Who has been buying Aica Kogyo Company, Limited stock?

13 distinct investors have filed 33 disclosed large-shareholding filings in Aica Kogyo Company, Limited (4206), most recently on 2026-05-12. 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 Aica Kogyo Company, Limited have?

Aica Kogyo Company, Limited has 33 buy-side and 22 sell-side disclosures on record, covering ¥75.0B ($484.1M) in total reported value, spanning 2022-05-09 to 2026-05-12.

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.

Aica Kogyo Company, Limited 4206

Company

アイカ工業株式会社Aica Kogyo Company, Limited

Investors

Buys

Total Value

¥75.0B ($484.1M)

Avg Return

+8.61%

Last Filing

2026-05-12

Aica Kogyo Company, Limited (4206) has 33 disclosed large-shareholding filings and 22 disclosed disposals on record, filed by 13 distinct investors. Together those filings cover ¥75.0B ($484.1M) in reported transaction value. The earliest filing StockDrifts holds for Aica Kogyo Company, Limited is dated 2022-05-09; the most recent is 2026-05-12. Across these filings the average return since disclosure is +8.61%, 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
2026-09-04	BUY	Market Buy	野村アセットマネジメント株式会社	other	2.7M	¥4,088	+6.8%	¥1.1B ($7.1M)
2026-09-04	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	224.4K	¥4,088	-6.8%	¥829M ($5.3M)
2026-09-04	SELL	unknown	野村證券株式会社	other	18.6K	¥4,088	-6.8%	¥2.5B ($16.2M)
2026-05-12	SELL	unknown	みずほ証券株式会社	other	316.7K	¥3,430	-27.3%	¥1.6B ($10.0M)
2026-05-12	SELL	unknown	アセットマネジメントOne株式会社	other	2.5M	¥3,430	-27.3%	¥1.1B ($7.2M)
2026-01-22	BUY	Market Buy	みずほ証券株式会社	other	768.4K	¥3,611	+20.9%	¥342M ($2.2M)
2026-01-22	BUY	Market Buy	アセットマネジメントOne株式会社	other	2.8M	¥3,611	+20.9%	¥49M ($315K)
2026-01-09	BUY	unknown	みずほ証券株式会社	other	677.0K	¥3,546	+23.1%	¥2.4B ($15.5M)
2026-01-09	BUY	unknown	アセットマネジメントOne株式会社	other	2.8M	¥3,546	+23.1%	¥10.0B ($64.4M)
2025-09-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	1.7M	¥3,766	-16.0%	¥1.7B ($11.0M)
2025-09-19	BUY	unknown	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	1.7M	¥3,766	+16.0%	¥993M ($6.4M)
2025-03-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	639.0K	¥3,316	+31.7%	¥2.1B ($13.7M)
2025-03-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	430.2K	¥3,316	+31.7%	¥1.4B ($9.2M)
2025-03-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.4M	¥3,316	+31.7%	¥8.0B ($51.9M)
2024-10-21	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	573.0K	¥3,305	-32.1%	¥2.4B ($15.4M)
2024-10-21	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.3M	¥3,305	+32.1%	¥156M ($1.0M)
2024-10-21	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	708.3K	¥3,305	-32.1%	¥335M ($2.2M)
2024-09-20	BUY	unknown	インベスコ・アセット・マネジメント株式会社 Invesco Asset Management (Japan) Limited	other	3.1M	¥3,351	+30.3%	¥10.4B ($66.8M)
2024-09-20	SELL	unknown	インベスコホンコンリミテッド Invesco Hong Kong Limited	other	88.6K	¥3,351	-30.3%	¥181M ($1.2M)
2024-09-05	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	646.4K	¥3,288	-32.8%	¥756M ($4.9M)
2024-09-05	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	306.6K	¥3,288	-32.8%	¥22M ($143K)
2024-09-05	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.3M	¥3,288	-32.8%	¥156M ($1.0M)
2024-08-19	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	811.6K	¥3,292	+32.6%	¥2.7B ($17.2M)
2024-08-19	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.3M	¥3,292	+32.6%	¥4.2B ($27.0M)
2024-08-19	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.3M	¥3,292	+32.6%	¥4.3B ($27.6M)
2024-07-29	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.3M	¥3,409	-28.1%	¥1.6B ($10.4M)
2024-07-29	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	798.6K	¥3,409	+28.1%	¥1.2B ($7.6M)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.3M	¥3,409	-	-
2024-06-06	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	unknown	0	¥3,382	-29.1%	¥754M ($4.9M)
2024-06-06	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	2.1M	¥3,382	-29.1%	¥2.5B ($16.4M)
2024-06-06	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	1.4M	¥3,382	+29.1%	¥594M ($3.8M)
2024-05-21	BUY	unknown	インベスコ・アセット・マネジメント株式会社 Invesco Asset Management (Japan) Limited	other	3.8M	¥3,434	+27.2%	¥12.9B ($83.1M)
2024-05-21	BUY	unknown	インベスコホンコンリミテッド Invesco Hong Kong Limited	other	144.9K	¥3,434	+27.2%	¥23M ($150K)
2024-05-07	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	885.2K	¥3,462	+26.1%	¥3.1B ($19.8M)
2024-05-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	313.9K	¥3,462	+26.1%	¥1.1B ($7.0M)
2024-05-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.3M	¥3,462	+26.1%	¥8.0B ($51.9M)
2024-04-19	BUY	unknown	インベスコホンコンリミテッド Invesco Hong Kong Limited	other	135.4K	¥3,632	+20.2%	¥74M ($475K)
2024-04-19	BUY	unknown	インベスコ・アセット・マネジメント株式会社 Invesco Asset Management (Japan) Limited	other	4.7M	¥3,632	+20.2%	¥17.0B ($109.4M)
2023-10-05	BUY	Market Buy	インベスコ・アセット・マネジメント株式会社 Invesco Asset Management (Japan) Limited	other	5.5M	¥3,404	+28.3%	¥2.5B ($16.0M)
2023-10-05	BUY	Market Buy	インベスコホンコンリミテッド Invesco Hong Kong Limited	other	112.0K	¥3,404	-	-
2023-09-05	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	888.6K	¥3,486	+25.3%	¥24M ($152K)
2023-09-05	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	128.6K	¥3,486	-25.3%	¥542M ($3.5M)
2023-09-05	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	2.1M	¥3,486	-25.3%	¥1.9B ($12.2M)
2022-09-05	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	885.6K	¥3,070	+42.3%	¥21M ($134K)
2022-09-05	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	285.0K	¥3,070	-42.3%	¥1.1B ($7.2M)
2022-09-05	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	2.7M	¥3,070	-42.3%	¥21M ($134K)
2022-08-19	SELL	subscription	野村證券株式会社 Nomura Securities Co.,Ltd.	other	887.5K	¥3,140	-39.1%	¥170M ($1.1M)
2022-08-19	BUY	subscription	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	670.9K	¥3,140	+39.1%	¥1.9B ($12.3M)
2022-08-19	SELL	subscription	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.7M	¥3,140	-39.1%	¥127M ($822K)
2022-06-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	930.6K	¥2,774	-57.4%	¥19M ($121K)

Showing the 50 most recent of 61 filings.

Frequently asked questions

Who has been buying Aica Kogyo Company, Limited stock?: 13 distinct investors have filed 33 disclosed large-shareholding filings in Aica Kogyo Company, Limited (4206), most recently on 2026-05-12. 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 Aica Kogyo Company, Limited have?: Aica Kogyo Company, Limited has 33 buy-side and 22 sell-side disclosures on record, covering ¥75.0B ($484.1M) in total reported value, spanning 2022-05-09 to 2026-05-12.
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.