Who has been buying DesignOne Japan, Inc. stock?

4 distinct investors have filed 18 disclosed large-shareholding filings in DesignOne Japan, Inc. (6048), most recently on 2025-09-26. 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 DesignOne Japan, Inc. have?

DesignOne Japan, Inc. has 18 buy-side and 23 sell-side disclosures on record, covering ¥770M ($5.0M) in total reported value, spanning 2023-04-07 to 2025-09-26.

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.

DesignOne Japan, Inc. 6048

Company

株式会社デザインワン・ジャパンDesignOne Japan, Inc.

Investors

Buys

Total Value

¥770M ($5.0M)

Avg Return

-26.28%

Last Filing

2025-09-26

DesignOne Japan, Inc. (6048) has 18 disclosed large-shareholding filings and 23 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥770M ($5.0M) in reported transaction value. The earliest filing StockDrifts holds for DesignOne Japan, Inc. is dated 2023-04-07; the most recent is 2025-09-26. Across these filings the average return since disclosure is -26.28%, 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
2025-09-26	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥95	-	-
2025-09-26	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	0	¥95	+0.0%	¥16M ($101K)
2025-06-13	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥103	-	-
2025-06-13	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	164.8K	¥103	+7.8%	¥10M ($62K)
2025-06-10	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥102	-	-
2025-06-10	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	256.4K	¥102	+6.9%	¥50M ($323K)
2025-06-10	SELL	unknown	高畠昭雄 Akio Takahata	activist	760.0K	¥102	+6.9%	¥25M ($161K)
2025-05-27	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥127	-	-
2025-05-27	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	747.4K	¥127	+25.2%	¥12M ($78K)
2025-05-08	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥110	-	-
2025-05-08	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	843.7K	¥110	-13.6%	¥27M ($172K)
2025-04-23	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥116	-	-
2025-04-23	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	602.1K	¥116	+18.1%	¥38M ($243K)
2025-04-21	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥109	-	-
2025-04-21	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	927.2K	¥109	-12.8%	¥83M ($533K)
2025-04-14	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥106	-	-
2025-04-14	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	168.3K	¥106	+10.4%	¥80M ($516K)
2025-04-04	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥104	-	-
2025-04-04	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	923.0K	¥104	-8.7%	¥82M ($528K)
2025-03-13	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥113	-	-
2025-03-13	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	135.1K	¥113	+15.9%	¥83M ($534K)
2024-12-24	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	868.0K	¥114	-16.7%	¥85M ($549K)
2024-12-24	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥114	-	-
2024-12-03	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥116	-	-
2024-12-03	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	121.8K	¥116	+18.1%	¥91M ($587K)
2024-11-13	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥115	-	-
2024-11-13	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	905.8K	¥115	-17.4%	¥12M ($80K)
2024-09-27	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	798.0K	¥129	-26.4%	¥63M ($406K)
2024-09-27	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥129	-	-
2024-09-24	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥129	-	-
2024-09-24	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	310.6K	¥129	+26.4%	¥59M ($383K)
2024-09-12	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥124	-	-
2024-09-12	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	770.9K	¥124	-23.4%	¥23M ($148K)
2024-09-04	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥130	-	-
2024-09-04	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	584.4K	¥130	+26.9%	¥24M ($154K)
2024-08-22	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	768.7K	¥125	-24.0%	¥83M ($533K)
2024-08-22	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥125	-	-
2024-08-13	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥120	-	-
2024-08-13	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	108.6K	¥120	+20.8%	¥78M ($501K)
2024-07-31	SELL	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥137	+30.7%	¥208K ($1K)
2024-07-31	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	755.4K	¥137	+30.7%	¥9M ($56K)
2024-06-27	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥156	-	-
2024-06-27	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	817.5K	¥156	-39.1%	¥6M ($41K)
2024-06-14	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥152	-	-
2024-06-14	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	776.8K	¥152	-	-
2024-05-22	SELL	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥138	+31.2%	¥209K ($1K)
2024-05-22	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	777.2K	¥138	+31.2%	¥2M ($11K)
2024-04-11	BUY	Market Buy	SBIキャピタル株式会社 SBI CAPITAL Co., Ltd.	passive	1.4M	¥144	-	-
2024-04-11	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	789.7K	¥144	-34.0%	¥97M ($624K)
2024-03-15	SELL	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	117.3K	¥133	+28.6%	¥90M ($583K)

Showing the 50 most recent of 79 filings.

Frequently asked questions

Who has been buying DesignOne Japan, Inc. stock?: 4 distinct investors have filed 18 disclosed large-shareholding filings in DesignOne Japan, Inc. (6048), most recently on 2025-09-26. 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 DesignOne Japan, Inc. have?: DesignOne Japan, Inc. has 18 buy-side and 23 sell-side disclosures on record, covering ¥770M ($5.0M) in total reported value, spanning 2023-04-07 to 2025-09-26.
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.