Who has been buying i Cubed Systems, Inc. stock?

7 distinct investors have filed 9 disclosed large-shareholding filings in i Cubed Systems, Inc. (4495), most recently on 2026-04-21. 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 i Cubed Systems, Inc. have?

i Cubed Systems, Inc. has 9 buy-side and 18 sell-side disclosures on record, covering ¥1.2B ($7.6M) in total reported value, spanning 2021-04-05 to 2026-04-21.

Where does StockDrifts get i Cubed Systems, Inc. insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

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.

i Cubed Systems, Inc. 4495

Company

株式会社アイキューブドシステムズi Cubed Systems, Inc.

Investors

Buys

Total Value

¥1.2B ($7.6M)

Avg Return

-40.55%

Last Filing

2026-04-21

i Cubed Systems, Inc. (4495) has 9 disclosed large-shareholding filings and 18 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥1.2B ($7.6M) in reported transaction value. The earliest filing StockDrifts holds for i Cubed Systems, Inc. is dated 2021-04-05; the most recent is 2026-04-21. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is -40.55%, 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
2026-04-21	BUY	Market Buy	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	266.1K	¥2,198	-14.6%	¥585M ($3.8M)
2025-09-22	BUY	Market Buy	畑中洋亮 Yousuke Hatanaka	activist	421.5K	¥2,415	-8.9%	¥36M ($232K)
2025-05-22	BUY	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	224.2K	¥1,776	+23.9%	¥89M ($572K)
2025-05-22	SELL	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	224.2K	¥1,776	-23.9%	¥89M ($572K)
2025-03-10	SELL	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	274.2K	¥1,436	-53.3%	¥762K ($5K)
2024-05-22	SELL	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	274.2K	¥1,483	-48.4%	¥302M ($1.9M)
2024-02-16	SELL	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	477.4K	¥1,336	-64.8%	¥85M ($548K)
2022-08-18	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	unknown	0	¥1,918	-14.8%	¥53M ($339K)
2022-08-18	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	200.2K	¥1,918	-14.8%	¥819K ($5K)
2022-08-18	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-1.6K	¥1,918	-14.8%	¥104M ($672K)
2022-06-03	SELL	unknown	佐々木勉 Tsutomu Sasaki	strategic	2.7M	¥2,145	-2.6%	¥27M ($175K)
2022-01-11	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	27.3K	¥3,610	-39.0%	¥21M ($135K)
2022-01-11	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	600	¥3,610	-39.0%	¥190M ($1.2M)
2022-01-11	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	242.5K	¥3,610	+39.0%	¥51M ($331K)
2021-10-22	SELL	unknown	佐々木勉 Tsutomu Sasaki	strategic	2.7M	¥3,720	+40.8%	¥49M ($314K)
2021-09-24	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	21.5K	¥4,345	+49.3%	¥14M ($88K)
2021-09-24	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	100	¥4,345	-49.3%	¥435K ($3K)
2021-09-24	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	255.6K	¥4,345	+49.3%	¥36M ($235K)
2021-07-19	SELL	Market Buy	畑中洋亮 Yousuke Hatanaka	passive	399.4K	¥4,400	+50.0%	¥232M ($1.5M)
2021-07-06	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	264.2K	¥4,605	-52.2%	¥181M ($1.2M)
2021-07-06	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	24.5K	¥4,605	+52.2%	¥17M ($109K)
2021-07-06	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	100	¥4,605	+52.2%	¥133M ($856K)
2021-06-03	SELL	Market Buy	ジャフコグループ株式会社 JAFCO Group Co., Ltd.	passive	533.0K	¥4,665	+52.8%	¥290M ($1.9M)
2021-05-20	BUY	unknown	佐々木勉 Tsutomu Sasaki	strategic	2.7M	¥4,915	-55.2%	¥13.3B ($86.0M)
2021-05-10	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	28.4K	¥4,730	-53.5%	¥42M ($271K)
2021-05-10	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	28.9K	¥4,730	+53.5%	¥12M ($80K)
2021-05-10	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	224.0K	¥4,730	+53.5%	¥20M ($127K)
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	19.3K	¥4,642.8	-52.6%	¥90M ($578K)
2021-04-05	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	31.1K	¥4,642.8	-52.6%	¥144M ($932K)
2021-04-05	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	227.7K	¥4,642.8	-52.6%	¥1.1B ($6.8M)

Frequently asked questions

Who has been buying i Cubed Systems, Inc. stock?: 7 distinct investors have filed 9 disclosed large-shareholding filings in i Cubed Systems, Inc. (4495), most recently on 2026-04-21. 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 i Cubed Systems, Inc. have?: i Cubed Systems, Inc. has 9 buy-side and 18 sell-side disclosures on record, covering ¥1.2B ($7.6M) in total reported value, spanning 2021-04-05 to 2026-04-21.
Where does StockDrifts get i Cubed Systems, Inc. insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
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.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for i Cubed Systems, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.