Who has been buying Kyoritsu Maintenance Co., Ltd. stock?

29 distinct investors have filed 115 disclosed large-shareholding filings in Kyoritsu Maintenance Co., Ltd. (9616), most recently on 2026-04-06. 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 Kyoritsu Maintenance Co., Ltd. have?

Kyoritsu Maintenance Co., Ltd. has 115 buy-side and 93 sell-side disclosures on record, covering ¥67.5B ($435.4M) in total reported value, spanning 2021-03-22 to 2026-04-06.

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.

Kyoritsu Maintenance Co., Ltd. 9616

Company

株式会社共立メンテナンスKyoritsu Maintenance Co., Ltd.

Investors

Buys

115

Total Value

¥67.5B ($435.4M)

Avg Return

-6.74%

Last Filing

2026-04-06

Kyoritsu Maintenance Co., Ltd. (9616) has 115 disclosed large-shareholding filings and 93 disclosed disposals on record, filed by 29 distinct investors. Together those filings cover ¥67.5B ($435.4M) in reported transaction value. The earliest filing StockDrifts holds for Kyoritsu Maintenance Co., Ltd. is dated 2021-03-22; the most recent is 2026-04-06. Across these filings the average return since disclosure is -6.74%, 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
2026-08-21	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	6.6M	¥3,482	-6.4%	¥23.0B ($148.4M)
2026-04-06	SELL	Market Buy	三井住友トラスト・アセットマネジメント株式会社	other	2.0M	¥2,510	-29.8%	¥687M ($4.4M)
2026-04-06	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社	other	2.4M	¥2,510	+29.8%	¥321M ($2.1M)
2026-03-06	SELL	Market Buy	株式会社三井住友銀行	other	1.6M	¥2,581.5	-26.2%	¥660M ($4.3M)
2026-03-06	SELL	Market Buy	SMBC日興証券株式会社	other	831.1K	¥2,581.5	-26.2%	¥212M ($1.4M)
2026-03-06	SELL	Market Buy	三井住友DSアセットマネジメント株式会社	passive	1.1M	¥2,581.5	-26.2%	¥1.9B ($12.0M)
2026-01-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	2.2M	¥2,915	-11.8%	¥683M ($4.4M)
2026-01-21	BUY	unknown	アモーヴァ・アセットマネジメント株式会社	other	2.2M	¥2,915	+11.8%	¥76M ($490K)
2025-12-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	2.5M	¥2,860	-13.9%	¥3.0B ($19.1M)
2025-12-19	BUY	unknown	アモーヴァ・アセットマネジメント株式会社	other	2.2M	¥2,860	+13.9%	¥149M ($961K)
2025-10-06	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	3.4M	¥3,170	-2.8%	¥618M ($4.0M)
2025-10-06	SELL	unknown	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	2.1M	¥3,170	-2.8%	¥81M ($520K)
2025-10-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	71.9K	¥3,170	-2.8%	¥5.0B ($32.4M)
2025-10-06	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.3M	¥3,170	-2.8%	¥54M ($347K)
2025-10-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	889.7K	¥3,170	+2.8%	¥672M ($4.3M)
2025-09-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.6M	¥3,312	+1.6%	¥5.8B ($37.7M)
2025-09-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	636.1K	¥3,312	+1.6%	¥211M ($1.4M)
2025-09-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.2M	¥3,312	-1.6%	¥3.7B ($23.8M)
2025-09-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	3.4M	¥3,296	+1.1%	¥2.3B ($14.9M)
2025-09-19	BUY	unknown	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	2.0M	¥3,296	-1.1%	¥1.2B ($7.8M)
2025-09-05	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	697.3K	¥3,332	-	-
2025-09-05	SELL	unknown	ユービーエス・エイ・ジー(銀行) UBS AG	other	408.3K	¥3,332	+2.2%	¥5.2B ($33.3M)
2025-09-05	BUY	unknown	UBS Switzerland AG	other	71.6K	¥3,332	-	-
2025-09-05	SELL	unknown	UBS Asset ManagementLtd UK	other	630.4K	¥3,332	+2.2%	¥26M ($171K)
2025-09-05	BUY	unknown	UBSアセット・マネジメント(ヨーロッパ)エス・エイ UBS Asset Management (Europe) S.A.	other	1.5M	¥3,332	-2.2%	¥212M ($1.4M)
2025-09-05	BUY	unknown	UBS Fund ManagementAG Switzerland	other	99.5K	¥3,332	-	-
2025-09-05	SELL	Market Buy	NOMURA SINGAPORE LIMITED Nomura Singapore Limited	other	74.2K	¥3,332	+2.2%	¥53M ($342K)
2025-09-05	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.4M	¥3,332	-2.2%	¥583M ($3.8M)
2025-09-05	BUY	Market Buy	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	unknown	0	¥3,332	-	-
2025-09-05	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.1M	¥3,332	-2.2%	¥132M ($855K)
2025-08-22	BUY	unknown	ユービーエス・エイ・ジー(銀行) UBS AG	other	2.0M	¥3,394	-4.0%	¥6.6B ($42.9M)
2025-08-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	676.4K	¥3,394	-4.0%	¥5.4B ($34.8M)
2025-08-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	690.4K	¥3,394	+4.0%	¥5.0B ($32.1M)
2025-08-22	SELL	unknown	NOMURA SINGAPORE LIMITED Nomura Singapore Limited	other	89.4K	¥3,394	+4.0%	¥53M ($344K)
2025-08-22	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.2M	¥3,394	-4.0%	¥3.8B ($24.6M)
2025-08-22	BUY	unknown	ノムラセキュリテーズインターナショナル NOMURA SECURITIES INTERNATIONAL,Inc.	other	0	¥3,394	-	-
2025-08-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	416.5K	¥3,394	+4.0%	¥4.8B ($30.8M)
2025-08-22	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	2.2M	¥3,394	-4.0%	¥162M ($1.0M)
2025-08-22	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	63.5K	¥3,394	+4.0%	¥108M ($697K)
2025-08-22	BUY	unknown	UBS Switzerland AG	other	71.6K	¥3,394	-4.0%	¥243M ($1.6M)
2025-08-22	BUY	unknown	UBS Asset ManagementLtd UK	other	630.4K	¥3,394	-4.0%	¥2.1B ($13.8M)
2025-08-22	BUY	unknown	UBSアセット・マネジメント(ヨーロッパ)エス・エイ UBS Asset Management (Europe) S.A.	other	1.5M	¥3,394	-4.0%	¥4.9B ($31.9M)
2025-08-22	BUY	unknown	UBS Fund ManagementAG Switzerland	other	98.5K	¥3,394	-4.0%	¥334M ($2.2M)
2025-08-22	BUY	unknown	みずほインターナショナル Mizuho International plc	unknown	0	¥3,394	-	-
2025-08-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.0M	¥3,394	-4.0%	¥27M ($172K)
2025-08-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	676.4K	¥3,561	-8.5%	¥2.8B ($18.1M)
2025-08-07	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	2.2M	¥3,561	-8.5%	¥894M ($5.8M)
2025-08-07	SELL	Market Buy	NOMURA SINGAPORE LIMITED Nomura Singapore Limited	other	105.3K	¥3,561	+8.5%	¥140M ($901K)
2025-08-07	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.1M	¥3,561	-8.5%	¥1.1B ($7.2M)
2025-08-07	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.0M	¥3,561	+8.5%	¥56M ($360K)

Showing the 50 most recent of 200 filings.

Frequently asked questions

Who has been buying Kyoritsu Maintenance Co., Ltd. stock?: 29 distinct investors have filed 115 disclosed large-shareholding filings in Kyoritsu Maintenance Co., Ltd. (9616), most recently on 2026-04-06. 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 Kyoritsu Maintenance Co., Ltd. have?: Kyoritsu Maintenance Co., Ltd. has 115 buy-side and 93 sell-side disclosures on record, covering ¥67.5B ($435.4M) in total reported value, spanning 2021-03-22 to 2026-04-06.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.