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Alpha Systems Inc. 4719

Company
株式会社アルファシステムズAlpha Systems Inc.
Investors
3
Buys
2
Total Value
¥526M ($3.4M)
Avg Return
-9.11%
Last Filing
2025-01-28

Alpha Systems Inc. (4719) has 2 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥526M ($3.4M) in reported transaction value. The earliest filing StockDrifts holds for Alpha Systems Inc. is dated 2021-10-22; the most recent is 2025-01-28. Across these filings the average return since disclosure is -9.11%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2025-01-28BUYMarket Buy
シンプレクス・アセット・マネジメント株式会社
Simplex Asset Management Co., Ltd.
passive2.1M¥3,405-1.6%¥478M ($3.1M)
2021-10-22BUYMarket Buy
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic198.0K¥4,190-20.1%¥47M ($304K)
2021-10-22SELLMarket Buy
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other411.2K¥4,190+20.1%¥601M ($3.9M)

Frequently asked questions

Who has been buying Alpha Systems Inc. stock?
3 distinct investors have filed 2 disclosed large-shareholding filings in Alpha Systems Inc. (4719), most recently on 2025-01-28. 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 Alpha Systems Inc. have?
Alpha Systems Inc. has 2 buy-side and 1 sell-side disclosures on record, covering ¥526M ($3.4M) in total reported value, spanning 2021-10-22 to 2025-01-28.
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.