Who has been buying CB Group MANAGEMENT Co., Ltd. stock?

10 distinct investors have filed 10 disclosed large-shareholding filings in CB Group MANAGEMENT Co., Ltd. (9852), most recently on 2025-04-18. 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 CB Group MANAGEMENT Co., Ltd. have?

CB Group MANAGEMENT Co., Ltd. has 10 buy-side and 11 sell-side disclosures on record, covering ¥2.5B ($16.0M) in total reported value, spanning 2021-03-29 to 2025-04-18.

Where does StockDrifts get CB Group MANAGEMENT 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.

CB Group MANAGEMENT Co., Ltd. 9852

Company

CBグループマネジメント株式会社CB Group MANAGEMENT Co., Ltd.

Investors

Buys

Total Value

¥2.5B ($16.0M)

Avg Return

+77.94%

Last Filing

2025-04-18

CB Group MANAGEMENT Co., Ltd. (9852) has 10 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥2.5B ($16.0M) in reported transaction value. The earliest filing StockDrifts holds for CB Group MANAGEMENT Co., Ltd. is dated 2021-03-29; the most recent is 2025-04-18. 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 +77.94%, 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
2025-04-18	BUY	acquisition	C Holdings株式会社 C Holdings Co., Ltd.	activist	2.2M	¥8,040	+0.0%	¥1.0B ($6.5M)
2025-04-18	BUY	acquisition	C Holdings株式会社 C Holdings Co., Ltd.	activist	2.2M	¥8,040	+0.0%	¥1.0B ($6.5M)
2025-04-07	SELL	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	0	¥8,020	-0.3%	¥488M ($3.1M)
2025-04-07	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	100	¥8,020	-0.3%	¥721M ($4.6M)
2025-03-28	SELL	unknown	児島誠一郎 Seiichiro Kojima	other	0	¥8,020	-0.3%	¥393M ($2.5M)
2025-03-28	SELL	unknown	児島なおみ Naomi Kojima	other	0	¥8,020	-0.3%	¥571M ($3.7M)
2025-03-28	SELL	unknown	セントラル商事株式会社 Central Shoji Co., Ltd.	other	0	¥8,020	-0.3%	¥2.7B ($17.7M)
2025-03-28	SELL	unknown	公益財団法人CBGMこども財団 CBGM CHILD FOUNDATION	unknown	0	¥8,020	-0.3%	¥2.4B ($15.3M)
2025-03-28	SELL	unknown	中央物産共栄会理事長竹森征之 Masayuki Takemori	unknown	0	¥8,020	-0.3%	¥2.0B ($12.9M)
2025-03-28	BUY	unknown	中央物産共栄会理事長竹森征之 Masayuki Takemori	unknown	0	¥8,020	+0.3%	¥2.0B ($12.9M)
2025-03-25	BUY	acquisition	C Holdings株式会社 C Holdings Co., Ltd.	activist	2.0M	¥8,010	+0.4%	¥16.3B ($105.0M)
2025-03-25	BUY	acquisition	C Holdings株式会社 C Holdings Co., Ltd.	activist	2.0M	¥8,010	+0.4%	¥16.3B ($105.0M)
2025-02-12	BUY	unknown	児島誠一郎 Seiichiro Kojima	other	49.0K	¥8,030	+0.1%	¥393M ($2.5M)
2025-02-12	BUY	unknown	児島なおみ Naomi Kojima	other	71.2K	¥8,030	+0.1%	¥572M ($3.7M)
2025-02-12	BUY	unknown	公益財団法人CBGMこども財団 CBGM CHILD FOUNDATION	other	294.9K	¥8,030	+0.1%	¥2.4B ($15.3M)
2025-02-12	BUY	unknown	セントラル商事株式会社 Central Shoji Co., Ltd.	other	341.7K	¥8,030	+0.1%	¥2.7B ($17.7M)
2024-07-10	BUY	unknown	児島誠一郎 Seiichiro Kojima	other	49.0K	¥5,110	+57.3%	¥8M ($49K)
2024-07-10	BUY	unknown	児島なおみ Naomi Kojima	other	71.2K	¥5,110	+57.3%	¥364M ($2.3M)
2024-07-10	BUY	unknown	セントラル商事株式会社 Central Shoji Co., Ltd.	other	341.7K	¥5,110	+57.3%	¥1.7B ($11.3M)
2024-07-10	BUY	unknown	児島誠一郎 Seiichiro Kojima	other	49.0K	¥5,110	+57.3%	¥8M ($49K)
2024-07-10	BUY	unknown	児島なおみ Naomi Kojima	other	71.2K	¥5,110	+57.3%	¥364M ($2.3M)
2024-07-10	BUY	unknown	セントラル商事株式会社 Central Shoji Co., Ltd.	other	341.7K	¥5,110	+57.3%	¥1.7B ($11.3M)
2024-07-10	BUY	unknown	児島誠一郎 Seiichiro Kojima	other	49.0K	¥5,110	+57.3%	¥8M ($49K)
2024-07-10	BUY	unknown	児島なおみ Naomi Kojima	other	71.2K	¥5,110	+57.3%	¥364M ($2.3M)
2024-07-10	BUY	unknown	セントラル商事株式会社 Central Shoji Co., Ltd.	other	341.7K	¥5,110	+57.3%	¥1.7B ($11.3M)
2024-07-10	SELL	unknown	丸山源一 genichi maruyama	unknown	0	¥5,110	-57.3%	¥473M ($3.1M)
2024-07-10	SELL	unknown	丸山源一 genichi maruyama	unknown	0	¥5,110	-57.3%	¥473M ($3.1M)
2024-07-10	SELL	unknown	丸山源一 genichi maruyama	unknown	0	¥5,110	-57.3%	¥473M ($3.1M)
2024-06-28	BUY	unknown	公益財団法人CBGMこども財団 CBGM CHILD FOUNDATION	other	294.9K	¥5,110	+57.3%	¥473M ($3.1M)
2024-06-28	BUY	Market Buy	公益財団法人CBGMこども財団 CBGM CHILD FOUNDATION	other	294.9K	¥5,110	+57.3%	¥473M ($3.1M)
2024-06-28	BUY	unknown	公益財団法人CBGMこども財団 CBGM CHILD FOUNDATION	other	294.9K	¥5,110	+57.3%	¥473M ($3.1M)
2024-01-24	BUY	unknown	公益財団法人CBGMこども財団 CBGM CHILD FOUNDATION	other	202.4K	¥4,870	+65.1%	¥985M ($6.4M)
2024-01-24	BUY	unknown	公益財団法人CBGMこども財団 CBGM CHILD FOUNDATION	other	202.4K	¥4,870	+65.1%	¥985M ($6.4M)
2024-01-24	BUY	unknown	公益財団法人CBGMこども財団 CBGM CHILD FOUNDATION	other	202.4K	¥4,870	+65.1%	¥985M ($6.4M)
2023-06-06	SELL	unknown	中央物産共栄会理事長掬川正純 masazumi kikukawa	unknown	0	¥3,600	-123.3%	¥877M ($5.7M)
2023-06-06	BUY	unknown	中央物産共栄会理事長竹森征之 masayuki takemori	strategic	248.8K	¥3,600	+123.3%	¥896M ($5.8M)
2023-06-06	BUY	unknown	中央物産共栄会理事長掬川正純 masazumi kikukawa	unknown	0	¥3,600	+123.3%	¥877M ($5.7M)
2022-07-27	BUY	Market Buy	中央物産共栄会理事長掬川正純 masazumi kikukawa	strategic	243.8K	¥2,995	+168.4%	¥77M ($499K)
2021-03-29	BUY	Market Buy	中央物産共栄会理事長掬川正純 masazumi kikukawa	strategic	217.9K	¥2,746	+192.8%	¥68M ($436K)
2021-03-29	BUY	unknown	中央物産共栄会理事長掬川正純 masazumi kikukawa	strategic	217.9K	¥2,746	+192.8%	¥68M ($436K)

Frequently asked questions

Who has been buying CB Group MANAGEMENT Co., Ltd. stock?: 10 distinct investors have filed 10 disclosed large-shareholding filings in CB Group MANAGEMENT Co., Ltd. (9852), most recently on 2025-04-18. 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 CB Group MANAGEMENT Co., Ltd. have?: CB Group MANAGEMENT Co., Ltd. has 10 buy-side and 11 sell-side disclosures on record, covering ¥2.5B ($16.0M) in total reported value, spanning 2021-03-29 to 2025-04-18.
Where does StockDrifts get CB Group MANAGEMENT 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 CB Group MANAGEMENT Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.