Who has been buying AI Partners Financial Inc. stock?

6 distinct investors have filed 20 disclosed large-shareholding filings in AI Partners Financial Inc. (7345), most recently on 2026-04-03. 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 AI Partners Financial Inc. have?

AI Partners Financial Inc. has 20 buy-side and 10 sell-side disclosures on record, covering ¥366M ($2.4M) in total reported value, spanning 2021-06-23 to 2026-04-03.

Where does StockDrifts get AI Partners Financial 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.

AI Partners Financial Inc. 7345

Company

株式会社アイ・パートナーズフィナンシャルAI Partners Financial Inc.

Investors

Buys

Total Value

¥366M ($2.4M)

Avg Return

+81.22%

Last Filing

2026-04-03

AI Partners Financial Inc. (7345) has 20 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥366M ($2.4M) in reported transaction value. The earliest filing StockDrifts holds for AI Partners Financial Inc. is dated 2021-06-23; the most recent is 2026-04-03. 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 +81.22%, 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
2026-04-03	BUY	Market Buy	千代田インベストメント株式会社 Chiyoda Investment Co, Ltd.	passive	373.9K	¥1,065	+1.3%	¥28M ($180K)
2026-01-21	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	159.4K	¥776	-29.4%	¥24M ($152K)
2025-12-23	SELL	unknown	中道謙 Ken Nakamichi	strategic	320.0K	¥650	-54.5%	¥24M ($157K)
2025-10-21	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	189.9K	¥600	+67.3%	¥114M ($735K)
2025-09-22	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	126.1K	¥605	-66.0%	¥56M ($364K)
2025-05-20	BUY	Market Buy	千代田インベストメント株式会社 Chiyoda Investment Co, Ltd.	passive	347.7K	¥554	+81.2%	¥21M ($133K)
2025-04-21	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	219.3K	¥575	+74.6%	¥126M ($814K)
2025-03-28	BUY	Market Buy	千代田インベストメント株式会社 Chiyoda Investment Co, Ltd.	passive	309.7K	¥599	+67.6%	¥24M ($158K)
2025-03-21	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	160.7K	¥596	-68.5%	¥51M ($327K)
2024-11-21	BUY	Market Buy	千代田インベストメント株式会社 Chiyoda Investment Co, Ltd.	passive	266.6K	¥590	+70.2%	¥33M ($215K)
2024-11-14	BUY	Market Buy	千代田インベストメント株式会社 Chiyoda Investment Co, Ltd.	passive	210.0K	¥616	+63.0%	¥129M ($835K)
2024-10-21	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	243.5K	¥557	+80.3%	¥136M ($875K)
2024-10-04	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	165.7K	¥598	-67.9%	¥56M ($364K)
2024-04-19	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	257.6K	¥381	+163.5%	¥98M ($633K)
2024-04-04	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	147.6K	¥414	-142.5%	¥45M ($291K)
2024-01-19	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	255.8K	¥405	+147.9%	¥8M ($52K)
2023-12-06	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	235.7K	¥408	+146.1%	¥96M ($620K)
2023-08-21	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	171.5K	¥455	-120.7%	¥31M ($201K)
2023-05-19	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	237.5K	¥424	+136.8%	¥16M ($103K)
2023-04-20	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	199.9K	¥469	+114.1%	¥94M ($605K)
2023-04-06	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	82.2K	¥471	-113.2%	¥53M ($345K)
2022-10-20	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	195.2K	¥481	+108.7%	¥94M ($606K)
2022-10-06	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	147.0K	¥497	-102.0%	¥39M ($251K)
2022-07-06	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	225.4K	¥580	+73.1%	¥131M ($843K)
2022-02-25	BUY	unknown	田中いすず Isuzu Tanaka	activist	2.0K	¥505.5	+98.6%	¥1M ($7K)
2022-02-25	BUY	unknown	田中譲治 JOJI TANAKA	activist	47.0K	¥505.5	+98.6%	¥24M ($153K)
2021-12-21	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	25.6K	¥930	-8.0%	¥19M ($119K)
2021-10-06	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	44.4K	¥951.25	+5.5%	¥42M ($272K)
2021-06-24	BUY	unknown	石原章太郎 Shotaro Ishihara	activist	89.2K	¥2,242.5	-55.2%	¥200M ($1.3M)
2021-06-23	BUY	unknown	中道謙 Ken Nakamichi	strategic	80.0K	-	-	-

Frequently asked questions

Who has been buying AI Partners Financial Inc. stock?: 6 distinct investors have filed 20 disclosed large-shareholding filings in AI Partners Financial Inc. (7345), most recently on 2026-04-03. 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 AI Partners Financial Inc. have?: AI Partners Financial Inc. has 20 buy-side and 10 sell-side disclosures on record, covering ¥366M ($2.4M) in total reported value, spanning 2021-06-23 to 2026-04-03.
Where does StockDrifts get AI Partners Financial 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 AI Partners Financial Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.