Who has been buying Mobcast Holdings Inc. stock?

6 distinct investors have filed 17 disclosed large-shareholding filings in Mobcast Holdings Inc. (3664), most recently on 2025-11-12. 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 Mobcast Holdings Inc. have?

Mobcast Holdings Inc. has 17 buy-side and 64 sell-side disclosures on record, covering ¥4.7B ($30.2M) in total reported value, spanning 2021-06-11 to 2025-11-12.

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.

Mobcast Holdings Inc. 3664

Company

株式会社モブキャストホールディングスMobcast Holdings Inc.

Investors

Buys

Total Value

¥4.7B ($30.2M)

Avg Return

-32.11%

Last Filing

2025-11-12

Mobcast Holdings Inc. (3664) has 17 disclosed large-shareholding filings and 64 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥4.7B ($30.2M) in reported transaction value. The earliest filing StockDrifts holds for Mobcast Holdings Inc. is dated 2021-06-11; the most recent is 2025-11-12. Across these filings the average return since disclosure is -32.11%, 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
2026-09-04	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥25	-	-
2026-09-04	SELL	private	エボファンド Evo Fund	engagement	38.1M	¥25	+0.0%	¥51M ($328K)
2026-08-31	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥26	-	-
2026-08-31	SELL	private	エボファンド Evo Fund	engagement	40.8M	¥26	+3.9%	¥57M ($369K)
2026-08-28	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥28	-	-
2026-08-28	SELL	private	エボファンド Evo Fund	engagement	43.7M	¥28	+10.7%	¥65M ($420K)
2026-08-13	SELL	private	エボファンド Evo Fund	engagement	47.0M	¥24	-4.2%	¥31M ($197K)
2026-08-13	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥24	-	-
2026-07-15	SELL	private	エボファンド Evo Fund	activist	48.8M	¥24	-4.2%	¥28M ($178K)
2026-07-15	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥24	-	-
2026-07-14	SELL	private	エボファンド Evo Fund	activist	50.4M	¥23	-8.7%	¥31M ($200K)
2026-07-14	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥23	-	-
2026-07-09	SELL	private	エボファンド Evo Fund	activist	52.3M	¥22	-13.6%	¥38M ($246K)
2026-07-09	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥22	-	-
2026-07-07	BUY	private	エボファンド Evo Fund	activist	54.9M	¥24	+4.2%	¥43M ($280K)
2026-07-07	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥24	-	-
2026-07-06	SELL	private	エボファンド Evo Fund	activist	52.1M	¥24	-4.2%	¥79M ($512K)
2026-07-06	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥24	-	-
2026-06-12	SELL	private	エボファンド Evo Fund	activist	57.2M	¥23	-8.7%	¥125M ($807K)
2026-06-12	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥23	-	-
2026-06-08	BUY	private	エボファンド Evo Fund	activist	65.7M	¥24	+4.2%	¥786M ($5.1M)
2026-06-08	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥24	-	-
2026-05-27	BUY	private	エボファンド Evo Fund	activist	5.7M	¥26	-3.9%	¥148M ($954K)
2026-05-27	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥26	-3.9%	-
2026-05-20	BUY	unknown	藪考樹 Koki Yabu	activist	9.6M	¥25	-	-
2026-05-20	BUY	unknown	藪考樹 Koki Yabu	activist	9.6M	¥25	-	-
2026-05-20	BUY	unknown	藪考樹 Koki Yabu	activist	9.6M	¥25	-	-
2025-11-12	BUY	Market Buy	藪考樹 Koki Yabu	activist	9.6M	¥49	-49.0%	¥209M ($1.3M)
2025-11-12	SELL	unknown	藪考樹 Koki Yabu	activist	9.6M	¥49	+49.0%	¥172M ($1.1M)
2025-11-10	SELL	unknown	藪考樹 Koki Yabu	activist	4.6M	¥48	+47.9%	¥93M ($598K)
2025-11-10	BUY	unknown	藪考樹 Koki Yabu	activist	4.6M	¥48	-	¥93M ($598K)
2025-11-07	SELL	Market Buy	エボファンド Evo Fund	activist	4.1M	¥49	+49.0%	¥61M ($391K)
2025-11-07	SELL	Market Buy	エボファンド Evo Fund	activist	0	¥49	+49.0%	¥260M ($1.7M)
2025-11-07	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥49	-	-
2025-11-07	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥49	-	-
2025-11-05	SELL	Market Buy	エボファンド Evo Fund	activist	5.3M	¥50	+50.0%	¥127M ($822K)
2025-11-05	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥50	-	-
2025-11-04	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥50	-	-
2025-11-04	SELL	Market Buy	エボファンド Evo Fund	activist	7.9M	¥50	+50.0%	¥349M ($2.3M)
2025-10-31	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥53	-	-
2025-10-31	SELL	Market Buy	エボファンド Evo Fund	activist	15.1M	¥53	+52.8%	¥528M ($3.4M)
2025-10-28	SELL	Market Buy	エボファンド Evo Fund	activist	26.2M	¥62	+59.7%	¥21M ($133K)
2025-10-28	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥62	-	-
2025-10-27	BUY	Market Buy	エボファンド Evo Fund	activist	26.7M	¥61	-59.0%	¥1.6B ($10.5M)
2025-10-27	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥61	-59.0%	-
2025-10-15	SELL	Market Buy	エボファンド Evo Fund	activist	3.0M	¥51	+51.0%	¥80M ($518K)
2025-10-15	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥51	-	-
2025-10-14	BUY	Market Buy	エボファンド Evo Fund	activist	4.5M	¥49	-49.0%	¥222M ($1.4M)
2025-10-14	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥49	-49.0%	-
2025-10-06	BUY	unknown	藪考樹 Koki Yabu	activist	4.6M	¥75	-	-

Showing the 50 most recent of 163 filings.

Frequently asked questions

Who has been buying Mobcast Holdings Inc. stock?: 6 distinct investors have filed 17 disclosed large-shareholding filings in Mobcast Holdings Inc. (3664), most recently on 2025-11-12. 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 Mobcast Holdings Inc. have?: Mobcast Holdings Inc. has 17 buy-side and 64 sell-side disclosures on record, covering ¥4.7B ($30.2M) in total reported value, spanning 2021-06-11 to 2025-11-12.
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.