Who has been buying Kotobukiya Co., Ltd. stock?

7 distinct investors have filed 5 disclosed large-shareholding filings in Kotobukiya Co., Ltd. (7809), most recently on 2025-06-06. 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 Kotobukiya Co., Ltd. have?

Kotobukiya Co., Ltd. has 5 buy-side and 14 sell-side disclosures on record, covering ¥1.2B ($7.7M) in total reported value, spanning 2022-08-22 to 2025-06-06.

Where does StockDrifts get Kotobukiya 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.

Kotobukiya Co., Ltd. 7809

Company

株式会社壽屋Kotobukiya Co., Ltd.

Investors

Buys

Total Value

¥1.2B ($7.7M)

Avg Return

-45.94%

Last Filing

2025-06-06

Kotobukiya Co., Ltd. (7809) has 5 disclosed large-shareholding filings and 14 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥1.2B ($7.7M) in reported transaction value. The earliest filing StockDrifts holds for Kotobukiya Co., Ltd. is dated 2022-08-22; the most recent is 2025-06-06. 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 -45.94%, 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
2025-06-06	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	47.0K	¥1,510	+10.3%	¥131M ($846K)
2025-06-06	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	301.6K	¥1,510	+10.3%	¥1M ($8K)
2025-02-21	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	133.3K	¥1,295	-4.6%	¥102M ($660K)
2025-02-21	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	301.6K	¥1,295	-4.6%	¥8M ($50K)
2024-04-09	BUY	Market Buy	株式会社テレビ朝日 TV Asahi Corporation	strategic	1.2M	¥1,971	-31.3%	¥355M ($2.3M)
2023-12-15	SELL	unknown	清水一行 KAZUYUKI SHIMIZU	strategic	930.0K	¥1,544	+12.3%	¥9M ($59K)
2023-12-15	SELL	unknown	清水浩代 Hiroyo Shimizu	strategic	246.0K	¥1,544	+12.3%	¥3M ($17K)
2023-12-15	SELL	unknown	清水一行 KAZUYUKI SHIMIZU	strategic	930.0K	¥1,544	+12.3%	¥9M ($59K)
2023-12-15	SELL	unknown	株式会社いっこう社 Ikkosha Co., Ltd.	activist	57.5K	¥1,544	+12.3%	¥365M ($2.4M)
2023-12-15	SELL	unknown	株式会社いっこう社 Ikkosha Co., Ltd.	activist	57.5K	¥1,544	+12.3%	¥365M ($2.4M)
2023-12-15	SELL	unknown	清水浩代 Hiroyo Shimizu	strategic	246.0K	¥1,544	+12.3%	¥3M ($17K)
2023-12-13	BUY	negotiated	株式会社テレビ朝日 TV Asahi Corporation	strategic	1.1M	¥1,741	-22.2%	¥1.8B ($11.9M)
2023-08-22	SELL	unknown	フィデリティ投信株式会社 FIL Investments (Japan) Limited	other	305.1K	¥2,172	+37.7%	¥258M ($1.7M)
2023-04-21	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	101.6K	¥3,113.02	-56.5%	¥316M ($2.0M)
2023-04-21	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	70.2K	¥3,113.02	-56.5%	¥219M ($1.4M)
2022-11-22	BUY	unknown	フィデリティ投信株式会社 FIL Investments (Japan) Limited	other	140.6K	¥3,676.3	-63.2%	¥517M ($3.3M)
2022-08-22	SELL	unknown	清水一行 KAZUYUKI SHIMIZU	strategic	310.0K	¥1,993.13	+32.1%	¥8M ($50K)
2022-08-22	SELL	unknown	株式会社いっこう社 Ikkosha Co., Ltd.	activist	97.5K	¥1,993.13	+32.1%	¥48M ($309K)
2022-08-22	SELL	unknown	清水浩代 Hiroyo Shimizu	strategic	82.0K	¥1,993.13	+32.1%	¥2M ($14K)

Frequently asked questions

Who has been buying Kotobukiya Co., Ltd. stock?: 7 distinct investors have filed 5 disclosed large-shareholding filings in Kotobukiya Co., Ltd. (7809), most recently on 2025-06-06. 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 Kotobukiya Co., Ltd. have?: Kotobukiya Co., Ltd. has 5 buy-side and 14 sell-side disclosures on record, covering ¥1.2B ($7.7M) in total reported value, spanning 2022-08-22 to 2025-06-06.
Where does StockDrifts get Kotobukiya 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 Kotobukiya Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.