotiated	田村隆盛 TAKAMORI TAMURA	activist	1.3M	¥358	+55.6%	¥35M ($226K)
2023-07-25	BUY	negotiated	田村隆盛 TAKAMORI TAMURA	activist	1.4M	¥850	-81.3%	¥1.2B ($7.5M)
2023-07-25	BUY	unknown	平川雅之 Masayuki Hirakawa	strategic	114.7K	¥850	-81.3%	¥97M ($629K)
2023-07-25	BUY	negotiated	田村隆盛 TAKAMORI TAMURA	activist	1.4M	¥850	-81.3%	¥1.2B ($7.5M)
2023-07-25	BUY	negotiated	田村由実子 Yumiko Tamura	activist	93.5K	¥850	-81.3%	¥60M ($384K)
2023-07-25	BUY	negotiated	田村由実子 Yumiko Tamura	activist	93.5K	¥850	-81.3%	¥60M ($384K)
2023-07-25	BUY	unknown	株式会社エイチアンドパートナーズ H&PARTNERS Co., Ltd.	strategic	191.2K	¥850	-81.3%	¥163M ($1.0M)
2022-12-22	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	195.5K	¥283	+43.8%	¥14M ($89K)
2022-10-28	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	0	¥425	+62.6%	¥116M ($748K)
2022-10-27	SELL	Market Buy	辛澤 XIN ZE	passive	110.4K	¥418	+62.0%	¥41M ($266K)
2022-09-30	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	272.7K	¥331	+52.0%	¥13M ($83K)
2022-08-30	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	314.6K	¥365	+56.4%	¥17M ($110K)
2022-08-10	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	365.9K	¥366	+56.6%	¥16M ($105K)
2022-08-03	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	414.8K	¥368	+56.8%	¥29M ($185K)
2022-07-15	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	501.4K	¥368	+56.8%	¥11M ($72K)
2022-06-24	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	536.7K	¥371	+57.1%	¥48M ($308K)
2022-05-26	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	687.4K	¥409	+61.1%	¥74M ($480K)
2022-05-26	BUY	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	687.4K	¥409	-61.1%	¥74M ($480K)
2022-05-17	BUY	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	995.0K	¥430	-63.0%	¥189M ($1.2M)
2021-12-07	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	196.6K	¥659	-75.9%	¥130M ($836K)
2021-11-25	SELL	Market Buy	辛澤 XIN ZE	passive	184.4K	¥756	+79.0%	¥26M ($165K)
2021-11-08	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	unknown	0	¥699	+77.3%	¥3M ($20K)
2021-11-08	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	196.6K	¥699	-77.3%	¥136M ($877K)
2021-09-17	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	329.0K	¥748	+78.7%	¥47M ($306K)
2021-07-28	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	399.4K	¥679	+76.6%	¥20M ($128K)
2021-07-12	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	432.7K	¥741	+78.5%	¥12M ($75K)
2021-06-25	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	450.6K	¥791	+79.9%	¥29M ($184K)
2021-05-17	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	492.5K	¥737	+78.4%	¥20M ($128K)
2021-04-12	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	523.8K	¥954	+83.3%	¥15M ($97K)
2021-03-25	BUY	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	542.2K	¥958	-83.4%	¥519M ($3.4M)
2021-03-25	BUY	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	542.2K	¥958	-83.4%	¥519M ($3.4M)
2021-03-22	BUY	Market Buy	辛澤 XIN ZE	passive	204.4K	¥982	-83.8%	¥201M ($1.3M)

Frequently asked questions

Who has been buying Alphax Food System Co., Ltd stock?: 9 distinct investors have filed 10 disclosed large-shareholding filings in Alphax Food System Co., Ltd (3814), most recently on 2025-09-05. 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 Alphax Food System Co., Ltd have?: Alphax Food System Co., Ltd has 10 buy-side and 25 sell-side disclosures on record, covering ¥1.9B ($12.3M) in total reported value, spanning 2021-03-22 to 2025-09-05.
Where does StockDrifts get Alphax Food System 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 Alphax Food System Co., Ltd. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.