Who has been buying Nalnet Communications, Inc. stock?

5 distinct investors have filed 11 disclosed large-shareholding filings in Nalnet Communications, Inc. (5870), most recently on 2026-01-21. 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 Nalnet Communications, Inc. have?

Nalnet Communications, Inc. has 11 buy-side and 4 sell-side disclosures on record, covering ¥2.9B ($18.6M) in total reported value, spanning 2024-01-04 to 2026-01-21.

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.

Nalnet Communications, Inc. 5870

Company

株式会社ナルネットコミュニケーションズNalnet Communications, Inc.

Investors

Buys

Total Value

¥2.9B ($18.6M)

Avg Return

+9.66%

Last Filing

2026-01-21

Nalnet Communications, Inc. (5870) has 11 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥2.9B ($18.6M) in reported transaction value. The earliest filing StockDrifts holds for Nalnet Communications, Inc. is dated 2024-01-04; the most recent is 2026-01-21. Across these filings the average return since disclosure is +9.66%, 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
2026-08-26	BUY	unknown	Mobility&Maintenance Japan株式会社 Mobility & Maintenance Japan Co. Ltd	other	1.9M	¥912	-	-
2026-01-21	BUY	Market Buy	株式会社イエローハット YELLOW HAT LTD.	strategic	1.1M	¥1,051	-14.6%	¥34M ($217K)
2025-12-25	BUY	Market Buy	株式会社イエローハット YELLOW HAT LTD.	strategic	1.0M	¥1,174	-23.5%	¥66M ($424K)
2025-12-01	BUY	Market Buy	株式会社イエローハット YELLOW HAT LTD.	strategic	979.4K	¥1,039	-13.6%	¥58M ($375K)
2025-11-21	BUY	Market Buy	株式会社イエローハット YELLOW HAT LTD.	strategic	923.7K	¥1,053	-14.7%	¥60M ($388K)
2025-08-12	SELL	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	104	¥734	-22.3%	¥636M ($4.1M)
2025-08-12	BUY	unknown	株式会社イエローハット YELLOW HAT LTD.	strategic	866.4K	¥734	+22.3%	¥636M ($4.1M)
2025-06-25	SELL	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	866.5K	¥676	-32.8%	¥45M ($293K)
2025-05-13	SELL	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	933.8K	¥614	-46.3%	¥47M ($306K)
2024-02-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	44.3K	¥961	-6.6%	¥39M ($251K)
2024-02-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	6.9K	¥961	-	-
2024-01-22	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	370.8K	¥884	+1.6%	¥323M ($2.1M)
2024-01-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	6.9K	¥884	-1.6%	¥3M ($18K)
2024-01-11	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	482.3K	¥1,036	-13.3%	¥500M ($3.2M)
2024-01-11	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	10.0K	¥1,036	-13.3%	¥10M ($67K)
2024-01-05	BUY	unknown	Mobility&Maintenance Japan株式会社 Mobility&Maintenance Japan	other	1.9M	¥855	+5.0%	¥1.6B ($10.5M)
2024-01-04	BUY	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	1.0M	¥838	+7.2%	¥847M ($5.5M)

Frequently asked questions

Who has been buying Nalnet Communications, Inc. stock?: 5 distinct investors have filed 11 disclosed large-shareholding filings in Nalnet Communications, Inc. (5870), most recently on 2026-01-21. 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 Nalnet Communications, Inc. have?: Nalnet Communications, Inc. has 11 buy-side and 4 sell-side disclosures on record, covering ¥2.9B ($18.6M) in total reported value, spanning 2024-01-04 to 2026-01-21.
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.