Who has been buying QB Net Holdings Co.,Ltd. stock?

11 distinct investors have filed 26 disclosed large-shareholding filings in QB Net Holdings Co.,Ltd. (6571), most recently on 2026-04-07. 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 QB Net Holdings Co.,Ltd. have?

QB Net Holdings Co.,Ltd. has 26 buy-side and 21 sell-side disclosures on record, covering ¥3.6B ($23.0M) in total reported value, spanning 2022-02-22 to 2026-04-07.

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.

QB Net Holdings Co.,Ltd. 6571

Company

キュービーネットホールディングス株式会社QB Net Holdings Co.,Ltd.

Investors

Buys

Total Value

¥3.6B ($23.0M)

Avg Return

+3.39%

Last Filing

2026-04-07

QB Net Holdings Co.,Ltd. (6571) has 26 disclosed large-shareholding filings and 21 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥3.6B ($23.0M) in reported transaction value. The earliest filing StockDrifts holds for QB Net Holdings Co.,Ltd. is dated 2022-02-22; the most recent is 2026-04-07. Across these filings the average return since disclosure is +3.39%, 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
2026-07-23	SELL	unknown	SMBC日興証券株式会社	other	258.6K	¥1,296	+1.5%	¥282M ($1.8M)
2026-07-23	SELL	Market Buy	三井住友DSアセットマネジメント株式会社	passive	209.1K	¥1,296	+1.5%	¥26M ($169K)
2026-04-07	BUY	Market Buy	株式会社ポートフォリア Portfolia Inc.	passive	1.0M	¥1,382	-7.6%	¥50M ($324K)
2025-05-09	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	462.3K	¥1,090	+17.2%	¥504M ($3.3M)
2025-05-09	BUY	unknown	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	224.1K	¥1,090	+17.2%	¥244M ($1.6M)
2025-04-22	BUY	Market Buy	株式会社ポートフォリア Portfolia Inc.	passive	962.6K	¥1,078	+18.5%	¥225M ($1.5M)
2025-04-07	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	66.0K	¥985	+29.6%	¥28M ($184K)
2025-04-07	SELL	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	450.0K	¥985	-29.6%	¥168M ($1.1M)
2024-10-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	589.8K	¥1,035	-23.4%	¥192M ($1.2M)
2024-09-24	BUY	Market Buy	株式会社ポートフォリア Portfolia Inc.	passive	753.0K	¥1,080	+18.2%	¥813M ($5.2M)
2024-09-06	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	774.8K	¥1,109	-15.2%	¥202M ($1.3M)
2024-08-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	956.7K	¥1,291	-1.1%	¥263M ($1.7M)
2024-07-22	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	753.0K	¥1,331	-4.1%	¥1.0B ($6.5M)
2024-05-21	SELL	unknown	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	583.3K	¥1,164	-9.7%	¥296M ($1.9M)
2024-04-22	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	620.0K	¥1,139	+12.1%	¥706M ($4.6M)
2024-04-22	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	36.4K	¥1,139	+12.1%	¥41M ($267K)
2024-03-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	78.0K	¥1,236	-3.3%	¥29M ($188K)
2024-03-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	26.7K	¥1,236	-3.3%	¥125M ($805K)
2024-03-22	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	485.1K	¥1,236	-3.3%	¥11M ($73K)
2024-02-07	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	100.9K	¥1,480	-13.7%	¥149M ($963K)
2024-02-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	127.4K	¥1,480	-13.7%	¥188M ($1.2M)
2024-02-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	494.5K	¥1,480	-13.7%	¥732M ($4.7M)
2024-01-11	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	100.5K	¥1,509	+15.4%	¥4M ($26K)
2024-01-11	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	112.2K	¥1,509	+15.4%	¥194M ($1.3M)
2024-01-11	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	435.7K	¥1,509	-	-
2023-12-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	103.5K	¥1,451	+12.0%	¥40M ($257K)
2023-12-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	240.5K	¥1,451	+12.0%	¥80M ($515K)
2023-12-22	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	434.5K	¥1,451	+12.0%	¥91M ($588K)
2023-11-21	SELL	unknown	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	835.7K	¥1,533	+16.7%	¥225M ($1.4M)
2023-10-20	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	130.5K	¥1,567	-	¥204M ($1.3M)
2023-10-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	295.1K	¥1,567	+18.5%	¥158M ($1.0M)
2023-10-20	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	496.6K	¥1,567	-	-
2023-09-22	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	395.5K	¥1,568	-18.6%	¥211M ($1.4M)
2023-09-22	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	496.1K	¥1,568	+18.6%	¥6M ($40K)
2023-09-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	-246	¥1,568	+13.1%	¥399M ($2.6M)
2023-07-07	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	254.7K	¥1,522	-16.1%	¥147M ($947K)
2023-07-07	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.1K	¥1,522	-16.1%	¥99M ($640K)
2023-07-07	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	499.2K	¥1,522	+16.1%	¥54M ($346K)
2023-07-06	BUY	Market Buy	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	979.5K	¥1,522	-16.1%	¥242M ($1.6M)
2023-06-07	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	157.2K	¥1,523	+16.1%	¥81M ($524K)
2023-06-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	195.0K	¥1,523	-16.1%	¥206M ($1.3M)
2023-06-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	533.9K	¥1,523	-16.1%	¥798M ($5.1M)
2023-04-06	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	210.2K	¥1,346	-5.1%	¥75M ($486K)
2023-04-06	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	60.2K	¥1,346	+5.1%	¥445M ($2.9M)
2023-04-06	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	972.1K	¥1,346	+5.1%	¥95M ($610K)
2022-07-07	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.0M	¥1,335	-4.3%	¥40M ($256K)
2022-07-07	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	153.4K	¥1,335	-4.3%	¥100M ($646K)
2022-07-07	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.7K	¥1,335	-4.3%	¥473M ($3.1M)
2022-06-16	BUY	Market Buy	トライヴィスタ・キャピタル株式会社 TriVista Capital Inc.	activist	2.5M	¥1,284	-0.6%	¥96M ($620K)
2022-06-09	BUY	Market Buy	トライヴィスタ・キャピタル株式会社 TriVista Capital Inc.	passive	2.5M	¥1,363	-6.3%	¥190M ($1.2M)

Showing the 50 most recent of 53 filings.

Frequently asked questions

Who has been buying QB Net Holdings Co.,Ltd. stock?: 11 distinct investors have filed 26 disclosed large-shareholding filings in QB Net Holdings Co.,Ltd. (6571), most recently on 2026-04-07. 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 QB Net Holdings Co.,Ltd. have?: QB Net Holdings Co.,Ltd. has 26 buy-side and 21 sell-side disclosures on record, covering ¥3.6B ($23.0M) in total reported value, spanning 2022-02-22 to 2026-04-07.
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.