Who has been buying Mbs Inc stock?

2 distinct investors have filed 6 disclosed large-shareholding filings in Mbs Inc (1401), most recently on 2025-10-20. 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 Mbs Inc have?

Mbs Inc has 6 buy-side and 4 sell-side disclosures on record, covering ¥450M ($2.9M) in total reported value, spanning 2025-09-29 to 2025-10-20.

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.

Mbs Inc 1401

Company

株式会社エムビーエスMbs Inc

Investors

Buys

Total Value

¥450M ($2.9M)

Avg Return

-1.79%

Last Filing

2025-10-20

Mbs Inc (1401) has 6 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥450M ($2.9M) in reported transaction value. The earliest filing StockDrifts holds for Mbs Inc is dated 2025-09-29; the most recent is 2025-10-20. Across these filings the average return since disclosure is -1.79%, 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
2025-10-20	BUY	Market Buy	鳴本聡一郎 Soichiro Narumoto	other	360.0K	¥1,373	-	-
2025-10-20	BUY	unknown	鳴本聡一郎 Soichiro Narumoto	other	360.0K	¥1,373	-	-
2025-10-20	BUY	unknown	極東ホールディングス株式会社 Kyokuto Holdings Co., Ltd.	other	1.1M	¥1,373	+5.5%	¥109M ($705K)
2025-10-20	BUY	Market Buy	極東ホールディングス株式会社 Kyokuto Holdings Co., Ltd.	other	1.1M	¥1,373	+5.5%	¥109M ($705K)
2025-09-29	BUY	unknown	鳴本聡一郎 Soichiro Narumoto	other	360.0K	¥1,450	-0.1%	-
2025-09-29	SELL	unknown	鳴本聡一郎 Soichiro Narumoto	other	360.0K	¥1,450	+0.1%	¥49M ($318K)
2025-09-29	SELL	unknown	鳴本聡一郎 Soichiro Narumoto	other	360.0K	¥1,450	+0.1%	¥49M ($318K)
2025-09-29	BUY	unknown	鳴本聡一郎 Soichiro Narumoto	other	360.0K	¥1,450	-0.1%	-
2025-09-29	BUY	unknown	極東ホールディングス株式会社 Kyokuto Holdings Co., Ltd.	other	1.1M	¥1,450	-0.1%	¥115M ($745K)
2025-09-29	SELL	unknown	極東ホールディングス株式会社 Kyokuto Holdings Co., Ltd.	other	995.0K	¥1,450	+0.1%	¥91M ($586K)
2025-09-29	SELL	unknown	極東ホールディングス株式会社 Kyokuto Holdings Co., Ltd.	other	995.0K	¥1,450	+0.1%	¥91M ($586K)
2025-09-29	BUY	unknown	極東ホールディングス株式会社 Kyokuto Holdings Co., Ltd.	other	1.1M	¥1,450	-0.1%	¥115M ($745K)

Frequently asked questions

Who has been buying Mbs Inc stock?: 2 distinct investors have filed 6 disclosed large-shareholding filings in Mbs Inc (1401), most recently on 2025-10-20. 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 Mbs Inc have?: Mbs Inc has 6 buy-side and 4 sell-side disclosures on record, covering ¥450M ($2.9M) in total reported value, spanning 2025-09-29 to 2025-10-20.
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.