Who has been buying GA technologies Co., Ltd. stock?

7 distinct investors have filed 17 disclosed large-shareholding filings in GA technologies Co., Ltd. (3491), most recently on 2026-03-24. 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 GA technologies Co., Ltd. have?

GA technologies Co., Ltd. has 17 buy-side and 91 sell-side disclosures on record, covering ¥3.6B ($23.4M) in total reported value, spanning 2021-03-26 to 2026-03-24.

Where does StockDrifts get GA technologies 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.

GA technologies Co., Ltd. 3491

Company

株式会社GA technologiesGA technologies Co., Ltd.

Investors

Buys

Total Value

¥3.6B ($23.4M)

Avg Return

+11.99%

Last Filing

2026-03-24

GA technologies Co., Ltd. (3491) has 17 disclosed large-shareholding filings and 91 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥3.6B ($23.4M) in reported transaction value. The earliest filing StockDrifts holds for GA technologies Co., Ltd. is dated 2021-03-26; the most recent is 2026-03-24. 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 +11.99%, 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
2026-06-03	BUY	unknown	合同会社GGA	activist	4.5M	¥1,473	-3.0%	¥6.6B ($42.5M)
2026-06-03	BUY	unknown	樋口龍	activist	10.6M	¥1,473	-3.0%	¥15.6B ($100.7M)
2026-06-03	BUY	unknown	合同会社GGA	activist	4.5M	¥1,473	-3.0%	¥6.6B ($42.5M)
2026-06-03	BUY	unknown	樋口龍	activist	10.6M	¥1,473	-3.0%	¥15.6B ($100.7M)
2026-03-24	BUY	unknown	合同会社GGA	activist	4.5M	¥1,341	-19.8%	¥7.2B ($46.3M)
2026-03-24	BUY	unknown	樋口龍	activist	10.6M	¥1,341	-19.8%	¥17.0B ($109.8M)
2026-03-05	BUY	unknown	樋口龍	activist	10.6M	¥1,616	+0.6%	¥17.0B ($109.8M)
2026-03-05	BUY	unknown	合同会社GGA	activist	4.5M	¥1,616	+0.6%	¥7.2B ($46.3M)
2026-03-05	BUY	unknown	合同会社GGA	activist	4.5M	¥1,616	+0.6%	¥7.2B ($46.3M)
2026-03-05	BUY	unknown	樋口龍	activist	10.6M	¥1,616	+0.6%	¥17.0B ($109.8M)
2026-02-20	SELL	unknown	合同会社GGA	activist	4.5M	¥1,635	+1.8%	¥7.2B ($46.3M)
2026-02-20	BUY	unknown	樋口龍	activist	10.6M	¥1,635	+1.8%	¥17.0B ($109.8M)
2026-02-16	BUY	Market Buy	ベイリー・ギフォード・アンド・カンパニー(Baillie Gifford & Co) Baillie Gifford & Co	other	5.0M	¥1,627	-1.3%	¥668M ($4.3M)
2026-02-09	SELL	unknown	合同会社GGA	activist	4.5M	¥1,546	-3.9%	¥7.2B ($46.3M)
2026-02-09	SELL	unknown	合同会社GGA	activist	4.5M	¥1,546	-3.9%	¥7.2B ($46.3M)
2026-02-09	BUY	unknown	樋口龍	activist	10.6M	¥1,546	-3.9%	¥17.0B ($109.8M)
2026-02-09	BUY	unknown	樋口龍	activist	10.6M	¥1,546	-3.9%	¥17.0B ($109.8M)
2026-01-19	BUY	unknown	合同会社GGA	activist	4.6M	¥1,734	+7.4%	¥7.4B ($47.9M)
2026-01-19	BUY	unknown	樋口龍	activist	10.6M	¥1,734	+7.4%	¥17.0B ($109.8M)
2026-01-19	BUY	unknown	合同会社GGA	activist	4.6M	¥1,734	+7.4%	¥7.4B ($47.9M)
2026-01-19	BUY	unknown	樋口龍	activist	10.6M	¥1,734	+7.4%	¥17.0B ($109.8M)
2026-01-19	BUY	unknown	合同会社GGA	activist	4.6M	¥1,734	+7.4%	¥7.4B ($47.9M)
2026-01-19	BUY	unknown	樋口龍	activist	10.6M	¥1,734	+7.4%	¥17.0B ($109.8M)
2026-01-08	BUY	unknown	合同会社GGA	activist	4.6M	¥1,661	+3.3%	¥7.4B ($47.9M)
2026-01-08	BUY	unknown	樋口龍	activist	10.6M	¥1,661	+3.3%	¥17.0B ($109.8M)
2026-01-08	BUY	unknown	合同会社GGA	activist	4.6M	¥1,661	+3.3%	¥7.4B ($47.9M)
2026-01-08	BUY	unknown	樋口龍	activist	10.6M	¥1,661	+3.3%	¥17.0B ($109.8M)
2026-01-08	BUY	unknown	合同会社GGA	activist	4.6M	¥1,661	+3.3%	¥7.4B ($47.9M)
2026-01-08	BUY	unknown	樋口龍	activist	10.6M	¥1,661	+3.3%	¥17.0B ($109.8M)
2025-11-10	BUY	unknown	合同会社GGA LLC GGA	activist	4.6M	¥2,031	-20.9%	¥9.4B ($60.5M)
2025-11-10	BUY	unknown	樋口龍 Ryo Higuchi	activist	10.6M	¥2,031	-20.9%	¥21.5B ($138.9M)
2025-11-07	BUY	unknown	合同会社GGA LLC GGA	activist	4.6M	¥1,986	-19.1%	¥9.2B ($59.2M)
2025-11-07	BUY	unknown	樋口龍 Ryo Higuchi	activist	10.6M	¥1,986	-19.1%	¥21.1B ($135.8M)
2025-11-05	SELL	unknown	合同会社GGA LLC GGA	activist	4.6M	¥2,012	+20.2%	¥8M ($53K)
2025-11-05	SELL	unknown	合同会社GGA LLC GGA	activist	4.6M	¥2,012	+20.2%	¥8M ($53K)
2025-11-05	SELL	unknown	樋口龍 Ryo Higuchi	activist	10.6M	¥2,012	+20.2%	¥25M ($160K)
2025-11-05	SELL	unknown	樋口龍 Ryo Higuchi	activist	10.6M	¥2,012	+20.2%	¥25M ($160K)
2025-06-05	BUY	unknown	合同会社GGA LLC GGA	activist	4.8M	¥1,565	+2.6%	¥7.6B ($48.8M)
2025-06-05	BUY	unknown	樋口龍 Ryo Higuchi	activist	10.7M	¥1,565	+2.6%	¥16.8B ($108.3M)
2025-04-15	SELL	unknown	合同会社GGA LLC GGA	activist	4.6M	¥1,262	-27.3%	¥642M ($4.1M)
2025-04-15	SELL	unknown	合同会社GGA LLC GGA	activist	4.6M	¥1,262	-27.3%	¥642M ($4.1M)
2025-04-15	SELL	unknown	合同会社GGA LLC GGA	activist	4.6M	¥1,262	-27.3%	¥642M ($4.1M)
2025-04-15	SELL	unknown	樋口龍 Ryo Higuchi	activist	10.6M	¥1,262	-27.3%	¥1.5B ($9.5M)
2025-04-15	SELL	unknown	樋口龍 Ryo Higuchi	activist	10.6M	¥1,262	-27.3%	¥1.5B ($9.5M)
2025-04-15	SELL	unknown	樋口龍 Ryo Higuchi	activist	10.6M	¥1,262	-27.3%	¥1.5B ($9.5M)
2025-03-11	SELL	unknown	ベイリー・ギフォード・オーバーシーズ・リミテッド Baillie Gifford Overseas Limited	other	184.5K	¥1,036	-55.0%	¥246M ($1.6M)
2025-03-11	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	4.6M	¥1,036	-55.0%	¥191M ($1.2M)
2025-02-21	BUY	unknown	合同会社GGA LLC GGA	activist	4.6M	¥1,133	+41.8%	¥5.2B ($33.8M)
2025-02-21	BUY	unknown	合同会社GGA LLC GGA	activist	4.6M	¥1,133	+41.8%	¥5.2B ($33.8M)
2025-02-21	BUY	unknown	樋口龍 Ryo Higuchi	activist	10.6M	¥1,133	+41.8%	¥12.0B ($77.5M)

Showing the 50 most recent of 200 filings.

Frequently asked questions

Who has been buying GA technologies Co., Ltd. stock?: 7 distinct investors have filed 17 disclosed large-shareholding filings in GA technologies Co., Ltd. (3491), most recently on 2026-03-24. 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 GA technologies Co., Ltd. have?: GA technologies Co., Ltd. has 17 buy-side and 91 sell-side disclosures on record, covering ¥3.6B ($23.4M) in total reported value, spanning 2021-03-26 to 2026-03-24.
Where does StockDrifts get GA technologies 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 GA technologies Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.