Who has been buying The Keihin Co., Ltd. stock?

13 distinct investors have filed 9 disclosed large-shareholding filings in The Keihin Co., Ltd. (9312), most recently on 2025-12-04. 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 The Keihin Co., Ltd. have?

The Keihin Co., Ltd. has 9 buy-side and 7 sell-side disclosures on record, covering ¥1.3B ($8.5M) in total reported value, spanning 2022-05-18 to 2025-12-04.

Where does StockDrifts get The Keihin 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.

The Keihin Co., Ltd. 9312

Company

ケイヒン株式会社The Keihin Co., Ltd.

Investors

Buys

Total Value

¥1.3B ($8.5M)

Avg Return

+67.60%

Last Filing

2025-12-04

The Keihin Co., Ltd. (9312) has 9 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 13 distinct investors. Together those filings cover ¥1.3B ($8.5M) in reported transaction value. The earliest filing StockDrifts holds for The Keihin Co., Ltd. is dated 2022-05-18; the most recent is 2025-12-04. 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 +67.60%, 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
2025-12-04	SELL	negotiated	アモーヴァ・アセットマネジメント株式会社	unknown	0	¥2,703	-10.5%	-
2025-12-04	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社	unknown	0	¥2,703	-10.5%	-
2025-12-04	BUY	negotiated	三井住友信託銀行株式会社	strategic	46.0K	¥2,703	-10.5%	¥137M ($886K)
2025-12-04	SELL	acquisition	預金保険機構 Deposit Insurance Corporation of Japan	other	0	¥2,703	-10.5%	¥912M ($5.9M)
2024-09-20	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	11.5K	¥2,004	-49.0%	¥10M ($68K)
2024-09-20	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	287.5K	¥2,004	+49.0%	¥569M ($3.7M)
2024-09-20	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	46.0K	¥2,004	+49.0%	¥92M ($595K)
2024-08-22	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	275.9K	¥2,035	+46.7%	¥562M ($3.6M)
2024-08-22	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	61.1K	¥2,035	+46.7%	¥124M ($802K)
2024-07-19	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	17.0K	¥2,153	-38.7%	¥30M ($191K)
2024-07-19	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	354.5K	¥2,153	-38.7%	¥114M ($735K)
2024-07-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	46.0K	¥2,153	+38.7%	¥99M ($639K)
2023-08-07	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	900	¥1,782	+67.6%	¥41M ($263K)
2023-08-07	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	13.5K	¥1,782	+67.6%	¥10M ($68K)
2023-08-07	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	233.3K	¥1,782	+67.6%	¥411M ($2.7M)
2023-08-07	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	14.5K	¥1,782	+67.6%	¥26M ($167K)
2023-05-09	BUY	negotiated	株式会社神奈川銀行 Kanagawa Bank, Ltd.	strategic	49.0K	¥1,718	+73.8%	¥84M ($543K)
2023-05-09	BUY	negotiated	株式会社横浜銀行 The Bank of Yokohama. Ltd	strategic	325.5K	¥1,718	+73.8%	¥559M ($3.6M)
2023-01-12	SELL	acquisition	預金保険機構 Deposit Insurance Corporation of Japan	other	337.6K	¥1,444	-106.8%	¥93M ($603K)
2022-05-18	BUY	Market Buy	東京海上日動火災保険株式会社 Tokio Marine & Nichido Fire Insurance Co., Ltd.	strategic	482.8K	¥1,385	+115.6%	¥22M ($140K)
2022-05-18	BUY	unknown	東京海上日動火災保険株式会社 Tokio Marine & Nichido Fire Insurance Co., Ltd.	strategic	482.8K	¥1,385	+115.6%	¥22M ($140K)

Frequently asked questions

Who has been buying The Keihin Co., Ltd. stock?: 13 distinct investors have filed 9 disclosed large-shareholding filings in The Keihin Co., Ltd. (9312), most recently on 2025-12-04. 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 The Keihin Co., Ltd. have?: The Keihin Co., Ltd. has 9 buy-side and 7 sell-side disclosures on record, covering ¥1.3B ($8.5M) in total reported value, spanning 2022-05-18 to 2025-12-04.
Where does StockDrifts get The Keihin 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 The Keihin Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.