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

6 distinct investors have filed 8 disclosed large-shareholding filings in PLANT Co.,Ltd. (7646), most recently on 2026-01-29. 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 PLANT Co.,Ltd. have?

PLANT Co.,Ltd. has 8 buy-side and 12 sell-side disclosures on record, covering ¥9.6B ($61.7M) in total reported value, spanning 2023-12-12 to 2026-01-29.

Where does StockDrifts get PLANT 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.

PLANT Co.,Ltd. 7646

Company

株式会社PLANTPLANT Co.,Ltd.

Investors

Buys

Total Value

¥9.6B ($61.7M)

Avg Return

+13.71%

Last Filing

2026-01-29

PLANT Co.,Ltd. (7646) has 8 disclosed large-shareholding filings and 12 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥9.6B ($61.7M) in reported transaction value. The earliest filing StockDrifts holds for PLANT Co.,Ltd. is dated 2023-12-12; the most recent is 2026-01-29. 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 +13.71%, 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
2026-01-29	BUY	Market Buy	三ッ田弘美	activist	3.2K	¥2,000	+6.0%	¥6M ($39K)
2026-01-29	BUY	unknown	三ッ田弘美	activist	3.2K	¥2,000	+6.0%	¥6M ($39K)
2026-01-29	SELL	unknown	三ッ田勝規	unknown	0	¥2,000	+6.0%	-
2026-01-29	BUY	unknown	有限会社ワイ・ティ・エー	activist	2.5M	¥2,000	-6.0%	¥4.6B ($30.0M)
2026-01-29	SELL	unknown	三ッ田泰二	activist	200.0K	¥2,000	+6.0%	¥376M ($2.4M)
2026-01-29	SELL	unknown	三ッ田佳史	activist	200.0K	¥2,000	+6.0%	¥376M ($2.4M)
2026-01-29	SELL	unknown	三ッ田美代子	activist	115.1K	¥2,000	+6.0%	¥216M ($1.4M)
2026-01-29	BUY	Market Buy	有限会社ワイ・ティ・エー	activist	2.5M	¥2,000	-6.0%	¥4.6B ($30.0M)
2026-01-29	SELL	Market Buy	三ッ田泰二	activist	200.0K	¥2,000	+6.0%	¥376M ($2.4M)
2026-01-29	SELL	Market Buy	三ッ田佳史	activist	200.0K	¥2,000	+6.0%	¥376M ($2.4M)
2026-01-29	SELL	Market Buy	三ッ田美代子	activist	115.1K	¥2,000	+6.0%	¥216M ($1.4M)
2026-01-29	SELL	Market Buy	三ッ田勝規	unknown	0	¥2,000	+6.0%	-
2023-12-12	BUY	negotiated	三ッ田勝規 MASAMI MITTA	activist	330.2K	¥1,563	+20.3%	¥89M ($577K)
2023-12-12	BUY	Market Buy	三ッ田勝規 MASAMI MITTA	activist	330.2K	¥1,563	+20.3%	¥89M ($577K)
2023-12-12	BUY	negotiated	三ッ田弘美 Hiromi Mita	activist	3.2K	¥1,563	+20.3%	¥5M ($32K)
2023-12-12	BUY	negotiated	有限会社ワイ・ティ・エー Y.T.A. Ltd.	activist	2.0M	¥1,563	+20.3%	¥141M ($912K)
2023-12-12	SELL	negotiated	三ッ田泰二 Taiji Mita	activist	200.0K	¥1,563	-20.3%	¥12M ($78K)
2023-12-12	SELL	negotiated	三ッ田佳史 Yoshifumi Mita	activist	200.0K	¥1,563	-20.3%	¥12M ($78K)
2023-12-12	BUY	negotiated	三ッ田美代子 Miyoko Mita	activist	230.1K	¥1,563	+20.3%	¥62M ($398K)
2023-12-12	BUY	Market Buy	三ッ田弘美 Hiromi Mita	activist	3.2K	¥1,563	+20.3%	¥5M ($32K)
2023-12-12	BUY	Market Buy	有限会社ワイ・ティ・エー Y.T.A. Ltd.	activist	2.0M	¥1,563	+20.3%	¥141M ($912K)
2023-12-12	SELL	Market Buy	三ッ田泰二 Taiji Mita	activist	200.0K	¥1,563	-20.3%	¥12M ($78K)
2023-12-12	SELL	Market Buy	三ッ田佳史 Yoshifumi Mita	activist	200.0K	¥1,563	-20.3%	¥12M ($78K)
2023-12-12	BUY	Market Buy	三ッ田美代子 Miyoko Mita	activist	230.1K	¥1,563	+20.3%	¥62M ($398K)

Frequently asked questions

Who has been buying PLANT Co.,Ltd. stock?: 6 distinct investors have filed 8 disclosed large-shareholding filings in PLANT Co.,Ltd. (7646), most recently on 2026-01-29. 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 PLANT Co.,Ltd. have?: PLANT Co.,Ltd. has 8 buy-side and 12 sell-side disclosures on record, covering ¥9.6B ($61.7M) in total reported value, spanning 2023-12-12 to 2026-01-29.
Where does StockDrifts get PLANT 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 PLANT Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.