Who has been buying Amvis Holdings, Inc. stock?

6 distinct investors have filed 10 disclosed large-shareholding filings in Amvis Holdings, Inc. (7071), most recently on 2026-02-25. 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 Amvis Holdings, Inc. have?

Amvis Holdings, Inc. has 10 buy-side and 23 sell-side disclosures on record, covering ¥17.4B ($112.3M) in total reported value, spanning 2021-03-25 to 2026-02-25.

Where does StockDrifts get Amvis Holdings, 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.

Amvis Holdings, Inc. 7071

Company

株式会社アンビスホールディングスAmvis Holdings, Inc.

Investors

Buys

Total Value

¥17.4B ($112.3M)

Avg Return

-42.96%

Last Filing

2026-02-25

Amvis Holdings, Inc. (7071) has 10 disclosed large-shareholding filings and 23 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥17.4B ($112.3M) in reported transaction value. The earliest filing StockDrifts holds for Amvis Holdings, Inc. is dated 2021-03-25; the most recent is 2026-02-25. 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 -42.96%, 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
2026-08-10	SELL	unknown	株式会社IDEA Capital	other	51.7M	¥390	-1.5%	¥103M ($667K)
2026-08-10	BUY	unknown	柴原慶一	other	9.0M	¥390	+1.5%	¥3.5B ($22.7M)
2026-08-07	BUY	unknown	株式会社IDEA Capital	other	51.7M	¥394	+0.5%	¥20.4B ($131.3M)
2026-08-07	BUY	unknown	柴原慶一	other	9.0M	¥394	+0.5%	¥3.6B ($22.9M)
2026-02-25	BUY	Market Buy	パンテウム・マスター・ファンド・リミテッド Pantheum Master Fund Limited	passive	4.9M	¥499	-18.6%	¥2.0B ($12.9M)
2026-02-25	BUY	Market Buy	パンテウム・パートナーズ・リミテッド Pantheum Partners Limited	passive	0	¥499	-18.6%	-
2026-02-25	BUY	Market Buy	パンテウム・マスター・ファンド・リミテッド Pantheum Master Fund Limited	passive	4.9M	¥499	-18.6%	¥2.0B ($12.9M)
2026-02-25	BUY	Market Buy	パンテウム・パートナーズ・リミテッド Pantheum Partners Limited	passive	0	¥499	-18.6%	-
2026-02-19	BUY	unknown	株式会社IDEA Capital	other	51.7M	¥507	+19.9%	¥21.0B ($135.3M)
2026-02-19	BUY	unknown	柴原慶一	other	8.1M	¥507	+19.9%	¥3.3B ($21.3M)
2026-01-23	BUY	unknown	株式会社IDEA Capital	other	51.7M	¥480	+15.4%	¥21.0B ($135.3M)
2026-01-23	BUY	unknown	柴原慶一	other	8.1M	¥480	+15.4%	¥3.3B ($21.3M)
2025-03-31	BUY	Market Buy	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥460	-11.7%	¥23.8B ($153.3M)
2025-03-31	BUY	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥460	-11.7%	¥23.8B ($153.3M)
2025-03-31	BUY	unknown	柴原慶一 Shibahara Keiichi	other	8.1M	¥460	-11.7%	¥456M ($2.9M)
2025-03-31	BUY	Market Buy	柴原慶一 Shibahara Keiichi	other	8.1M	¥460	-11.7%	¥456M ($2.9M)
2025-02-13	SELL	Market Buy	ポーラー・キャピタル・エル・エル・ピー(Polar Capital LLP) Polar Capital LLP	passive	4.0M	¥742	+45.3%	¥750M ($4.8M)
2024-11-11	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥1,114	+63.5%	¥33M ($212K)
2024-11-11	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥1,114	+63.5%	¥22M ($141K)
2024-11-11	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.1M	¥1,114	-63.5%	¥8.0B ($51.3M)
2024-11-11	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.1M	¥1,114	-63.5%	¥8.0B ($51.3M)
2024-06-05	BUY	acquisition	ポーラー・キャピタル・エル・エル・ピー(Polar Capital LLP) Polar Capital LLP	passive	5.0M	¥2,220	-81.7%	¥11.0B ($71.1M)
2024-05-29	BUY	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥1,994	-79.6%	¥103.0B ($664.6M)
2024-05-29	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.1M	¥1,994	-79.6%	¥14.2B ($91.9M)
2024-05-09	BUY	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥2,183	-81.4%	¥112.8B ($727.6M)
2024-05-09	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.1M	¥2,183	-81.4%	¥15.6B ($100.6M)
2024-04-05	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.1M	¥2,439	-83.3%	¥17.4B ($112.4M)
2024-04-05	BUY	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥2,439	-83.3%	¥126.0B ($812.9M)
2024-03-07	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	4.6M	¥2,313	+82.5%	¥4.9B ($31.5M)
2024-02-22	SELL	unknown	柴原慶一 Shibahara Keiichi	other	7.1M	¥2,471	+83.6%	¥1.8B ($11.7M)
2024-02-22	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥2,471	+83.6%	¥145M ($938K)
2023-08-31	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.9M	¥2,911	-86.0%	¥22.9B ($147.7M)
2023-08-31	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥2,911	+86.0%	¥29M ($184K)
2023-06-19	BUY	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥3,235	-87.5%	¥167.1B ($1.1B)
2023-06-19	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.9M	¥3,235	-87.5%	¥25.4B ($164.1M)
2023-05-22	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	6.7M	¥3,015	-86.5%	¥20.1B ($129.5M)
2023-05-11	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥2,903	+86.0%	¥28M ($183K)
2023-05-11	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.9M	¥2,903	-86.0%	¥22.8B ($147.2M)
2023-04-04	BUY	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥3,150	-87.1%	¥162.7B ($1.0B)
2023-04-04	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.9M	¥3,150	-87.1%	¥24.8B ($159.8M)
2023-03-27	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	51.7M	¥3,045	+86.7%	¥3.0B ($19.6M)
2023-03-27	BUY	unknown	柴原慶一 Shibahara Keiichi	other	7.9M	¥3,045	-86.7%	¥23.9B ($154.5M)
2023-03-23	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	6.7M	¥2,988	+86.4%	¥2.9B ($18.9M)
2023-03-15	SELL	unknown	柴原慶一 Shibahara Keiichi	other	7.9M	¥3,045	+86.7%	¥27.4B ($176.8M)
2023-03-15	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	52.7M	¥3,045	+86.7%	¥3.0B ($19.6M)
2023-03-02	SELL	unknown	柴原慶一 Shibahara Keiichi	other	16.9M	¥3,160	+87.2%	¥31M ($200K)
2023-03-02	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	53.7M	¥3,160	+87.2%	¥62M ($399K)
2022-12-05	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	53.7M	¥3,265	+87.6%	¥96M ($619K)
2022-12-05	SELL	unknown	柴原慶一 Shibahara Keiichi	other	16.9M	¥3,265	+87.6%	¥32M ($206K)
2022-10-21	SELL	unknown	株式会社IDEA Capital IDEA Capital Co., Ltd.	other	53.7M	¥2,436	+83.3%	¥953M ($6.2M)

Showing the 50 most recent of 64 filings.

Frequently asked questions

Who has been buying Amvis Holdings, Inc. stock?: 6 distinct investors have filed 10 disclosed large-shareholding filings in Amvis Holdings, Inc. (7071), most recently on 2026-02-25. 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 Amvis Holdings, Inc. have?: Amvis Holdings, Inc. has 10 buy-side and 23 sell-side disclosures on record, covering ¥17.4B ($112.3M) in total reported value, spanning 2021-03-25 to 2026-02-25.
Where does StockDrifts get Amvis Holdings, 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 Amvis Holdings, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.