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Kamei Corporation 8037

Company
カメイ株式会社Kamei Corporation
Investors
5
Buys
5
Total Value
¥1.8B ($11.4M)
Avg Return
+43.23%
Last Filing
2026-05-12

Kamei Corporation (8037) has 5 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥1.8B ($11.4M) in reported transaction value. The earliest filing StockDrifts holds for Kamei Corporation is dated 2023-04-07; the most recent is 2026-05-12. 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 +43.23%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-05-12BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive2.1M¥3,345+2.8%¥1.1B ($7.4M)
2025-09-29BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive1.7M¥2,937+11.8%¥233M ($1.5M)
2025-08-07BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive1.7M¥2,688+22.2%¥4.4B ($28.6M)
2024-07-08BUYnegotiated
有限会社亀井興産
Kamei Kosan Ltd.
activist3.0M¥2,255+45.7%¥6.8B ($43.6M)
2024-07-08SELLnegotiated
カメイ不動産株式会社
Kamei Real Estate Co., Ltd.
activist1.6M¥2,255-45.7%¥1.8B ($11.6M)
2024-07-08BUYnegotiated
亀井 文行
Fumiyuki Kamei
activist2.5M¥2,255+45.7%¥5.7B ($36.5M)
2024-06-14BUYMarket Buy
有限会社亀井興産
Kamei Kosan Ltd.
activist3.0M¥2,150+52.8%¥6.5B ($41.6M)
2024-06-14BUYMarket Buy
カメイ不動産株式会社
Kamei Real Estate Co., Ltd.
activist2.4M¥2,150+52.8%¥5.3B ($33.9M)
2024-06-14BUYMarket Buy
亀井 文行
Fumiyuki Kamei
activist2.5M¥2,150+52.8%¥8M ($52K)
2023-08-22SELLunknown
エフエムアール エルエルシー(FMR LLC)
FMR LLC
other1.6M¥1,439-128.3%¥1.0B ($6.8M)
2023-07-07SELLunknown
エフエムアール エルエルシー(FMR LLC)
FMR LLC
other2.3M¥1,465-124.2%¥661M ($4.3M)
2023-04-07BUYMarket Buy
エフエムアール エルエルシー(FMR LLC)
FMR LLC
other2.8M¥1,429+129.9%¥618M ($4.0M)

Frequently asked questions

Who has been buying Kamei Corporation stock?
5 distinct investors have filed 5 disclosed large-shareholding filings in Kamei Corporation (8037), 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 Kamei Corporation have?
Kamei Corporation has 5 buy-side and 3 sell-side disclosures on record, covering ¥1.8B ($11.4M) in total reported value, spanning 2023-04-07 to 2026-05-12.
Where does StockDrifts get Kamei 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 Kamei Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.