Who has been buying Aeria Inc. stock?

4 distinct investors have filed 7 disclosed large-shareholding filings in Aeria Inc. (3758), most recently on 2025-05-15. 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 Aeria Inc. have?

Aeria Inc. has 7 buy-side and 1 sell-side disclosures on record, covering ¥286M ($1.8M) in total reported value, spanning 2023-07-20 to 2025-05-15.

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.

Aeria Inc. 3758

Company

株式会社アエリアAeria Inc.

Investors

Buys

Total Value

¥286M ($1.8M)

Avg Return

-8.21%

Last Filing

2025-05-15

Aeria Inc. (3758) has 7 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥286M ($1.8M) in reported transaction value. The earliest filing StockDrifts holds for Aeria Inc. is dated 2023-07-20; the most recent is 2025-05-15. Across these filings the average return since disclosure is -8.21%, 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
2025-05-15	BUY	Market Buy	長嶋貴之 Takayuki Nagashima	activist	3.2M	¥250	-0.8%	¥117M ($757K)
2025-05-15	BUY	Market Buy	小林祐介 Yusuke Kobayashi	activist	2.4M	¥250	-0.8%	¥74M ($476K)
2025-05-15	SELL	Market Buy	小林喜代美 Kiyomi Kobayashi	activist	30.0K	¥250	+0.8%	¥683M ($4.4M)
2025-05-15	BUY	Market Buy	TUSCAN CAPITAL LLC	activist	508.6K	¥250	-0.8%	¥13M ($82K)
2025-04-16	BUY	negotiated	小林祐介 Yusuke Kobayashi	activist	2.3M	¥227	+9.3%	¥7M ($45K)
2025-04-16	BUY	Market Buy	小林祐介 Yusuke Kobayashi	activist	2.3M	¥227	+9.3%	¥7M ($45K)
2025-04-16	BUY	Market Buy	小林喜代美 Kiyomi Kobayashi	activist	30.0K	¥227	-	-
2025-04-16	BUY	Market Buy	TUSCAN CAPITAL LLC	activist	508.6K	¥227	-	-
2025-04-16	BUY	negotiated	小林喜代美 Kiyomi Kobayashi	activist	30.0K	¥227	-	-
2025-04-16	BUY	negotiated	TUSCAN CAPITAL LLC	activist	508.6K	¥227	-	-
2023-07-20	BUY	negotiated	小林祐介 Yusuke Kobayashi	activist	2.3M	¥409	-39.4%	¥41M ($262K)
2023-07-20	BUY	Market Buy	小林喜代美 Kiyomi Kobayashi	activist	30.0K	¥409	-	-
2023-07-20	BUY	Market Buy	TUSCAN CAPITAL LLC	activist	508.6K	¥409	-	-
2023-07-20	BUY	negotiated	小林喜代美 Kiyomi Kobayashi	activist	30.0K	¥409	-	-
2023-07-20	BUY	negotiated	TUSCAN CAPITAL LLC	activist	508.6K	¥409	-	-
2023-07-20	BUY	Market Buy	小林祐介 Yusuke Kobayashi	activist	2.3M	¥409	-39.4%	¥41M ($262K)

Frequently asked questions

Who has been buying Aeria Inc. stock?: 4 distinct investors have filed 7 disclosed large-shareholding filings in Aeria Inc. (3758), most recently on 2025-05-15. 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 Aeria Inc. have?: Aeria Inc. has 7 buy-side and 1 sell-side disclosures on record, covering ¥286M ($1.8M) in total reported value, spanning 2023-07-20 to 2025-05-15.
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.