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

8 distinct investors have filed 0 disclosed large-shareholding filings in Cominix Co.,Ltd. (3173), most recently on 2026-02-20. 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 Cominix Co.,Ltd. have?

Cominix Co.,Ltd. has 0 buy-side and 18 sell-side disclosures on record, spanning 2021-04-02 to 2026-02-20.

Where does StockDrifts get Cominix 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.

Cominix Co.,Ltd. 3173

Company

株式会社CominixCominix Co.,Ltd.

Investors

Buys

Total Value

—

Avg Return

—

Last Filing

2026-02-20

Cominix Co.,Ltd. (3173) has 0 disclosed large-shareholding filings and 18 disclosed disposals on record, filed by 8 distinct investors. The earliest filing StockDrifts holds for Cominix Co.,Ltd. is dated 2021-04-02; the most recent is 2026-02-20. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan).

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-02-20	SELL	unknown	柳川妙子	activist	183.6K	¥992	+7.6%	¥168M ($1.1M)
2026-02-20	SELL	unknown	柳川重昌	activist	172.0K	¥992	+7.6%	¥158M ($1.0M)
2026-02-20	BUY	unknown	有限会社柳川住宅	activist	350.0K	¥992	+7.6%	¥321M ($2.1M)
2026-02-20	BUY	unknown	柳川修一	activist	425.6K	¥992	+7.6%	¥390M ($2.5M)
2026-02-20	SELL	unknown	柳川妙子	activist	183.6K	¥992	+7.6%	¥168M ($1.1M)
2026-02-20	SELL	unknown	柳川重昌	activist	172.0K	¥992	+7.6%	¥158M ($1.0M)
2026-02-20	BUY	unknown	有限会社柳川住宅	activist	350.0K	¥992	+7.6%	¥321M ($2.1M)
2026-02-20	BUY	unknown	柳川修一	activist	425.6K	¥992	+7.6%	¥390M ($2.5M)
2025-04-01	BUY	unknown	柳川修一 SYUICHI YANAGAWA	activist	425.6K	¥875	+4.8%	¥372M ($2.4M)
2023-04-06	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥756	+21.3%	¥187M ($1.2M)
2023-04-06	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	306.1K	¥756	-21.3%	¥54M ($348K)
2023-04-06	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	94.3K	¥756	-21.3%	¥160M ($1.0M)
2023-04-06	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥756	+21.3%	¥187M ($1.2M)
2023-01-05	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥729	+25.8%	¥180M ($1.2M)
2023-01-05	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	377.6K	¥729	-25.8%	¥26M ($165K)
2022-10-04	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥716	+28.1%	¥177M ($1.1M)
2022-10-04	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	412.6K	¥716	-28.1%	¥3M ($22K)
2022-08-19	BUY	unknown	大阪ビジネスプラニング有限会社 Osaka Business Planning Co., Ltd.	activist	492.0K	¥720	+27.4%	¥354M ($2.3M)
2022-08-19	SELL	unknown	林祐介 YUSUKE HAYASHI	activist	871.2K	¥720	-27.4%	¥42M ($268K)
2022-07-27	BUY	unknown	柳川修一 SYUICHI YANAGAWA	activist	425.6K	¥720	+27.4%	¥306M ($2.0M)
2022-07-27	BUY	unknown	柳川修一 SYUICHI YANAGAWA	activist	425.6K	¥720	+27.4%	¥306M ($2.0M)
2022-07-05	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥723	+26.8%	¥179M ($1.2M)
2022-07-05	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	417.6K	¥723	-26.8%	¥3M ($22K)
2022-05-13	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥730	+25.6%	¥180M ($1.2M)
2022-05-13	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	442.6K	¥730	-25.6%	¥52M ($333K)
2022-04-04	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥728	+26.0%	¥180M ($1.2M)
2022-04-04	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥728	+26.0%	¥180M ($1.2M)
2022-04-04	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	422.6K	¥728	-26.0%	¥66M ($426K)
2022-04-04	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	422.6K	¥728	-26.0%	¥15M ($94K)
2022-01-05	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥736	+24.6%	¥182M ($1.2M)
2022-01-05	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	512.9K	¥736	-24.6%	¥13M ($82K)
2021-10-04	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥729	+25.8%	¥180M ($1.2M)
2021-10-04	BUY	unknown	柳川歩 Ayumu Yanagawa	activist	247.1K	¥729	+25.8%	¥180M ($1.2M)
2021-10-04	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	530.1K	¥729	-25.8%	¥23M ($149K)
2021-10-04	SELL	unknown	柳川十糸久 Yanagawa Toshihisa	activist	530.1K	¥729	-25.8%	¥23M ($149K)
2021-07-06	BUY	negotiated	柳川歩 Ayumu Yanagawa	activist	247.1K	¥744	+23.3%	¥184M ($1.2M)
2021-07-06	BUY	negotiated	柳川歩 Ayumu Yanagawa	activist	247.1K	¥744	+23.3%	¥184M ($1.2M)
2021-07-06	SELL	negotiated	柳川十糸久 Yanagawa Toshihisa	activist	561.9K	¥744	-23.3%	¥16M ($102K)
2021-07-06	SELL	negotiated	柳川十糸久 Yanagawa Toshihisa	activist	561.9K	¥744	-23.3%	¥16M ($102K)
2021-04-02	BUY	negotiated	柳川歩 Ayumu Yanagawa	activist	247.1K	¥646.158	+41.9%	¥160M ($1.0M)
2021-04-02	BUY	negotiated	柳川十糸久 Yanagawa Toshihisa	activist	583.3K	¥646.158	+41.9%	¥377M ($2.4M)

Frequently asked questions

Who has been buying Cominix Co.,Ltd. stock?: 8 distinct investors have filed 0 disclosed large-shareholding filings in Cominix Co.,Ltd. (3173), most recently on 2026-02-20. 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 Cominix Co.,Ltd. have?: Cominix Co.,Ltd. has 0 buy-side and 18 sell-side disclosures on record, spanning 2021-04-02 to 2026-02-20.
Where does StockDrifts get Cominix 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 Cominix Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.