Who has been buying AEON Financial Service Co., Ltd. stock?

10 distinct investors have filed 15 disclosed large-shareholding filings in AEON Financial Service Co., Ltd. (8570), most recently on 2026-05-13. 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 AEON Financial Service Co., Ltd. have?

AEON Financial Service Co., Ltd. has 15 buy-side and 6 sell-side disclosures on record, covering ¥51.6B ($332.8M) in total reported value, spanning 2021-10-21 to 2026-05-13.

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.

AEON Financial Service Co., Ltd. 8570

Company

イオンフィナンシャルサービス株式会社AEON Financial Service Co., Ltd.

Investors

Buys

Total Value

¥51.6B ($332.8M)

Avg Return

+12.09%

Last Filing

2026-05-13

AEON Financial Service Co., Ltd. (8570) has 15 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥51.6B ($332.8M) in reported transaction value. The earliest filing StockDrifts holds for AEON Financial Service Co., Ltd. is dated 2021-10-21; the most recent is 2026-05-13. Across these filings the average return since disclosure is +12.09%, 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
2026-08-12	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	23.3M	¥1,628.5	-0.1%	¥3.6B ($23.1M)
2026-05-13	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	other	21.1M	¥1,560	+4.2%	¥168M ($1.1M)
2026-05-12	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	21.0M	¥1,551	+4.8%	¥5.5B ($35.7M)
2026-05-11	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	17.5M	¥1,532.5	+6.1%	¥5.5B ($35.5M)
2026-02-10	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	13.9M	¥1,795.5	-9.4%	¥5.1B ($33.0M)
2025-12-18	BUY	acquisition	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	11.0M	¥1,583	+2.7%	¥17.4B ($112.5M)
2024-03-08	BUY	Market Buy	株式会社コックス Cox Co., Ltd.	strategic	1.2M	¥1,330	-	-
2024-03-08	SELL	Market Buy	株式会社ジーフット G-Foot Co., Ltd.	other	0	¥1,330	-22.3%	¥71.8B ($463.4M)
2024-03-08	BUY	Market Buy	イオン株式会社 AEON CO.,LTD.	corporate	104.1M	¥1,330	+22.3%	¥1.1B ($7.0M)
2024-03-08	SELL	Market Buy	マックスバリュ西日本株式会社 MAXVALU NISHINIHON CO.,LTD.	other	0	¥1,330	-22.3%	¥3.5B ($22.8M)
2024-03-08	BUY	Market Buy	株式会社フジ Fuji Co., Ltd.	strategic	2.6M	¥1,330	+22.3%	¥3.5B ($22.8M)
2023-12-06	SELL	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	8.7M	¥1,281.5	-26.9%	¥3.3B ($21.3M)
2023-09-21	BUY	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	11.3M	¥1,315.5	+23.6%	¥14.7B ($94.7M)
2023-09-21	BUY	Market Buy	シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited	passive	65.5K	¥1,315.5	+23.6%	¥8.2B ($53.0M)
2023-05-19	BUY	Market Buy	MFSインベストメント・マネジメント株式会社 MFS Investment Management K.K.	passive	570.4K	¥1,217	-	-
2023-05-19	BUY	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー Massachusetts Financial Services Company	passive	8.6M	¥1,217	+33.6%	¥10.3B ($66.2M)
2023-04-21	SELL	Market Buy	MFSインベストメント・マネジメント株式会社 MFS Investment Management K.K.	passive	570.4K	¥1,209	-34.5%	¥470M ($3.0M)
2023-04-21	BUY	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー Massachusetts Financial Services Company	passive	12.5M	¥1,209	+34.5%	¥15.0B ($96.8M)
2023-04-20	BUY	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	13.6M	¥1,218	+33.5%	¥3.2B ($20.4M)
2023-04-20	SELL	Market Buy	シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited	passive	237.3K	¥1,218	-33.5%	¥3.2B ($20.5M)
2023-04-06	BUY	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	11.0M	¥1,225	+32.7%	¥3.0B ($19.3M)
2023-04-06	SELL	Market Buy	シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited	passive	2.8M	¥1,225	-32.7%	¥26M ($171K)
2021-10-21	BUY	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	8.6M	¥1,480	+9.9%	¥12.7B ($81.8M)
2021-10-21	BUY	Market Buy	シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited	passive	2.9M	¥1,480	+9.9%	¥4.2B ($27.4M)

Frequently asked questions

Who has been buying AEON Financial Service Co., Ltd. stock?: 10 distinct investors have filed 15 disclosed large-shareholding filings in AEON Financial Service Co., Ltd. (8570), most recently on 2026-05-13. 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 AEON Financial Service Co., Ltd. have?: AEON Financial Service Co., Ltd. has 15 buy-side and 6 sell-side disclosures on record, covering ¥51.6B ($332.8M) in total reported value, spanning 2021-10-21 to 2026-05-13.
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.