Who has been buying AB&Company Co.,Ltd. stock?

8 distinct investors have filed 13 disclosed large-shareholding filings in AB&Company Co.,Ltd. (9251), most recently on 2025-03-19. 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 AB&Company Co.,Ltd. have?

AB&Company Co.,Ltd. has 13 buy-side and 3 sell-side disclosures on record, covering ¥10.3B ($66.3M) in total reported value, spanning 2021-11-29 to 2025-03-19.

Where does StockDrifts get AB&Company Co.,Ltd. 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.

AB&Company Co.,Ltd. 9251

Company

株式会社AB&CompanyAB&Company Co.,Ltd.

Investors

Buys

Total Value

¥10.3B ($66.3M)

Avg Return

+11.61%

Last Filing

2025-03-19

AB&Company Co.,Ltd. (9251) has 13 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥10.3B ($66.3M) in reported transaction value. The earliest filing StockDrifts holds for AB&Company Co.,Ltd. is dated 2021-11-29; the most recent is 2025-03-19. 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 +11.61%, 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
2025-03-19	BUY	unknown	株式会社MCC MCC Co., Ltd.	strategic	492.5K	¥909	+33.4%	¥448M ($2.9M)
2025-03-19	SELL	unknown	丹内悠佑 Tannai Yusuke	activist	1.0M	¥909	-33.4%	¥449M ($2.9M)
2024-04-23	BUY	Market Buy	サンライズ・マネージメント・リミテッド・スリー Sunrise Management Limited III	passive	68.5K	¥897	+35.2%	¥58M ($373K)
2024-04-23	BUY	Market Buy	サンライズ・マネージメント(ノン・ユーエス)・リミテッド・スリーLimited III) Sunrise Management (Non-U.S.	passive	67.1K	¥897	+35.2%	¥57M ($365K)
2024-04-23	BUY	Market Buy	サンライズ・マネージメント・リミテッド・スリー Sunrise Management Limited III	passive	68.5K	¥897	+35.2%	¥58M ($373K)
2024-04-23	BUY	Market Buy	サンライズ・マネージメント(ノン・ユーエス)・リミテッド・スリーLimited III) Sunrise Management (Non-U.S.	passive	67.1K	¥897	+35.2%	¥57M ($365K)
2023-10-16	BUY	Market Buy	サンライズ・マネージメント・リミテッド・スリー Sunrise Management Limited III	passive	343.6K	¥1,096	+10.7%	¥348M ($2.2M)
2023-10-16	BUY	Market Buy	サンライズ・マネージメント(ノン・ユーエス)・リミテッド・スリーLimited III) Sunrise Management (Non-U.S.	passive	335.8K	¥1,096	+10.7%	¥339M ($2.2M)
2021-12-24	SELL	Market Buy	サンライズ・マネージメント・リミテッド・スリー Sunrise Management Limited III	passive	2.6M	¥1,261	+3.8%	¥272M ($1.8M)
2021-12-24	SELL	Market Buy	サンライズ・マネージメント(ノン・ユーエス)・リミテッド・スリーLimited III) Sunrise Management (Non-U.S.	passive	2.6M	¥1,261	+3.8%	¥265M ($1.7M)
2021-11-29	BUY	unknown	株式会社SunFlower SunFlower Co., Ltd.	activist	1.0M	¥1,233	-1.6%	¥1.3B ($8.2M)
2021-11-29	BUY	unknown	株式会社Logotype Logotype Co., Ltd.	activist	1.0M	¥1,233	-1.6%	¥1.3B ($8.2M)
2021-11-29	BUY	unknown	株式会社I.M.C I.M.C Co., Ltd.	activist	442.1K	¥1,233	-1.6%	¥545M ($3.5M)
2021-11-29	BUY	unknown	市瀬一浩 Kazuhiro Ichise	activist	494.8K	¥1,233	-1.6%	¥610M ($3.9M)
2021-11-29	BUY	unknown	丹内悠佑 Tannai Yusuke	strategic	1.5M	¥1,233	-1.6%	¥1.9B ($12.0M)
2021-11-29	BUY	Market Buy	サンライズ・マネージメント・リミテッド・スリー Sunrise Management Limited III	passive	2.8M	¥1,233	-1.6%	¥3.5B ($22.7M)
2021-11-29	BUY	Market Buy	サンライズ・マネージメント(ノン・ユーエス)・リミテッド・スリーLimited III) Sunrise Management (Non-U.S.	passive	2.8M	¥1,233	-1.6%	¥3.4B ($22.1M)

Frequently asked questions

Who has been buying AB&Company Co.,Ltd. stock?: 8 distinct investors have filed 13 disclosed large-shareholding filings in AB&Company Co.,Ltd. (9251), most recently on 2025-03-19. 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 AB&Company Co.,Ltd. have?: AB&Company Co.,Ltd. has 13 buy-side and 3 sell-side disclosures on record, covering ¥10.3B ($66.3M) in total reported value, spanning 2021-11-29 to 2025-03-19.
Where does StockDrifts get AB&Company Co.,Ltd. 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 AB&Company Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.