Who has been buying NETSTARS Co.,Ltd. stock?

5 distinct investors have filed 11 disclosed large-shareholding filings in NETSTARS Co.,Ltd. (5590), most recently on 2025-03-21. 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 NETSTARS Co.,Ltd. have?

NETSTARS Co.,Ltd. has 11 buy-side and 1 sell-side disclosures on record, covering ¥8.7B ($56.2M) in total reported value, spanning 2023-09-28 to 2025-03-21.

Where does StockDrifts get NETSTARS Co.,Ltd. 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.

NETSTARS Co.,Ltd. 5590

Company

株式会社ネットスターズNETSTARS Co.,Ltd.

Investors

Buys

Total Value

¥8.7B ($56.2M)

Avg Return

-8.87%

Last Filing

2025-03-21

NETSTARS Co.,Ltd. (5590) has 11 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥8.7B ($56.2M) in reported transaction value. The earliest filing StockDrifts holds for NETSTARS Co.,Ltd. is dated 2023-09-28; the most recent is 2025-03-21. 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 -8.87%, 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
2026-06-17	BUY	Market Buy	ルンパートナーズキャピタルリミテッド	passive	482.1K	¥692	-0.6%	¥334M ($2.2M)
2026-06-17	SELL	Market Buy	ルンパートナーズジャパンインベストメント	passive	407.4K	¥692	+0.6%	¥180M ($1.2M)
2026-05-22	SELL	Market Buy	ルンパートナーズジャパンインベストメント	passive	667.2K	¥794	+18.1%	¥7M ($43K)
2026-05-22	SELL	Market Buy	ルンパートナーズキャピタルリミテッド	passive	482.1K	¥794	+18.1%	¥341M ($2.2M)
2026-05-22	SELL	Market Buy	ルンパートナーズジャパンインベストメント	passive	667.2K	¥794	+18.1%	¥7M ($43K)
2026-05-22	SELL	Market Buy	ルンパートナーズキャピタルリミテッド	passive	482.1K	¥794	+18.1%	¥341M ($2.2M)
2025-03-21	BUY	Market Buy	ルンパートナーズキャピタルリミテッド LUN Partners Capital Limited	passive	899.3K	¥851	+1.8%	¥213M ($1.4M)
2025-03-21	BUY	Market Buy	ルンパートナーズジャパンインベストメント LUN Partners Japan Investment	passive	667.2K	¥851	+1.8%	¥568M ($3.7M)
2025-03-21	BUY	Market Buy	ルンパートナーズジャパンインベストメント LUN Partners Japan Investment	passive	667.2K	¥851	+1.8%	¥568M ($3.7M)
2025-03-21	BUY	Market Buy	ルンパートナーズキャピタルリミテッド LUN Partners Capital Limited	passive	899.3K	¥851	+1.8%	¥213M ($1.4M)
2024-12-20	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	525.8K	¥801	-8.1%	¥253M ($1.6M)
2024-12-17	BUY	Market Buy	ルンパートナーズジャパンインベストメント LUN Partners Japan Investment	passive	667.2K	¥818	+5.9%	¥546M ($3.5M)
2024-12-17	BUY	Market Buy	ルンパートナーズキャピタルリミテッド LUN Partners Capital Limited	passive	650.0K	¥818	+5.9%	¥167M ($1.1M)
2024-12-17	BUY	Market Buy	ルンパートナーズキャピタルリミテッド LUN Partners Capital Limited	passive	650.0K	¥818	+5.9%	¥167M ($1.1M)
2024-12-17	BUY	Market Buy	ルンパートナーズジャパンインベストメント LUN Partners Japan Investment	unknown	667.2K	¥818	+5.9%	¥546M ($3.5M)
2024-10-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	841.2K	¥1,246	-30.5%	¥1.0B ($6.8M)
2023-10-03	BUY	Market Buy	ルンパートナーズジャパンインベストメント LUN Partners Japan Investment	passive	667.2K	¥980	-11.6%	¥654M ($4.2M)
2023-10-03	BUY	Market Buy	ルンパートナーズジャパンインベストメント LUN Partners Japan Investment	passive	667.2K	¥980	-11.6%	¥654M ($4.2M)
2023-10-03	BUY	Market Buy	ルンパートナーズキャピタルリミテッド LUN Partners Capital Limited	passive	444.8K	¥980	-11.6%	¥436M ($2.8M)
2023-10-03	BUY	unknown	李剛 Ri Tsuyoshi	activist	3.3M	¥980	-11.6%	¥3.3B ($21.0M)
2023-10-03	BUY	Market Buy	ルンパートナーズキャピタルリミテッド LUN Partners Capital Limited	passive	444.8K	¥980	-11.6%	¥436M ($2.8M)
2023-10-03	BUY	unknown	李剛 Ri Tsuyoshi	activist	3.3M	¥980	-11.6%	¥3.3B ($21.0M)
2023-09-28	BUY	Market Buy	ケイジェイピーツー・エルピー(KJP2 L.P.) KJP2 L.P.	passive	2.1M	¥1,143	-24.2%	¥2.3B ($15.1M)

Frequently asked questions

Who has been buying NETSTARS Co.,Ltd. stock?: 5 distinct investors have filed 11 disclosed large-shareholding filings in NETSTARS Co.,Ltd. (5590), most recently on 2025-03-21. 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 NETSTARS Co.,Ltd. have?: NETSTARS Co.,Ltd. has 11 buy-side and 1 sell-side disclosures on record, covering ¥8.7B ($56.2M) in total reported value, spanning 2023-09-28 to 2025-03-21.
Where does StockDrifts get NETSTARS Co.,Ltd. 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 NETSTARS Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.