Who has been buying CUC Inc. stock?

4 distinct investors have filed 5 disclosed large-shareholding filings in CUC Inc. (9158), most recently on 2025-06-05. 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 CUC Inc. have?

CUC Inc. has 5 buy-side and 2 sell-side disclosures on record, covering ¥70.3B ($453.7M) in total reported value, spanning 2023-06-23 to 2025-06-05.

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.

CUC Inc. 9158

Company

株式会社シーユーシーCUC Inc.

Investors

Buys

Total Value

¥70.3B ($453.7M)

Avg Return

-50.09%

Last Filing

2025-06-05

CUC Inc. (9158) has 5 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥70.3B ($453.7M) in reported transaction value. The earliest filing StockDrifts holds for CUC Inc. is dated 2023-06-23; the most recent is 2025-06-05. Across these filings the average return since disclosure is -50.09%, 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
2025-06-05	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	1.5M	¥1,018	-21.4%	¥1.5B ($9.9M)
2024-12-09	BUY	unknown	濵口慶太 Keita Hamaguchi	activist	1.9M	¥1,704	-	-
2024-12-05	BUY	unknown	濵口慶太 Keita Hamaguchi	activist	1.9M	¥1,713	-	-
2024-12-05	BUY	unknown	濵口慶太 Keita Hamaguchi	activist	1.9M	¥1,713	-	-
2024-09-05	BUY	unknown	濵口慶太 Keita Hamaguchi	activist	1.9M	¥1,668	-	¥40M ($258K)
2024-09-05	BUY	Market Buy	濵口慶太 Keita Hamaguchi	activist	1.9M	¥1,668	-52.0%	¥35M ($226K)
2024-07-05	SELL	Market Buy	レオス・キャピタルワークス株式会社 RHEOS CAPITAL WORKS Inc.	passive	1.3M	¥1,392	+42.5%	¥476M ($3.1M)
2024-04-16	SELL	unknown	濵口慶太 Keita Hamaguchi	activist	1.8M	¥2,237	+64.2%	¥94M ($606K)
2024-04-16	BUY	unknown	濵口慶太 Keita Hamaguchi	activist	1.8M	¥2,237	-	¥94M ($606K)
2023-07-07	BUY	Market Buy	レオス・キャピタルワークス株式会社 RHEOS CAPITAL WORKS Inc.	passive	1.6M	¥3,450	-76.8%	¥5.5B ($35.5M)
2023-06-26	BUY	unknown	エムスリー株式会社 M3, Inc.	strategic	18.6M	¥3,400	-76.5%	¥63.2B ($408.0M)
2023-06-23	BUY	unknown	濵口慶太 Keita Hamaguchi	activist	1.8M	¥3,280	-75.6%	¥6.0B ($38.5M)

Frequently asked questions

Who has been buying CUC Inc. stock?: 4 distinct investors have filed 5 disclosed large-shareholding filings in CUC Inc. (9158), most recently on 2025-06-05. 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 CUC Inc. have?: CUC Inc. has 5 buy-side and 2 sell-side disclosures on record, covering ¥70.3B ($453.7M) in total reported value, spanning 2023-06-23 to 2025-06-05.
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.