Who has been buying Shin Maint Holdings Co.,Ltd. stock?

7 distinct investors have filed 10 disclosed large-shareholding filings in Shin Maint Holdings Co.,Ltd. (6086), most recently on 2026-04-20. 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 Shin Maint Holdings Co.,Ltd. have?

Shin Maint Holdings Co.,Ltd. has 10 buy-side and 10 sell-side disclosures on record, covering ¥474M ($3.1M) in total reported value, spanning 2021-05-31 to 2026-04-20.

Where does StockDrifts get Shin Maint Holdings 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.

Shin Maint Holdings Co.,Ltd. 6086

Company

シンメンテホールディングス株式会社Shin Maint Holdings Co.,Ltd.

Investors

Buys

Total Value

¥474M ($3.1M)

Avg Return

+68.82%

Last Filing

2026-04-20

Shin Maint Holdings Co.,Ltd. (6086) has 10 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥474M ($3.1M) in reported transaction value. The earliest filing StockDrifts holds for Shin Maint Holdings Co.,Ltd. is dated 2021-05-31; the most recent is 2026-04-20. 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 +68.82%, 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	acquisition	内藤秀雄 Naito Hideo	activist	4.4M	¥1,041	+1.3%	¥217M ($1.4M)
2026-07-22	SELL	acquisition	内藤秀雄 Naito Hideo	activist	4.4M	¥1,041	-1.3%	¥217M ($1.4M)
2026-04-20	BUY	unknown	株式会社SBI証券	other	109.3K	¥986	+13.0%	¥108M ($695K)
2026-04-20	SELL	unknown	SBIアセットマネジメント株式会社	passive	737.5K	¥986	-13.0%	¥280M ($1.8M)
2026-04-14	SELL	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	988.6K	¥1,041	-5.0%	¥228M ($1.5M)
2026-01-20	SELL	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	1.2M	¥1,218	+19.1%	¥264M ($1.7M)
2025-08-05	SELL	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	1.4M	¥1,118	+11.8%	¥247M ($1.6M)
2025-08-05	BUY	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	1.4M	¥1,118	-11.8%	¥242M ($1.6M)
2025-03-24	SELL	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	820.0K	¥800	-23.3%	¥90M ($581K)
2024-09-13	SELL	unknown	株式会社乃村工藝社 NOMURA Co., Ltd.	other	306.8K	¥817	-20.7%	¥311M ($2.0M)
2024-09-06	SELL	unknown	内藤秀雄 Naito Hideo	activist	2.3M	¥782.5	-26.0%	¥86M ($552K)
2024-03-05	BUY	Market Buy	ブイアイエス・アドバイザーズ・エルピー(VIS Advisors,LP) VIS Advisors,LP	passive	1.1M	¥733	+34.5%	¥81M ($523K)
2023-08-22	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	54.0K	¥629	+56.8%	¥34M ($219K)
2023-08-22	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	510.0K	¥629	+56.8%	¥321M ($2.1M)
2023-08-21	BUY	Market Buy	ブイアイエス・アドバイザーズ・エルピー(VIS Advisors,LP) VIS Advisors,LP	passive	989.9K	¥634	+55.5%	¥71M ($461K)
2023-08-17	BUY	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	932.5K	¥649.5	+51.8%	¥72M ($463K)
2023-05-30	BUY	Market Buy	ブイアイエス・アドバイザーズ・エルピー(VIS Advisors,LP) VIS Advisors,LP	passive	877.9K	¥657.5	+50.0%	¥72M ($464K)
2023-05-30	BUY	Market Buy	ブイアイエス・アドバイザーズ・エルピー(VIS Advisors,LP) VIS Advisors,LP	passive	877.9K	¥657.5	+50.0%	¥72M ($464K)
2022-07-27	BUY	Market Buy	ブイアイエス・アドバイザーズ・エルピー(VIS Advisors,LP) VIS Advisors,LP	passive	767.8K	¥585	+68.5%	¥64M ($413K)
2022-03-08	BUY	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	822.0K	¥440	+124.1%	¥48M ($308K)
2022-02-04	BUY	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	713.4K	¥496.5	+98.6%	¥62M ($403K)
2022-01-24	BUY	Market Buy	アミラル・ジェスチョン(AMIRAL GESTION) AMIRAL GESTION	passive	587.7K	¥514.5	+91.6%	¥302M ($2.0M)
2021-11-10	SELL	unknown	株式会社乃村工藝社 NOMURA Co., Ltd.	other	686.8K	¥650	-51.7%	¥273M ($1.8M)
2021-11-10	BUY	unknown	株式会社乃村工藝社 NOMURA Co., Ltd.	other	686.8K	¥650	+51.7%	¥273M ($1.8M)
2021-10-18	SELL	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	423.4K	¥682.5	-44.5%	¥86M ($553K)
2021-05-31	SELL	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	548.8K	¥467.5	-110.9%	¥53M ($343K)

Frequently asked questions

Who has been buying Shin Maint Holdings Co.,Ltd. stock?: 7 distinct investors have filed 10 disclosed large-shareholding filings in Shin Maint Holdings Co.,Ltd. (6086), most recently on 2026-04-20. 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 Shin Maint Holdings Co.,Ltd. have?: Shin Maint Holdings Co.,Ltd. has 10 buy-side and 10 sell-side disclosures on record, covering ¥474M ($3.1M) in total reported value, spanning 2021-05-31 to 2026-04-20.
Where does StockDrifts get Shin Maint Holdings 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 Shin Maint Holdings Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.