Who has been buying Muraki Corporation stock?

14 distinct investors have filed 29 disclosed large-shareholding filings in Muraki Corporation (7477), most recently on 2026-04-13. 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 Muraki Corporation have?

Muraki Corporation has 29 buy-side and 10 sell-side disclosures on record, covering ¥3.1B ($19.8M) in total reported value, spanning 2021-05-28 to 2026-04-13.

Where does StockDrifts get Muraki Corporation 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.

Muraki Corporation 7477

Company

ムラキ株式会社Muraki Corporation

Investors

Buys

Total Value

¥3.1B ($19.8M)

Avg Return

+46.92%

Last Filing

2026-04-13

Muraki Corporation (7477) has 29 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 14 distinct investors. Together those filings cover ¥3.1B ($19.8M) in reported transaction value. The earliest filing StockDrifts holds for Muraki Corporation is dated 2021-05-28; the most recent is 2026-04-13. 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 +46.92%, 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
2026-07-22	BUY	Market Buy	株式会社イクヨ IKUYO CO.,LTD.	engagement	250.0K	¥1,688	-11.1%	¥422M ($2.7M)
2026-07-02	SELL	Market Buy	Blue Goats Capital株式会社 Blue Goats Capital, Inc.	passive	73.1K	¥1,871	+15.2%	¥56M ($362K)
2026-04-13	BUY	Market Buy	Blue Goats Capital株式会社 Blue Goats Capital, Inc.	passive	103.1K	¥1,895	+2.3%	¥195M ($1.3M)
2026-01-29	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	0	¥1,849	+13.0%	¥462M ($3.0M)
2026-01-29	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	0	¥1,849	+13.0%	¥462M ($3.0M)
2026-01-27	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	0	¥1,854	+12.7%	¥464M ($3.0M)
2026-01-27	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	0	¥1,854	+12.7%	¥464M ($3.0M)
2026-01-27	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	0	¥1,854	+12.7%	¥464M ($3.0M)
2026-01-27	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	0	¥1,854	+12.7%	¥464M ($3.0M)
2026-01-27	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	0	¥1,854	+12.7%	¥464M ($3.0M)
2026-01-27	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	0	¥1,854	+12.7%	¥464M ($3.0M)
2026-01-27	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	0	¥1,854	+12.7%	¥464M ($3.0M)
2026-01-23	BUY	Market Buy	株式会社イクヨ IKUYO CO.,LTD.	engagement	250.0K	¥1,878	+11.2%	¥470M ($3.0M)
2025-06-11	BUY	unknown	ムラキ取引先持株会理事長早馬義光 MURAKI TORIHIKISAKI MOTIKABUKAI Yoshimitu Hayama	other	0	¥1,387	+50.6%	¥123M ($793K)
2025-06-11	SELL	unknown	ムラキ取引先持株会理事長早馬義光 MURAKI TORIHIKISAKI MOTIKABUKAI Yoshimitu Hayama	other	0	¥1,387	-50.6%	¥123M ($793K)
2025-06-11	BUY	unknown	ムラキ取引先持株会理事長宮治友博 MURAKI TORIHIKISAKI MOCHIKABUKAI Miyaji Tomohiro	other	97.6K	¥1,387	+50.6%	¥135M ($873K)
2025-06-11	BUY	unknown	ムラキ取引先持株会理事長宮治友博 MURAKI TORIHIKISAKI MOCHIKABUKAI Miyaji Tomohiro	other	97.6K	¥1,387	+50.6%	¥135M ($873K)
2025-02-20	BUY	Market Buy	合同会社CYGNUS 代表社員一般社団法人SPE 業務執行者江木洋介 GOUDOUGAISHA CYGNUS	passive	250.0K	¥1,381	+51.3%	¥345M ($2.2M)
2025-02-19	SELL	unknown	芙蓉土地建物株式会社 FUYO Co.Ltd	unknown	0	¥1,399	-49.3%	¥350M ($2.3M)
2024-03-26	BUY	Market Buy	ムラキ取引先持株会理事長早馬義光 MURAKI TORIHIKISAKI MOTIKABUKAI Yoshimitu Hayama	other	88.6K	¥1,558	+34.1%	¥23M ($151K)
2024-03-26	BUY	unknown	ムラキ取引先持株会理事長早馬義光 MURAKI TORIHIKISAKI MOTIKABUKAI Yoshimitu Hayama	other	88.6K	¥1,558	+34.1%	¥23M ($151K)
2024-01-19	BUY	unknown	株式会社マネジメント・サーベイ Management Suvey	other	88.5K	¥2,009	+4.0%	¥178M ($1.1M)
2023-11-20	BUY	Market Buy	有限会社ドリーム・ワークス LLC.Dream works	passive	180.0K	¥1,994	+4.8%	¥359M ($2.3M)
2023-10-27	SELL	unknown	深山信次 Shinji Miyama	unknown	65.0K	¥1,600	-30.6%	¥104M ($671K)
2023-10-19	BUY	acquisition	深山信次 Shinji Miyama	unknown	130.0K	¥2,139	-2.3%	¥278M ($1.8M)
2023-10-11	SELL	unknown	株式会社マネジメント・サーベイ Management Survey	unknown	270.7K	¥2,084	-0.2%	¥63M ($405K)
2023-10-11	BUY	unknown	ON&ON合同会社 ON&ON LLC	other	30.0K	¥2,084	+0.2%	¥62M ($403K)
2023-10-11	BUY	unknown	中西祐介 Yusuke Nakanishi	unknown	50.0K	¥2,084	+0.2%	¥42M ($269K)
2023-10-11	BUY	unknown	ON&ON合同会社 ON&ON LLC	unknown	30.0K	¥2,084	+0.2%	¥63M ($403K)
2023-10-11	BUY	unknown	中西祐介 Yusuke Nakanishi	unknown	30.0K	¥2,084	+0.2%	¥63M ($403K)
2023-10-11	BUY	unknown	ON&ON合同会社 ON&ON LLC	unknown	30.0K	¥2,084	+0.2%	¥63M ($403K)
2023-10-11	BUY	unknown	ON&ON合同会社 ON&ON LLC	unknown	30.0K	¥2,084	+0.2%	¥63M ($403K)
2023-10-11	BUY	unknown	中西祐介 Yusuke Nakanishi	passive	30.0K	¥2,084	+0.2%	¥62M ($403K)
2023-10-11	SELL	unknown	株式会社マネジメント・サーベイ Management Survey	unknown	240.0K	¥2,084	-0.2%	¥64M ($411K)
2023-10-11	BUY	unknown	株式会社マネジメント・サーベイ Management Survey	unknown	109.3K	¥2,084	+0.2%	¥223M ($1.4M)
2023-10-11	SELL	unknown	株式会社マネジメント・サーベイ Management Survey	unknown	88.5K	¥2,084	-0.2%	¥44M ($281K)
2023-10-10	BUY	Market Buy	株式会社マネジメント・サーべイ Management Suvey	other	300.7K	¥2,584	-19.2%	¥777M ($5.0M)
2023-10-10	BUY	unknown	株式会社マネジメント・サーベイ Management Suvey	unknown	300.7K	¥2,584	-19.2%	¥777M ($5.0M)
2023-10-10	BUY	unknown	株式会社マネジメント・サーベイ Management Suvey	unknown	300.7K	¥2,584	-19.2%	¥777M ($5.0M)
2023-01-18	BUY	Market Buy	株式会社マネジメント・サーベイ Management Survey	passive	298.6K	¥1,370	+52.5%	¥409M ($2.6M)
2023-01-18	BUY	unknown	株式会社マネジメント・サーベイ Management Survey	other	300.7K	¥1,370	+52.5%	¥3M ($19K)
2023-01-18	BUY	unknown	株式会社マネジメント・サーベイ Management Survey	other	300.7K	¥1,370	+52.5%	¥3M ($19K)
2023-01-18	BUY	Market Buy	株式会社マネジメント・サーベイ Management Survey	passive	298.6K	¥1,370	+52.5%	¥409M ($2.6M)
2023-01-18	BUY	Market Buy	株式会社マネジメント・サーベイ Management Survey	passive	298.6K	¥1,370	+52.5%	¥409M ($2.6M)
2023-01-13	BUY	unknown	水口翼 Tsubasa Mizuguchi	unknown	4.0K	¥1,379	+51.5%	¥6M ($36K)
2023-01-13	SELL	unknown	DXエンゲージメントパートナーズ合同会社 DX Engagement Partners LLC	unknown	0	¥1,379	-51.5%	¥4M ($27K)
2022-08-25	BUY	Market Buy	水口翼 Tsubasa Mizuguchi	activist	4.0K	¥1,626	+28.5%	¥7M ($42K)
2022-08-25	BUY	Market Buy	水口翼 Tsubasa Mizuguchi	activist	4.0K	¥1,626	+28.5%	¥7M ($42K)
2022-08-25	BUY	Market Buy	DXエンゲージメントパートナーズ合同会社 DX Engagement Partners LLC	activist	295.1K	¥1,626	+28.5%	¥480M ($3.1M)
2022-08-25	BUY	Market Buy	DXエンゲージメントパートナーズ合同会社 DX Engagement Partners LLC	activist	298.6K	¥1,626	+28.5%	¥6M ($37K)

Showing the 50 most recent of 77 filings.

Frequently asked questions

Who has been buying Muraki Corporation stock?: 14 distinct investors have filed 29 disclosed large-shareholding filings in Muraki Corporation (7477), most recently on 2026-04-13. 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 Muraki Corporation have?: Muraki Corporation has 29 buy-side and 10 sell-side disclosures on record, covering ¥3.1B ($19.8M) in total reported value, spanning 2021-05-28 to 2026-04-13.
Where does StockDrifts get Muraki Corporation 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 Muraki Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.