Who has been buying f-code Inc. stock?

5 distinct investors have filed 8 disclosed large-shareholding filings in f-code Inc. (9211), most recently on 2026-03-12. 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 f-code Inc. have?

f-code Inc. has 8 buy-side and 14 sell-side disclosures on record, covering ¥4.1B ($26.6M) in total reported value, spanning 2022-01-05 to 2026-03-12.

Where does StockDrifts get f-code Inc. 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.

f-code Inc. 9211

Company

株式会社エフ・コードf-code Inc.

Investors

Buys

Total Value

¥4.1B ($26.6M)

Avg Return

+50.73%

Last Filing

2026-03-12

f-code Inc. (9211) has 8 disclosed large-shareholding filings and 14 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥4.1B ($26.6M) in reported transaction value. The earliest filing StockDrifts holds for f-code Inc. is dated 2022-01-05; the most recent is 2026-03-12. 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 +50.73%, 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
2026-07-10	SELL	unknown	アセンダー・キャピタル・リミテッド(Ascender Capital Limited) Ascender Capital Limited	activist	524.7K	¥1,417	-5.6%	¥189M ($1.2M)
2026-03-12	BUY	unknown	アセンダー・キャピタル・リミテッド(Ascender Capital Limited) Ascender Capital Limited	activist	655.4K	¥1,588	-0.8%	¥1.0B ($6.7M)
2026-03-12	BUY	unknown	アセンダー・キャピタル・リミテッド(Ascender Capital Limited) Ascender Capital Limited	activist	655.4K	¥1,588	-0.8%	¥1.0B ($6.7M)
2025-12-05	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	494.6K	¥1,564	-0.8%	¥227M ($1.5M)
2025-11-05	SELL	unknown	工藤勉 KUDO TSUTOMU	strategic	4.8M	¥1,987	+20.7%	¥30M ($191K)
2025-05-26	SELL	unknown	工藤勉 KUDO TSUTOMU	strategic	4.8M	¥2,100	+24.9%	¥242M ($1.6M)
2024-08-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	624.8K	¥1,032	-52.7%	¥282M ($1.8M)
2024-07-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	898.2K	¥1,255	-25.6%	¥257M ($1.7M)
2024-05-10	SELL	unknown	工藤勉 KUDO TSUTOMU	strategic	4.8M	¥1,612	+2.2%	¥1.7B ($10.7M)
2024-04-26	SELL	unknown	工藤勉 KUDO TSUTOMU	strategic	5.1M	¥1,782	+11.6%	¥77M ($500K)
2024-03-08	SELL	unknown	梅澤康二 UMEZAWA KOJI	strategic	224.4K	¥2,620	+39.9%	¥205M ($1.3M)
2023-09-01	SELL	unknown	工藤勉 KUDO TSUTOMU	strategic	2.6M	¥851.5	-85.1%	¥6M ($40K)
2023-04-21	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	477.8K	¥808.5	+94.9%	¥45M ($290K)
2023-03-23	SELL	unknown	工藤勉 KUDO TSUTOMU	strategic	2.6M	¥980	-60.8%	¥663M ($4.3M)
2023-01-18	SELL	unknown	工藤勉 KUDO TSUTOMU	strategic	2.6M	¥1,101.5	-43.1%	¥33M ($215K)
2023-01-18	SELL	unknown	梅澤康二 UMEZAWA KOJI	strategic	237.0K	¥1,101.5	-43.1%	¥3M ($18K)
2022-12-23	SELL	unknown	工藤勉 KUDO TSUTOMU	strategic	2.6M	¥1,155	-36.5%	¥35M ($226K)
2022-12-22	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	333.7K	¥1,156	+36.3%	¥67M ($433K)
2022-09-26	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	137.8K	¥843.75	+86.8%	¥24M ($153K)
2022-09-26	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	1.4K	¥843.75	-86.8%	¥2M ($10K)
2022-05-11	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	109.6K	¥721.5	+118.4%	¥79M ($510K)
2022-05-11	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.3K	¥721.5	+118.4%	¥2M ($15K)
2022-01-05	BUY	unknown	工藤勉 KUDO TSUTOMU	strategic	1.3M	¥2,077.5	-24.1%	¥2.7B ($17.3M)
2022-01-05	BUY	unknown	梅澤康二 UMEZAWA KOJI	strategic	118.5K	¥2,077.5	-24.1%	¥246M ($1.6M)
2022-01-05	BUY	unknown	工藤勉 KUDO TSUTOMU	strategic	1.3M	¥2,077.5	-24.1%	¥2.7B ($17.3M)
2022-01-05	BUY	unknown	梅澤康二 UMEZAWA KOJI	strategic	118.5K	¥2,077.5	-24.1%	¥246M ($1.6M)

Frequently asked questions

Who has been buying f-code Inc. stock?: 5 distinct investors have filed 8 disclosed large-shareholding filings in f-code Inc. (9211), most recently on 2026-03-12. 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 f-code Inc. have?: f-code Inc. has 8 buy-side and 14 sell-side disclosures on record, covering ¥4.1B ($26.6M) in total reported value, spanning 2022-01-05 to 2026-03-12.
Where does StockDrifts get f-code Inc. 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 f-code Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.