Who has been buying Ultrafabrics Holdings Co.,Ltd. stock?

9 distinct investors have filed 26 disclosed large-shareholding filings in Ultrafabrics Holdings Co.,Ltd. (4235), most recently on 2025-02-17. 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 Ultrafabrics Holdings Co.,Ltd. have?

Ultrafabrics Holdings Co.,Ltd. has 26 buy-side and 15 sell-side disclosures on record, covering ¥35.0B ($225.6M) in total reported value, spanning 2021-05-20 to 2025-02-17.

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.

Ultrafabrics Holdings Co.,Ltd. 4235

Company

ウルトラファブリックス・ホールディングス株式会社Ultrafabrics Holdings Co.,Ltd.

Investors

Buys

Total Value

¥35.0B ($225.6M)

Avg Return

-45.29%

Last Filing

2025-02-17

Ultrafabrics Holdings Co.,Ltd. (4235) has 26 disclosed large-shareholding filings and 15 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥35.0B ($225.6M) in reported transaction value. The earliest filing StockDrifts holds for Ultrafabrics Holdings Co.,Ltd. is dated 2021-05-20; the most recent is 2025-02-17. Across these filings the average return since disclosure is -45.29%, 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
2026-05-26	BUY	Market Buy	ラッセルDプリマック	passive	133.4K	¥673	+1.0%	¥43M ($278K)
2026-05-26	BUY	Market Buy	クレーアンドリューローゼンバーグ Clay Andrew Rosenberg	activist	2.3M	¥673	+1.0%	¥423M ($2.7M)
2026-05-26	BUY	Market Buy	アンドレアフリンク Andrea Flink	passive	234.6K	¥673	+1.0%	¥71M ($457K)
2026-05-26	BUY	Market Buy	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	1.4M	¥673	+1.0%	¥170M ($1.1M)
2025-02-17	BUY	Market Buy	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	1.1M	¥880	-22.7%	¥94M ($605K)
2025-02-17	BUY	Market Buy	ラッセルDプリマック Russell D Primack	passive	66.7K	¥880	-22.7%	¥6M ($38K)
2024-01-22	SELL	unknown	フィデリティ投信株式会社 FIL Investments (Japan) Limited	other	713.5K	¥1,191	+42.9%	¥218M ($1.4M)
2023-12-22	SELL	unknown	フィデリティ投信株式会社 FIL Investments (Japan) Limited	other	896.6K	¥1,170	+41.9%	¥329M ($2.1M)
2023-11-22	SELL	unknown	フィデリティ投信株式会社 FIL Investments (Japan) Limited	other	1.2M	¥1,610	+57.8%	¥420M ($2.7M)
2023-09-07	BUY	Market Buy	フィデリティ投信株式会社 FIL Investments (Japan) Limited	other	1.4M	¥1,626	-58.2%	¥338M ($2.2M)
2023-08-22	BUY	Market Buy	フィデリティ投信株式会社 FIL Investments (Japan) Limited	other	1.2M	¥1,758	-61.3%	¥565M ($3.6M)
2023-07-24	BUY	unknown	フィデリティ投信株式会社 FIL Investments (Japan) Limited	other	909.1K	¥2,289	-70.3%	¥2.1B ($13.4M)
2023-06-22	BUY	negotiated	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	1.1M	¥2,205	-69.2%	¥2.3B ($15.1M)
2023-06-22	BUY	negotiated	クレーアンドリューローゼンバーグ Clay Andrew Rosenberg	activist	1.5M	¥2,205	-69.2%	¥3.3B ($21.6M)
2023-06-22	BUY	negotiated	ラッセルDプリマック Russell D Primack	passive	66.7K	¥2,205	-	-
2023-06-22	BUY	negotiated	アンドレアフリンク Andrea Flink	passive	117.3K	¥2,205	-	-
2023-05-26	BUY	negotiated	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	1.3M	¥2,007	-66.1%	¥2.5B ($16.3M)
2023-05-26	BUY	negotiated	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	1.3M	¥2,007	-66.1%	¥2.5B ($16.4M)
2023-05-26	SELL	negotiated	ラッセルDプリマック Russell D Primack	passive	66.7K	¥2,007	+66.1%	¥124M ($798K)
2023-05-26	SELL	negotiated	ラッセルDプリマック Russell D Primack	passive	66.7K	¥2,007	+66.1%	¥128M ($826K)
2023-05-25	BUY	negotiated	クレーアンドリューローゼンバーグ Clay Andrew Rosenberg	activist	1.7M	¥2,131	-68.1%	¥3.6B ($23.4M)
2023-05-25	BUY	negotiated	クレーアンドリューローゼンバーグ Clay Andrew Rosenberg	activist	1.7M	¥2,131	-68.1%	¥3.7B ($23.6M)
2023-05-25	BUY	negotiated	クレーアンドリューローゼンバーグ Clay Andrew Rosenberg	activist	1.7M	¥2,131	-68.1%	¥3.7B ($23.6M)
2023-05-25	SELL	negotiated	アンドレアフリンク Andrea Flink	passive	117.3K	¥2,131	+68.1%	¥235M ($1.5M)
2023-05-25	SELL	negotiated	アンドレアフリンク Andrea Flink	passive	117.3K	¥2,131	+68.1%	¥236M ($1.5M)
2023-05-25	SELL	negotiated	アンドレアフリンク Andrea Flink	passive	117.3K	¥2,131	+68.1%	¥235M ($1.5M)
2022-09-21	BUY	negotiated	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	887.7K	¥2,357.5	-71.2%	¥2.1B ($13.3M)
2022-09-21	BUY	negotiated	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	837.7K	¥2,357.5	-71.2%	¥2.0B ($12.6M)
2022-09-21	BUY	negotiated	クレーアンドリューローゼンバーグ Clay Andrew Rosenberg	activist	1.3M	¥2,357.5	-71.2%	¥3.1B ($20.1M)
2022-09-21	SELL	negotiated	アンドレアフリンク Andrea Flink	passive	117.3K	¥2,357.5	+71.2%	¥11M ($74K)
2022-09-21	BUY	negotiated	ラッセルDプリマック Russell D Primack	passive	66.7K	¥2,357.5	-	-
2022-09-21	BUY	negotiated	ラッセルDプリマック Russell D Primack	passive	66.7K	¥2,357.5	-	-
2022-09-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	275.0K	¥2,675	-	-
2022-09-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	7.2K	¥2,675	+74.6%	¥598M ($3.9M)
2022-07-19	SELL	Market Buy	五味大輔 Gomi Daisuke	passive	547.0K	¥1,512.5	+55.0%	¥12M ($75K)
2022-06-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	275.0K	¥1,311	-48.1%	¥361M ($2.3M)
2022-06-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	230.3K	¥1,311	-48.1%	¥302M ($1.9M)
2022-01-12	BUY	negotiated	ラッセルDプリマック Russell D Primack	passive	66.7K	¥1,093	-	¥73M ($470K)
2022-01-12	BUY	negotiated	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	1.1M	¥1,093	-37.8%	¥1.1B ($7.3M)
2022-01-12	BUY	negotiated	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	1.0M	¥1,093	-37.8%	¥1.1B ($7.0M)
2022-01-12	BUY	negotiated	バーバラダニエルボエカープリマック Barbara Danielle Boecker Primack	activist	1.0M	¥1,093	-37.8%	¥1.1B ($7.0M)
2022-01-12	BUY	negotiated	ラッセルDプリマック Russell D Primack	passive	66.7K	¥1,093	-	¥73M ($470K)
2022-01-12	BUY	negotiated	ラッセルDプリマック Russell D Primack	passive	66.7K	¥1,093	-	¥73M ($470K)
2022-01-11	SELL	negotiated	バーバラダニエルボエカープリマック(Barbara Danielle Boecker Primack) Barbara Danielle Boecker Primack	activist	1.1M	¥981	+30.7%	¥172M ($1.1M)
2021-12-23	BUY	negotiated	アンドレアフリンク Andrea Flink	passive	117.3K	¥840	-	-
2021-12-23	BUY	negotiated	クレーアンドリューローゼンバーグ Clay Andrew Rosenberg	activist	1.5M	¥840	-	-
2021-12-23	BUY	negotiated	クレーアンドリューローゼンバーグ Clay Andrew Rosenberg	activist	1.5M	¥840	-	-
2021-12-23	BUY	negotiated	アンドレアフリンク Andrea Flink	passive	117.3K	¥840	-	-
2021-06-08	BUY	negotiated	アンドレアフリンク Andrea Flink	passive	117.3K	¥731.5	-7.0%	¥3M ($16K)
2021-06-08	SELL	Market Buy	アンドレアフリンク Andrea Flink	passive	117.3K	¥731.5	+7.0%	¥2M ($13K)

Showing the 50 most recent of 57 filings.

Frequently asked questions

Who has been buying Ultrafabrics Holdings Co.,Ltd. stock?: 9 distinct investors have filed 26 disclosed large-shareholding filings in Ultrafabrics Holdings Co.,Ltd. (4235), most recently on 2025-02-17. 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 Ultrafabrics Holdings Co.,Ltd. have?: Ultrafabrics Holdings Co.,Ltd. has 26 buy-side and 15 sell-side disclosures on record, covering ¥35.0B ($225.6M) in total reported value, spanning 2021-05-20 to 2025-02-17.
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.