Who has been buying Double Standard Inc. stock?

6 distinct investors have filed 20 disclosed large-shareholding filings in Double Standard Inc. (3925), most recently on 2025-08-27. 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 Double Standard Inc. have?

Double Standard Inc. has 20 buy-side and 17 sell-side disclosures on record, covering ¥6.7B ($43.4M) in total reported value, spanning 2021-04-05 to 2025-08-27.

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.

Double Standard Inc. 3925

Company

株式会社ダブルスタンダードDouble Standard Inc.

Investors

Buys

Total Value

¥6.7B ($43.4M)

Avg Return

-41.89%

Last Filing

2025-08-27

Double Standard Inc. (3925) has 20 disclosed large-shareholding filings and 17 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥6.7B ($43.4M) in reported transaction value. The earliest filing StockDrifts holds for Double Standard Inc. is dated 2021-04-05; the most recent is 2025-08-27. Across these filings the average return since disclosure is -41.89%, 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
2025-08-27	SELL	negotiated	中島正三 SHOZO NAKAJIMA	activist	3.4M	¥1,775	+25.9%	¥1.1B ($6.9M)
2023-10-06	BUY	Market Buy	SBIファイナンシャルサービシーズ株式会社 SBI FINANCIAL SERVICES Co., Ltd.	passive	2.7M	¥1,531	-14.1%	¥231M ($1.5M)
2023-04-04	BUY	Market Buy	SBIファイナンシャルサービシーズ株式会社 SBI FINANCIAL SERVICES Co., Ltd.	passive	2.5M	¥2,041	-35.6%	¥277M ($1.8M)
2023-01-11	BUY	Market Buy	SBIファイナンシャルサービシーズ株式会社 SBI FINANCIAL SERVICES Co., Ltd.	passive	2.4M	¥2,275	-42.2%	¥337M ($2.2M)
2022-08-29	BUY	Market Buy	SBIファイナンシャルサービシーズ株式会社 SBI FINANCIAL SERVICES Co., Ltd.	passive	2.2M	¥2,392	-45.0%	¥409M ($2.6M)
2022-08-29	SELL	Market Buy	SBI損害保険株式会社 SBI General Insurance Co., Ltd.	other	0	¥2,392	+45.0%	¥322M ($2.1M)
2022-08-18	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-500	¥2,610	-46.3%	¥28M ($183K)
2022-08-18	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	420.2K	¥2,610	+49.6%	¥471M ($3.0M)
2022-08-18	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	196.9K	¥2,610	-	-
2022-07-06	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	-10.4K	¥1,973	+28.9%	¥289M ($1.9M)
2022-07-06	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	600.4K	¥1,973	-33.4%	¥3M ($17K)
2022-07-06	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	197.3K	¥1,973	-33.4%	¥8M ($52K)
2022-04-06	BUY	Market Buy	SBI損害保険株式会社 SBI General Insurance Co., Ltd.	passive	134.0K	¥2,112	-	-
2022-04-06	BUY	Market Buy	SBIファイナンシャルサービシーズ株式会社 SBI FINANCIAL SERVICES Co., Ltd.	passive	2.0M	¥2,112	-37.7%	¥304M ($2.0M)
2022-02-03	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	599.3K	¥2,482	+47.0%	¥54M ($348K)
2022-02-03	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.0K	¥2,482	-47.0%	¥135M ($870K)
2022-02-03	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	192.5K	¥2,482	-	-
2021-12-10	SELL	negotiated	中島正三 SHOZO NAKAJIMA	activist	4.0M	¥3,070	+57.2%	¥1.3B ($8.7M)
2021-12-03	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	620.5K	¥3,395	+61.3%	¥290M ($1.9M)
2021-12-03	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	81.3K	¥3,395	+61.3%	¥55M ($357K)
2021-12-03	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	192.2K	¥3,395	-61.3%	¥148M ($952K)
2021-10-20	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	705.6K	¥3,745	-	¥2.6B ($17.0M)
2021-10-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	97.4K	¥3,745	+64.9%	¥2.5B ($15.9M)
2021-10-20	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	149.0K	¥3,745	+64.9%	¥66M ($427K)
2021-10-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	8.6K	¥3,415	-61.5%	¥2.7B ($17.5M)
2021-10-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	756.1K	¥3,415	+61.5%	¥172M ($1.1M)
2021-10-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	166.6K	¥3,415	-61.5%	¥65M ($419K)
2021-09-06	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	9.5K	¥3,875	+66.1%	¥379M ($2.4M)
2021-09-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	403.5K	¥3,875	-66.1%	¥395M ($2.5M)
2021-09-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	74.2K	¥3,875	-66.1%	¥37M ($238K)
2021-07-20	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	107.0K	¥2,600	-	-
2021-07-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	301.6K	¥2,600	+49.4%	¥5M ($34K)
2021-07-20	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	64.3K	¥2,600	-	-
2021-07-05	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	107.6K	¥2,700	+51.3%	¥291M ($1.9M)
2021-07-05	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	303.5K	¥2,700	-51.3%	¥306M ($2.0M)
2021-07-05	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	64.7K	¥2,700	-51.3%	¥29M ($189K)
2021-05-27	BUY	Market Buy	SBI損害保険株式会社 SBI General Insurance Co., Ltd.	passive	67.0K	¥2,410	-	-
2021-05-27	BUY	Market Buy	SBIファイナンシャルサービシーズ株式会社 SBI FINANCIAL SERVICES Co., Ltd.	passive	951.5K	¥2,410	-45.4%	¥2.3B ($14.6M)
2021-05-24	BUY	Market Buy	SBI損害保険株式会社 SBI General Insurance Co., Ltd.	passive	67.0K	¥2,460	-	-
2021-05-24	BUY	Market Buy	SBIファイナンシャルサービシーズ株式会社 SBI FINANCIAL SERVICES Co., Ltd.	passive	1.0M	¥2,460	-46.5%	¥2.5B ($16.1M)
2021-04-21	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	215.1K	¥1,927.5	-31.8%	¥291M ($1.9M)
2021-04-21	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	190.4K	¥1,927.5	+31.8%	¥292M ($1.9M)
2021-04-21	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	53.6K	¥1,927.5	-	-
2021-04-05	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	64.8K	¥1,859.985	+29.3%	¥11M ($73K)
2021-04-05	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	341.6K	¥1,859.985	+29.3%	¥20M ($130K)
2021-04-05	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	53.7K	¥1,859.985	-29.3%	¥3M ($16K)

Frequently asked questions

Who has been buying Double Standard Inc. stock?: 6 distinct investors have filed 20 disclosed large-shareholding filings in Double Standard Inc. (3925), most recently on 2025-08-27. 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 Double Standard Inc. have?: Double Standard Inc. has 20 buy-side and 17 sell-side disclosures on record, covering ¥6.7B ($43.4M) in total reported value, spanning 2021-04-05 to 2025-08-27.
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.