Who has been buying ALPHA Corporation stock?

6 distinct investors have filed 16 disclosed large-shareholding filings in ALPHA Corporation (3434), most recently on 2022-04-22. 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 Corporation have?

ALPHA Corporation has 16 buy-side and 5 sell-side disclosures on record, covering ¥813M ($5.2M) in total reported value, spanning 2021-03-29 to 2022-04-22.

Where does StockDrifts get ALPHA 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.

ALPHA Corporation 3434

Company

株式会社アルファALPHA Corporation

Investors

Buys

Total Value

¥813M ($5.2M)

Avg Return

+19.37%

Last Filing

2022-04-22

ALPHA Corporation (3434) has 16 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥813M ($5.2M) in reported transaction value. The earliest filing StockDrifts holds for ALPHA Corporation is dated 2021-03-29; the most recent is 2022-04-22. 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 +19.37%, 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
2022-04-22	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	277.4K	¥970	+28.7%	¥269M ($1.7M)
2022-04-22	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	97.1K	¥970	-28.7%	¥158M ($1.0M)
2022-04-18	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	2.4K	¥944	+32.2%	¥27M ($174K)
2022-04-18	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	45.2K	¥944	+32.2%	¥43M ($275K)
2022-04-18	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	154.2K	¥944	-32.2%	¥963K ($6K)
2022-04-18	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	150.0K	¥944	+32.2%	¥142M ($914K)
2022-03-22	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	150.0K	¥1,046	+19.3%	¥157M ($1.0M)
2022-03-22	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	150.0K	¥1,046	+19.3%	¥157M ($1.0M)
2022-03-22	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	150.0K	¥1,046	+19.3%	¥157M ($1.0M)
2022-03-22	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	175.4K	¥1,046	+19.3%	¥183M ($1.2M)
2022-03-22	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	44.7K	¥1,046	+19.3%	¥47M ($302K)
2022-03-22	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	155.1K	¥1,046	+19.3%	¥162M ($1.0M)
2022-03-22	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	175.4K	¥1,046	+19.3%	¥183M ($1.2M)
2022-03-22	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	44.7K	¥1,046	+19.3%	¥47M ($302K)
2022-03-22	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	155.1K	¥1,046	+19.3%	¥162M ($1.0M)
2022-03-22	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	175.4K	¥1,046	+19.3%	¥183M ($1.2M)
2022-03-22	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	44.7K	¥1,046	+19.3%	¥47M ($302K)
2022-03-22	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	155.1K	¥1,046	+19.3%	¥162M ($1.0M)
2022-02-22	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	277.4K	¥1,085	+15.0%	¥301M ($1.9M)
2022-02-22	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	259.8K	¥1,085	+15.0%	¥282M ($1.8M)
2021-04-19	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	4.9K	¥1,156	-8.0%	¥205M ($1.3M)
2021-04-19	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	38.7K	¥1,156	+8.0%	¥45M ($289K)
2021-04-19	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	163.6K	¥1,156	-8.0%	¥6M ($38K)
2021-04-19	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	150.0K	¥1,156	+8.0%	¥173M ($1.1M)
2021-03-29	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	183.0K	¥1,076.218	+16.0%	¥197M ($1.3M)
2021-03-29	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	38.5K	¥1,076.218	+16.0%	¥1M ($7K)
2021-03-29	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	168.6K	¥1,076.218	-16.0%	¥3M ($21K)
2021-03-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	150.0K	¥1,076.218	+16.0%	¥161M ($1.0M)

Frequently asked questions

Who has been buying ALPHA Corporation stock?: 6 distinct investors have filed 16 disclosed large-shareholding filings in ALPHA Corporation (3434), most recently on 2022-04-22. 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 Corporation have?: ALPHA Corporation has 16 buy-side and 5 sell-side disclosures on record, covering ¥813M ($5.2M) in total reported value, spanning 2021-03-29 to 2022-04-22.
Where does StockDrifts get ALPHA 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 ALPHA Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.