Who has been buying Kasai Kogyo Co., Ltd. stock?

10 distinct investors have filed 12 disclosed large-shareholding filings in Kasai Kogyo Co., Ltd. (7256), most recently on 2026-04-27. 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 Kasai Kogyo Co., Ltd. have?

Kasai Kogyo Co., Ltd. has 12 buy-side and 4 sell-side disclosures on record, covering ¥2.6B ($17.0M) in total reported value, spanning 2023-02-07 to 2026-04-27.

Where does StockDrifts get Kasai Kogyo 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.

Kasai Kogyo Co., Ltd. 7256

Company

河西工業株式会社Kasai Kogyo Co., Ltd.

Investors

Buys

Total Value

¥2.6B ($17.0M)

Avg Return

+65.43%

Last Filing

2026-04-27

Kasai Kogyo Co., Ltd. (7256) has 12 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥2.6B ($17.0M) in reported transaction value. The earliest filing StockDrifts holds for Kasai Kogyo Co., Ltd. is dated 2023-02-07; the most recent is 2026-04-27. 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 +65.43%, 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
2026-06-16	BUY	Market Buy	株式会社イクヨ IKUYO CO.,LTD.	passive	5.3M	¥370	+12.2%	¥347M ($2.2M)
2026-04-27	BUY	Market Buy	株式会社イクヨ IKUYO CO.,LTD.	passive	3.1M	¥381	+5.0%	¥1.2B ($7.5M)
2026-04-27	BUY	Market Buy	株式会社イクヨ IKUYO CO.,LTD.	passive	3.1M	¥381	+5.0%	¥1.2B ($7.5M)
2026-04-27	BUY	Market Buy	株式会社イクヨ IKUYO CO.,LTD.	passive	4.3M	¥381	+5.0%	¥478M ($3.1M)
2024-11-11	BUY	negotiated	長瀬産業株式会社 NAGASE & CO., LTD.	unknown	5.4M	¥137	+105.8%	¥109M ($705K)
2024-11-11	BUY	Market Buy	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	44.3K	¥137	+105.8%	¥598M ($3.9M)
2024-11-11	BUY	Market Buy	長瀬産業株式会社 NAGASE & CO., LTD.	other	11.2M	¥137	+105.8%	¥689M ($4.4M)
2024-11-11	SELL	Market Buy	株式会社りそな銀行 Resona Bank, Limited.	activist	2.0M	¥137	-105.8%	¥40M ($256K)
2024-11-11	BUY	negotiated	日産自動車株式会社 Nissan Motor Co., Ltd.	activist	5.8M	¥137	+105.8%	¥798M ($5.2M)
2024-05-16	SELL	negotiated	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	145.9K	¥205	-37.6%	¥56M ($361K)
2024-05-16	BUY	negotiated	株式会社りそな銀行 Resona Bank, Limited.	activist	2.0M	¥205	+37.6%	¥406M ($2.6M)
2024-05-16	BUY	unknown	長瀬産業株式会社 NAGASE & CO., LTD.	other	5.4M	¥205	+37.6%	¥1.1B ($7.1M)
2024-05-16	BUY	unknown	長瀬産業株式会社 NAGASE & CO., LTD.	other	5.4M	¥205	+37.6%	¥1.1B ($7.1M)
2024-02-22	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	9.8K	¥230	+22.6%	¥178M ($1.2M)
2024-02-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	921.1K	¥230	+22.6%	¥212M ($1.4M)
2024-02-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	1.5M	¥188	+50.0%	¥276M ($1.8M)
2024-02-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	921.1K	¥188	+50.0%	¥173M ($1.1M)
2024-01-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	853.3K	¥193	-46.1%	¥135M ($871K)
2024-01-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	921.1K	¥193	+46.1%	¥178M ($1.1M)
2023-12-22	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	1.6M	¥191	+47.6%	¥297M ($1.9M)
2023-12-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	921.1K	¥191	+47.6%	¥176M ($1.1M)
2023-02-07	SELL	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	141.8K	¥155	-81.9%	¥4M ($24K)
2023-02-07	BUY	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	506.7K	¥155	+81.9%	¥79M ($507K)
2023-02-07	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	59.9K	¥155	+81.9%	¥7M ($45K)

Frequently asked questions

Who has been buying Kasai Kogyo Co., Ltd. stock?: 10 distinct investors have filed 12 disclosed large-shareholding filings in Kasai Kogyo Co., Ltd. (7256), most recently on 2026-04-27. 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 Kasai Kogyo Co., Ltd. have?: Kasai Kogyo Co., Ltd. has 12 buy-side and 4 sell-side disclosures on record, covering ¥2.6B ($17.0M) in total reported value, spanning 2023-02-07 to 2026-04-27.
Where does StockDrifts get Kasai Kogyo 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 Kasai Kogyo Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.