Who has been buying A-One Seimitsu Inc. stock?

2 distinct investors have filed 2 disclosed large-shareholding filings in A-One Seimitsu Inc. (6156), most recently on 2024-06-05. 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 A-One Seimitsu Inc. have?

A-One Seimitsu Inc. has 2 buy-side and 8 sell-side disclosures on record, covering ¥146M ($943K) in total reported value, spanning 2021-07-05 to 2024-06-05.

Where does StockDrifts get A-One Seimitsu Inc. 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.

A-One Seimitsu Inc. 6156

Company

株式会社エーワン精密A-One Seimitsu Inc.

Investors

Buys

Total Value

¥146M ($943K)

Avg Return

+22.54%

Last Filing

2024-06-05

A-One Seimitsu Inc. (6156) has 2 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥146M ($943K) in reported transaction value. The earliest filing StockDrifts holds for A-One Seimitsu Inc. is dated 2021-07-05; the most recent is 2024-06-05. 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 +22.54%, 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
2024-06-05	SELL	Market Buy	アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited) Asset Value Investors Limited	activist	264.8K	¥1,997	+0.8%	¥107M ($690K)
2024-05-27	SELL	Market Buy	アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited) Asset Value Investors Limited	activist	318.6K	¥2,009	+1.4%	¥108M ($694K)
2024-05-14	SELL	Market Buy	アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited) Asset Value Investors Limited	activist	372.3K	¥2,041	+3.0%	¥110M ($712K)
2024-04-25	SELL	Market Buy	アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited) Asset Value Investors Limited	activist	426.3K	¥2,070	+4.3%	¥115M ($743K)
2024-04-04	SELL	Market Buy	アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited) Asset Value Investors Limited	activist	481.6K	¥2,180	+9.2%	¥124M ($798K)
2024-03-15	BUY	Market Buy	アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited) Asset Value Investors Limited	activist	538.3K	¥1,999	-0.9%	¥146M ($943K)
2023-09-25	SELL	Market 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.	passive	247.9K	¥1,990	+0.5%	¥121M ($778K)
2022-12-22	SELL	Market 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.	passive	308.6K	¥1,660	-19.3%	¥104M ($668K)
2022-07-07	SELL	Market 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.	passive	370.9K	¥1,552	-27.6%	¥190M ($1.2M)
2021-08-13	BUY	Market Buy	アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited) Asset Value Investors Limited	activist	526.5K	¥1,374	+44.1%	¥723M ($4.7M)
2021-07-05	BUY	Market Buy	アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited) Asset Value Investors Limited	activist	526.5K	¥1,356	+46.0%	¥202M ($1.3M)

Frequently asked questions

Who has been buying A-One Seimitsu Inc. stock?: 2 distinct investors have filed 2 disclosed large-shareholding filings in A-One Seimitsu Inc. (6156), most recently on 2024-06-05. 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 A-One Seimitsu Inc. have?: A-One Seimitsu Inc. has 2 buy-side and 8 sell-side disclosures on record, covering ¥146M ($943K) in total reported value, spanning 2021-07-05 to 2024-06-05.
Where does StockDrifts get A-One Seimitsu Inc. 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 A-One Seimitsu Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.