Who has been buying Asti Corporation stock?

2 distinct investors have filed 3 disclosed large-shareholding filings in Asti Corporation (6899), most recently on 2025-07-16. 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 Asti Corporation have?

Asti Corporation has 3 buy-side and 5 sell-side disclosures on record, covering ¥71M ($457K) in total reported value, spanning 2021-03-22 to 2025-07-16.

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.

Asti Corporation 6899

Company

ASTI株式会社Asti Corporation

Investors

Buys

Total Value

¥71M ($457K)

Avg Return

+17.72%

Last Filing

2025-07-16

Asti Corporation (6899) has 3 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥71M ($457K) in reported transaction value. The earliest filing StockDrifts holds for Asti Corporation is dated 2021-03-22; the most recent is 2025-07-16. Across these filings the average return since disclosure is +17.72%, 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
2025-07-16	BUY	Market Buy	ASTI共栄会理事長渡邊唯志 Tadashi Watanabe	strategic	250.9K	¥1,802	+27.4%	¥65M ($421K)
2024-04-22	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	140.3K	¥3,215	+28.6%	¥143M ($921K)
2024-03-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	184.7K	¥3,525	+34.9%	¥143M ($925K)
2024-02-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	225.6K	¥3,260	+29.6%	¥114M ($733K)
2023-12-22	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	260.3K	¥2,939	+21.9%	¥122M ($784K)
2023-11-08	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	301.6K	¥3,645	+37.0%	¥143M ($924K)
2023-04-07	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	340.9K	¥2,832	-	-
2023-02-22	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	340.9K	¥2,705	-15.1%	¥6M ($36K)
2021-03-22	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	338.9K	¥1,808.01	+27.0%	¥86M ($558K)

Frequently asked questions

Who has been buying Asti Corporation stock?: 2 distinct investors have filed 3 disclosed large-shareholding filings in Asti Corporation (6899), most recently on 2025-07-16. 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 Asti Corporation have?: Asti Corporation has 3 buy-side and 5 sell-side disclosures on record, covering ¥71M ($457K) in total reported value, spanning 2021-03-22 to 2025-07-16.
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.