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

7 distinct investors have filed 7 disclosed large-shareholding filings in Seihyo Co., Ltd. (2872), most recently on 2025-07-07. 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 Seihyo Co., Ltd. have?

Seihyo Co., Ltd. has 7 buy-side and 6 sell-side disclosures on record, covering ¥1.2B ($7.7M) in total reported value, spanning 2022-04-27 to 2025-07-07.

Where does StockDrifts get Seihyo 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.

Seihyo Co., Ltd. 2872

Company

株式会社セイヒョーSeihyo Co., Ltd.

Investors

Buys

Total Value

¥1.2B ($7.7M)

Avg Return

-1.26%

Last Filing

2025-07-07

Seihyo Co., Ltd. (2872) has 7 disclosed large-shareholding filings and 6 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 Seihyo Co., Ltd. is dated 2022-04-27; the most recent is 2025-07-07. 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 -1.26%, 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
2026-07-07	SELL	Market Buy	明治安田アセットマネジメント株式会社 Meiji Yasuda Asset Management Company Ltd.	passive	60.5K	¥2,019	+1.4%	¥44M ($285K)
2025-07-07	SELL	Market Buy	明治安田アセットマネジメント株式会社 Meiji Yasuda Asset Management Company Ltd.	passive	82.3K	¥2,325	+3.9%	¥46M ($299K)
2024-07-02	BUY	Market Buy	明治安田アセットマネジメント株式会社 Meiji Yasuda Asset Management Company Ltd.	passive	102.3K	¥2,550	-12.3%	¥261M ($1.7M)
2024-03-04	SELL	unknown	株式会社Wealth Brothers Wealth Brothers Inc.	unknown	0	¥1,765	-26.6%	¥274M ($1.8M)
2024-03-01	BUY	Market Buy	株式会社ジャルコ JALCO CO.,LTD.	passive	155.0K	¥1,786	+25.1%	¥277M ($1.8M)
2024-03-01	SELL	Market Buy	株式会社ジャルコ JALCO CO.,LTD.	passive	0	¥1,786	-25.1%	¥277M ($1.8M)
2023-11-07	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	73.2K	¥1,891	-18.2%	¥62M ($397K)
2023-09-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	400	¥2,535	-11.8%	¥78M ($501K)
2023-09-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	105.8K	¥2,535	-11.8%	¥265M ($1.7M)
2023-08-08	BUY	Market Buy	株式会社和田商会 wadashoukai	passive	69.0K	¥3,530	-36.7%	¥84M ($543K)
2023-08-08	BUY	Market Buy	株式会社和田商会 wadashoukai	passive	71.0K	¥3,530	-36.7%	¥77M ($498K)
2023-08-08	BUY	Market Buy	株式会社和田商会 wadashoukai	passive	69.0K	¥3,530	-36.7%	¥84M ($543K)
2023-08-08	BUY	Market Buy	株式会社和田商会 wadashoukai	passive	71.0K	¥3,530	-36.7%	¥77M ($498K)
2023-08-04	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	129.2K	¥3,560	-37.2%	¥460M ($3.0M)
2023-08-04	BUY	Market Buy	株式会社和田商会 wadashoukai	passive	69.0K	¥3,560	-37.2%	¥85M ($547K)
2023-08-04	BUY	Market Buy	株式会社和田商会 wadashoukai	passive	69.0K	¥3,560	-37.2%	¥85M ($547K)
2023-08-04	BUY	Market Buy	株式会社和田商会 wadashoukai	passive	71.0K	¥3,560	-37.2%	¥78M ($503K)
2023-08-04	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.8K	¥3,560	-37.2%	¥6M ($41K)
2023-08-04	BUY	Market Buy	株式会社和田商会 wadashoukai	passive	71.0K	¥3,560	-37.2%	¥78M ($503K)
2023-07-25	SELL	private	株式会社Wealth Brothers Wealth Brothers Inc.	strategic	155.0K	¥4,125	+45.8%	¥607M ($3.9M)
2023-07-25	BUY	private	株式会社Wealth Brothers Wealth Brothers Inc.	strategic	155.0K	¥4,125	-45.8%	¥607M ($3.9M)
2022-10-13	SELL	unknown	大協リース株式会社 Daikyo Lease CO.,LTD	strategic	60.5K	¥3,236.34	+30.9%	¥55M ($355K)
2022-10-13	BUY	unknown	大協リース株式会社代表取締役社長村山栄一 Daikyo Lease CO.,LTD	strategic	60.5K	¥3,236.34	-30.9%	¥55M ($355K)
2022-04-27	BUY	private	株式会社Wealth Brothers Wealth Brothers Inc.	strategic	99.0K	¥1,266.54	+76.5%	¥125M ($809K)

Frequently asked questions

Who has been buying Seihyo Co., Ltd. stock?: 7 distinct investors have filed 7 disclosed large-shareholding filings in Seihyo Co., Ltd. (2872), most recently on 2025-07-07. 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 Seihyo Co., Ltd. have?: Seihyo Co., Ltd. has 7 buy-side and 6 sell-side disclosures on record, covering ¥1.2B ($7.7M) in total reported value, spanning 2022-04-27 to 2025-07-07.
Where does StockDrifts get Seihyo 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 Seihyo Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.