Who has been buying Kyoei Security Service Co., Ltd. stock?

4 distinct investors have filed 8 disclosed large-shareholding filings in Kyoei Security Service Co., Ltd. (7058), most recently on 2025-09-29. 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 Kyoei Security Service Co., Ltd. have?

Kyoei Security Service Co., Ltd. has 8 buy-side and 4 sell-side disclosures on record, covering ¥536M ($3.5M) in total reported value, spanning 2022-04-19 to 2025-09-29.

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.

Kyoei Security Service Co., Ltd. 7058

Company

共栄セキュリティーサービス株式会社Kyoei Security Service Co., Ltd.

Investors

Buys

Total Value

¥536M ($3.5M)

Avg Return

+5.05%

Last Filing

2025-09-29

Kyoei Security Service Co., Ltd. (7058) has 8 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥536M ($3.5M) in reported transaction value. The earliest filing StockDrifts holds for Kyoei Security Service Co., Ltd. is dated 2022-04-19; the most recent is 2025-09-29. Across these filings the average return since disclosure is +5.05%, 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
2026-08-18	BUY	unknown	株式会社あっとプラニング at planning	strategic	646.5K	¥2,911	-	¥14M ($88K)
2026-08-18	SELL	unknown	株式会社あっとプラニング at planning	strategic	646.5K	¥2,911	-4.4%	¥63M ($405K)
2026-06-03	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	92.4K	¥2,998	+1.4%	¥45M ($291K)
2025-09-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	77.3K	¥2,834	+7.3%	¥5M ($33K)
2025-08-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	75.5K	¥2,795	+8.8%	¥211M ($1.4M)
2025-08-12	BUY	unknown	株式会社ケイ・エス・エス Co.Ltd.Co kei esu esu	strategic	113.0K	¥2,671	-	¥78M ($506K)
2025-08-12	BUY	Market Buy	株式会社ケイ・エス・エス Co.Ltd.Co kei esu esu	strategic	113.0K	¥2,671	+13.8%	¥88M ($569K)
2024-04-10	BUY	Market Buy	合同会社あっとプラニング Atto Planing LLC.	strategic	641.7K	¥2,944	+3.3%	¥108M ($698K)
2024-04-10	BUY	unknown	合同会社あっとプラニング Atto Planing LLC.	strategic	641.7K	¥2,944	+3.3%	¥108M ($698K)
2024-04-10	SELL	Market Buy	我妻文男 Fumio Agatsuma	activist	0	¥2,944	-3.3%	¥108M ($698K)
2024-04-10	SELL	unknown	我妻文男 Fumio Agatsuma	activist	0	¥2,944	-3.3%	¥108M ($698K)
2024-04-04	BUY	unknown	合同会社あっとプラニング Atto Planing LLC.	strategic	641.7K	¥2,942	+3.3%	¥108M ($698K)
2024-04-04	BUY	Market Buy	合同会社あっとプラニング Atto Planing LLC.	strategic	641.7K	¥2,942	+3.3%	¥108M ($698K)
2024-04-04	SELL	Market Buy	我妻文男 Fumio Agatsuma	activist	0	¥2,942	-3.3%	¥108M ($698K)
2024-04-04	SELL	unknown	我妻文男 Fumio Agatsuma	activist	0	¥2,942	-3.3%	¥108M ($698K)
2022-04-19	BUY	unknown	合同会社あっとプラニング Atto Planing LLC.	strategic	605.0K	¥2,995	-	-
2022-04-19	BUY	unknown	我妻文男 Fumio Agatsuma	activist	36.7K	¥2,995	+1.5%	¥10M ($67K)

Frequently asked questions

Who has been buying Kyoei Security Service Co., Ltd. stock?: 4 distinct investors have filed 8 disclosed large-shareholding filings in Kyoei Security Service Co., Ltd. (7058), most recently on 2025-09-29. 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 Kyoei Security Service Co., Ltd. have?: Kyoei Security Service Co., Ltd. has 8 buy-side and 4 sell-side disclosures on record, covering ¥536M ($3.5M) in total reported value, spanning 2022-04-19 to 2025-09-29.
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.