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JAMCO Corporation 7408

Company
株式会社ジャムコJAMCO Corporation
Investors
7
Buys
9
Total Value
¥83.6B ($539.7M)
Avg Return
+0.06%
Last Filing
2025-05-28

JAMCO Corporation (7408) has 9 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥83.6B ($539.7M) in reported transaction value. The earliest filing StockDrifts holds for JAMCO Corporation is dated 2025-01-17; the most recent is 2025-05-28. 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 +0.06%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2025-05-28BUYMarket Buy
伊藤忠商事株式会社
ITOCHU Corporation
strategic16.7M¥1,792+0.1%¥13.8B ($89.1M)
2025-05-22BUYacquisition
昭和飛行機工業株式会社
Showa Aircraft Industry Co., Ltd.
other2.0M¥1,790+0.2%¥3.6B ($23.1M)
2025-05-22BUYMarket Buy
ANAホールディングス株式会社
ANA HOLDINGS INC.
other17.5M¥1,790+0.2%¥21.7B ($139.8M)
2025-05-22BUYacquisition
株式会社BCJ-92
BCJ-92 Co., Ltd.
activist12.1M¥1,790+0.2%¥21.7B ($139.7M)
2025-05-09SELLunknown
野村アセットマネジメント株式会社
Nomura Asset Management Co., Ltd.
other304.7K¥1,797+0.2%¥116M ($747K)
2025-05-09SELLunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other613.6K¥1,797+0.2%¥714M ($4.6M)
2025-05-09BUYunknown
野村證券株式会社
Nomura Securities Co.,Ltd.
other264.0K¥1,797-0.2%¥43.9B ($283.4M)
2025-02-07BUYunknown
野村アセットマネジメント株式会社
Nomura Asset Management Co., Ltd.
other367.5K¥1,795-0.1%¥660M ($4.3M)
2025-02-07BUYunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other1.0M¥1,795-0.1%¥1.8B ($11.7M)
2025-02-07BUYunknown
野村證券株式会社
Nomura Securities Co.,Ltd.
other19.3K¥1,795-0.1%¥35M ($223K)
2025-01-21BUYMarket Buy
伊藤忠商事株式会社
ITOCHU Corporation
strategic9.0M¥1,792+0.1%¥101M ($652K)
2025-01-20BUYunknown
昭和飛行機工業株式会社
Showa Aircraft Industry Co., Ltd.
other2.0M¥1,791+0.2%¥3.6B ($23.1M)
2025-01-17BUYunknown
ANAホールディングス株式会社
ANA HOLDINGS INC.
other5.4M¥1,791+0.2%¥9.6B ($62.1M)

Frequently asked questions

Who has been buying JAMCO Corporation stock?
7 distinct investors have filed 9 disclosed large-shareholding filings in JAMCO Corporation (7408), most recently on 2025-05-28. 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 JAMCO Corporation have?
JAMCO Corporation has 9 buy-side and 2 sell-side disclosures on record, covering ¥83.6B ($539.7M) in total reported value, spanning 2025-01-17 to 2025-05-28.
Where does StockDrifts get JAMCO Corporation 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 JAMCO Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.