Who has been buying Airtech Japan, Ltd. stock?

5 distinct investors have filed 13 disclosed large-shareholding filings in Airtech Japan, Ltd. (6291), most recently on 2024-12-02. 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 Airtech Japan, Ltd. have?

Airtech Japan, Ltd. has 13 buy-side and 17 sell-side disclosures on record, covering ¥3.2B ($20.4M) in total reported value, spanning 2021-10-22 to 2024-12-02.

Where does StockDrifts get Airtech Japan, 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.

Airtech Japan, Ltd. 6291

Company

日本エアーテック株式会社Airtech Japan, Ltd.

Investors

Buys

Total Value

¥3.2B ($20.4M)

Avg Return

+10.56%

Last Filing

2024-12-02

Airtech Japan, Ltd. (6291) has 13 disclosed large-shareholding filings and 17 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥3.2B ($20.4M) in reported transaction value. The earliest filing StockDrifts holds for Airtech Japan, Ltd. is dated 2021-10-22; the most recent is 2024-12-02. 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 +10.56%, 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
2026-07-17	BUY	unknown	エアーテックアシスト株式会社 AIRTECH ASSIST Co., Ltd	strategic	1.6M	¥1,255	+8.8%	¥2.0B ($12.9M)
2026-07-09	BUY	Market Buy	近藤和美	strategic	44.1K	¥1,272	+5.6%	¥3M ($17K)
2026-07-09	BUY	unknown	近藤芳史	strategic	81.9K	¥1,272	+5.6%	¥104M ($672K)
2026-07-09	BUY	Market Buy	近藤芳世	strategic	275.1K	¥1,272	+5.6%	¥4M ($26K)
2026-07-09	BUY	Market Buy	ケンブリッジフィルターコーポレーション株式会社	strategic	239.3K	¥1,272	+5.6%	¥137M ($882K)
2026-05-22	BUY	unknown	近藤和美	strategic	42.1K	¥1,217	+6.8%	¥51M ($331K)
2026-05-22	BUY	unknown	近藤芳史	strategic	81.9K	¥1,217	+6.8%	¥100M ($643K)
2026-05-22	BUY	unknown	近藤芳世	strategic	272.1K	¥1,217	+6.8%	¥331M ($2.1M)
2026-05-22	BUY	unknown	ケンブリッジフィルターコーポレーション株式会社	strategic	131.3K	¥1,217	+6.8%	¥160M ($1.0M)
2026-05-22	BUY	unknown	近藤和美	strategic	42.1K	¥1,217	+6.8%	¥51M ($331K)
2026-05-22	BUY	unknown	近藤芳史	strategic	81.9K	¥1,217	+6.8%	¥100M ($643K)
2026-05-22	BUY	unknown	近藤芳世	strategic	272.1K	¥1,217	+6.8%	¥331M ($2.1M)
2026-05-22	BUY	unknown	ケンブリッジフィルターコーポレーション株式会社	strategic	131.3K	¥1,217	+6.8%	¥160M ($1.0M)
2024-12-02	SELL	unknown	平沢紘介 Hirosuke Hirasawa	strategic	0	¥1,229	-2.4%	¥1.4B ($9.2M)
2024-12-02	SELL	unknown	平沢紘介 Hirosuke Hirasawa	strategic	0	¥1,229	-2.4%	¥1.4B ($9.2M)
2024-12-02	SELL	unknown	エアーテックアシスト株式会社 Airtech Assist	strategic	1.6M	¥1,229	-2.4%	¥381M ($2.5M)
2024-12-02	SELL	unknown	エアーテックアシスト株式会社 Airtech Assist	strategic	1.6M	¥1,229	-2.4%	¥381M ($2.5M)
2023-10-18	BUY	unknown	平沢紘介 Hirosuke Hirasawa	strategic	12.0K	¥1,336	-5.8%	¥1.4B ($8.9M)
2023-10-18	BUY	unknown	平沢紘介 Hirosuke Hirasawa	strategic	12.0K	¥1,336	-5.8%	¥1.4B ($8.9M)
2023-10-18	SELL	unknown	エアーテックアシスト株式会社 Airtech Assist	strategic	1.9M	¥1,336	+5.8%	¥11M ($72K)
2023-10-18	SELL	unknown	エアーテックアシスト株式会社 Airtech Assist	strategic	1.9M	¥1,336	+5.8%	¥11M ($72K)
2023-01-11	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	414.1K	¥1,057	-19.0%	¥30M ($193K)
2023-01-11	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.3K	¥1,057	+19.0%	¥218M ($1.4M)
2023-01-11	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	70.6K	¥1,057	+19.0%	¥60M ($386K)
2022-05-11	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	441.5K	¥1,032	-21.9%	¥42M ($271K)
2022-05-11	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	107.5K	¥1,032	+21.9%	¥91M ($585K)
2022-05-11	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	13.8K	¥1,032	-21.9%	¥21M ($132K)
2022-02-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	481.3K	¥1,014	+24.1%	¥63M ($403K)
2022-02-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	20.1K	¥1,014	-24.1%	¥60M ($390K)
2022-02-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	33.8K	¥1,014	-24.1%	¥21M ($137K)
2022-01-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	419.7K	¥1,067	+17.9%	¥6M ($36K)
2022-01-21	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	78.9K	¥1,067	+17.9%	¥25M ($158K)
2022-01-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	54.0K	¥1,067	-17.9%	¥2M ($14K)
2022-01-11	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	414.8K	¥1,137	-10.6%	¥65M ($422K)
2022-01-11	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	56.7K	¥1,137	+10.6%	¥7M ($46K)
2022-01-11	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	56.2K	¥1,137	+10.6%	¥64M ($414K)
2022-01-06	SELL	unknown	平沢紘介 Hirosuke Hirasawa	strategic	122.5K	¥1,132	-11.1%	¥173M ($1.1M)
2022-01-06	SELL	unknown	平沢紘介 Hirosuke Hirasawa	strategic	122.5K	¥1,132	-11.1%	¥173M ($1.1M)
2022-01-06	SELL	unknown	エアーテックアシスト株式会社 Airtech Assist	strategic	1.9M	¥1,132	-11.1%	¥27M ($176K)
2022-01-06	SELL	unknown	エアーテックアシスト株式会社 Airtech Assist	strategic	1.9M	¥1,132	-11.1%	¥27M ($176K)
2021-10-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	472.6K	¥1,226	+2.6%	¥579M ($3.7M)
2021-10-22	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	50.4K	¥1,226	+2.6%	¥62M ($399K)
2021-10-22	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	400	¥1,226	+2.6%	¥490K ($3K)

Frequently asked questions

Who has been buying Airtech Japan, Ltd. stock?: 5 distinct investors have filed 13 disclosed large-shareholding filings in Airtech Japan, Ltd. (6291), most recently on 2024-12-02. 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 Airtech Japan, Ltd. have?: Airtech Japan, Ltd. has 13 buy-side and 17 sell-side disclosures on record, covering ¥3.2B ($20.4M) in total reported value, spanning 2021-10-22 to 2024-12-02.
Where does StockDrifts get Airtech Japan, 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 Airtech Japan, Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.