Who has been buying Aida Engineering, Ltd. stock?

10 distinct investors have filed 15 disclosed large-shareholding filings in Aida Engineering, Ltd. (6118), most recently on 2025-11-07. 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 Aida Engineering, Ltd. have?

Aida Engineering, Ltd. has 15 buy-side and 12 sell-side disclosures on record, covering ¥2.2B ($14.0M) in total reported value, spanning 2021-11-30 to 2025-11-07.

Where does StockDrifts get Aida Engineering, 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.

Aida Engineering, Ltd. 6118

Company

アイダエンジニアリング株式会社Aida Engineering, Ltd.

Investors

Buys

Total Value

¥2.2B ($14.0M)

Avg Return

+35.80%

Last Filing

2025-11-07

Aida Engineering, Ltd. (6118) has 15 disclosed large-shareholding filings and 12 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥2.2B ($14.0M) in reported transaction value. The earliest filing StockDrifts holds for Aida Engineering, Ltd. is dated 2021-11-30; the most recent is 2025-11-07. 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 +35.80%, 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
2025-11-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	661.1K	¥907	-34.8%	¥592M ($3.8M)
2025-11-07	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	4.3M	¥907	+34.8%	¥284M ($1.8M)
2025-11-07	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	105.4K	¥907	-34.8%	¥6M ($37K)
2025-11-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	2.2M	¥907	+34.8%	¥157M ($1.0M)
2025-10-17	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	3.0M	¥918	+33.2%	¥2.8B ($18.0M)
2025-10-17	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	176.4K	¥918	+33.2%	¥162M ($1.0M)
2025-05-29	BUY	unknown	メロン・インベストメンツ・コーポレーション Mellon Investments Corporation	other	195.7K	¥939	+30.2%	¥6M ($41K)
2025-05-29	SELL	unknown	ニュートン・インベストメント・マネジメント・ジャパン株式会社 Newton Investment Management Japan Ltd.	other	2.5M	¥939	-30.2%	¥795M ($5.1M)
2025-03-13	SELL	unknown	メロン・インベストメンツ・コーポレーション Mellon Investments Corporation	other	190.4K	¥865	-41.4%	¥12M ($75K)
2025-03-13	SELL	unknown	ニュートン・インベストメント・マネジメント・ジャパン株式会社 Newton Investment Management Japan Ltd.	other	3.4M	¥865	-41.4%	¥616M ($4.0M)
2025-02-13	BUY	unknown	メロン・インベストメンツ・コーポレーション Mellon Investments Corporation	other	202.8K	¥827	+47.9%	¥22M ($143K)
2025-02-13	SELL	unknown	ニュートン・インベストメント・マネジメント・ジャパン株式会社 Newton Investment Management Japan Ltd.	other	4.1M	¥827	-47.9%	¥884M ($5.7M)
2024-04-25	BUY	unknown	メロン・インベストメンツ・コーポレーション Mellon Investments Corporation	other	177.9K	¥900	+35.9%	¥163M ($1.0M)
2024-04-25	BUY	unknown	ニュートン・インベストメント・マネジメント・ジャパン株式会社 Newton Investment Management Japan Ltd.	other	5.3M	¥900	+35.9%	¥4.8B ($30.7M)
2023-11-21	SELL	Market Buy	第一生命保険株式会社 The Dai-ichi Life Insurance Company, Limited	passive	3.1M	¥887	-37.9%	¥641M ($4.1M)
2023-03-17	BUY	unknown	ニュートン・インベストメント・マネジメント・ジャパン株式会社 Newton Investment Management Japan Ltd.	other	6.1M	¥805	+51.9%	¥4.9B ($31.5M)
2023-03-17	SELL	unknown	BNYメロン・インベストメント・マネジメント・ジャパン株式会社 BNY Mellon Investment Management Japan Limited	other	0	¥805	-51.9%	¥4.7B ($30.5M)
2022-11-17	BUY	Market Buy	BNYメロン・インベストメント・マネジメント・ジャパン株式会社 BNY Mellon Investment Management Japan Limited	other	5.9M	¥813	+50.4%	¥610M ($3.9M)
2022-09-01	BUY	Market Buy	BNYメロン・インベストメント・マネジメント・ジャパン株式会社 BNY Mellon Investment Management Japan Limited	other	5.1M	¥849	+44.0%	¥596M ($3.8M)
2022-06-30	BUY	Market Buy	BNYメロン・インベストメント・マネジメント・ジャパン株式会社 BNY Mellon Investment Management Japan Limited	other	4.4M	¥909	+34.5%	¥783M ($5.1M)
2022-03-08	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.4M	¥911	-34.3%	¥101M ($653K)
2022-03-08	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	4.4M	¥911	+34.3%	¥810M ($5.2M)
2022-03-08	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	120.9K	¥911	-34.3%	¥6.9B ($44.2M)
2022-03-08	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	2.2M	¥911	+34.3%	¥2.0B ($12.8M)
2022-01-27	BUY	unknown	BNYメロン・インベストメント・マネジメント・ジャパン株式会社 BNY Mellon Investment Management Japan Limited	other	3.6M	¥999	+22.4%	¥3.5B ($22.9M)
2021-11-30	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	2.2M	¥922	+32.6%	¥115M ($744K)
2021-11-30	SELL	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.5M	¥922	-32.6%	¥26M ($165K)
2021-11-30	BUY	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	3.5M	¥922	+32.6%	¥250M ($1.6M)
2021-11-30	SELL	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	76.3K	¥922	-32.6%	¥51M ($330K)

Frequently asked questions

Who has been buying Aida Engineering, Ltd. stock?: 10 distinct investors have filed 15 disclosed large-shareholding filings in Aida Engineering, Ltd. (6118), most recently on 2025-11-07. 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 Aida Engineering, Ltd. have?: Aida Engineering, Ltd. has 15 buy-side and 12 sell-side disclosures on record, covering ¥2.2B ($14.0M) in total reported value, spanning 2021-11-30 to 2025-11-07.
Where does StockDrifts get Aida Engineering, 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 Aida Engineering, Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.