Who has been buying GMO internet, Inc. stock?

3 distinct investors have filed 1 disclosed large-shareholding filings in GMO internet, Inc. (4784), most recently on 2026-05-07. 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 GMO internet, Inc. have?

GMO internet, Inc. has 1 buy-side and 11 sell-side disclosures on record, covering ¥233.3B ($1.5B) in total reported value, spanning 2021-09-28 to 2026-05-07.

Where does StockDrifts get GMO internet, 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.

GMO internet, Inc. 4784

Company

GMOインターネット株式会社GMO internet, Inc.

Investors

Buys

Total Value

¥233.3B ($1.5B)

Avg Return

-23.37%

Last Filing

2026-05-07

GMO internet, Inc. (4784) has 1 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥233.3B ($1.5B) in reported transaction value. The earliest filing StockDrifts holds for GMO internet, Inc. is dated 2021-09-28; the most recent is 2026-05-07. 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 -23.37%, 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
2026-05-27	BUY	unknown	GMOネットアイアールディー株式会社	other	2.3M	¥529	-12.3%	¥1.2B ($7.9M)
2026-05-27	BUY	negotiated	GMOエクイティマネジメント株式会社	activist	1.6M	¥529	-12.3%	¥845M ($5.5M)
2026-05-27	SELL	negotiated	GMOインターネットグループ株式会社	activist	180.5M	¥529	+12.3%	¥3.4B ($21.9M)
2026-05-07	SELL	unknown	GMOネットアイアールディー株式会社	other	2.3M	¥600	+19.8%	¥146M ($944K)
2026-05-07	SELL	negotiated	GMOエクイティマネジメント株式会社	activist	1.6M	¥600	+19.8%	¥110M ($708K)
2026-05-07	SELL	negotiated	GMOインターネットグループ株式会社	activist	186.9M	¥600	+19.8%	¥53.2B ($343.1M)
2026-05-07	SELL	unknown	GMOネットアイアールディー株式会社	other	2.3M	¥600	+19.8%	¥146M ($944K)
2026-05-07	SELL	negotiated	GMOエクイティマネジメント株式会社	activist	1.6M	¥600	+19.8%	¥110M ($708K)
2026-05-07	SELL	negotiated	GMOインターネットグループ株式会社	activist	186.9M	¥600	+19.8%	¥53.2B ($343.1M)
2026-04-23	BUY	unknown	GMOネットアイアールディー株式会社	other	2.3M	¥702	-15.4%	¥1.6B ($10.5M)
2026-04-23	BUY	negotiated	GMOエクイティマネジメント株式会社	activist	1.6M	¥702	-15.4%	¥1.1B ($7.2M)
2026-04-23	BUY	negotiated	GMOインターネットグループ株式会社	activist	248.4M	¥702	-15.4%	¥174.4B ($1.1B)
2025-10-28	BUY	negotiated	GMOネットアイアールディー株式会社 GMO NetIRD Inc.	other	2.3M	¥1,139	-32.9%	¥2.6B ($17.0M)
2025-10-28	SELL	negotiated	GMOアドホールディングス株式会社 GMO AD HOLDINGS, Inc.	activist	1.6M	¥1,139	+32.9%	¥407M ($2.6M)
2025-10-28	SELL	negotiated	GMOインターネットグループ株式会社 GMO internet group, Inc.	activist	248.4M	¥1,139	+32.9%	¥7.4B ($47.8M)
2025-07-29	BUY	negotiated	GMOネットアイアールディー株式会社 GMO NetIRD Inc.	other	2.3M	¥1,538	-50.3%	¥3.6B ($23.0M)
2025-07-29	SELL	negotiated	GMOインターネットグループ株式会社 GMO internet group, Inc.	activist	258.9M	¥1,538	+50.3%	¥887M ($5.7M)
2025-07-29	BUY	negotiated	GMOネットアイアールディー株式会社 GMO NetIRD Inc.	other	2.3M	¥1,538	-50.3%	¥3.6B ($23.0M)
2025-07-29	BUY	negotiated	GMOインターネットグループ株式会社 GMO internet group, Inc.	activist	258.9M	¥1,538	-50.3%	¥398.2B ($2.6B)
2025-07-29	BUY	negotiated	GMOネットアイアールディー株式会社 GMO NetIRD Inc.	other	2.3M	¥1,538	-50.3%	¥3.6B ($23.0M)
2025-07-29	SELL	negotiated	GMOインターネットグループ株式会社 GMO internet group, Inc.	activist	254.9M	¥1,538	+50.3%	¥6.1B ($39.5M)
2025-07-29	BUY	negotiated	GMOアドホールディングス株式会社 GMO AD HOLDINGS, Inc.	activist	1.9M	¥1,538	-50.3%	¥3.0B ($19.2M)
2025-07-29	SELL	negotiated	GMOアドホールディングス株式会社 GMO AD HOLDINGS, Inc.	activist	1.9M	¥1,538	+50.3%	¥4.4B ($28.3M)
2025-07-29	SELL	negotiated	GMOアドホールディングス株式会社 GMO AD HOLDINGS, Inc.	activist	4.8M	¥1,538	+50.3%	¥4.4B ($28.1M)
2025-01-06	BUY	Market Buy	GMOインターネットグループ株式会社 GMO internet group, Inc.	activist	259.5M	¥997	-23.4%	¥233.3B ($1.5B)
2025-01-06	SELL	Market Buy	GMOアドホールディングス株式会社 GMO AD HOLDINGS, Inc.	activist	7.6M	¥997	+23.4%	¥117.1B ($755.5M)
2023-05-30	BUY	negotiated	GMOインターネットグループ株式会社 GMO internet group, Inc.	activist	1.6M	¥424	+80.2%	¥660M ($4.3M)
2023-05-30	BUY	negotiated	GMOアドホールディングス株式会社 GMO AD HOLDINGS, Inc.	activist	7.6M	¥424	+80.2%	¥3.2B ($20.9M)
2021-09-28	SELL	unknown	株式会社ネットアイアールディー NetIRD inc.	other	2.3M	¥479	-59.5%	¥167M ($1.1M)
2021-09-28	BUY	unknown	株式会社ネットアイアールディー NetIRD inc.	other	2.3M	¥479	+59.5%	¥167M ($1.1M)

Frequently asked questions

Who has been buying GMO internet, Inc. stock?: 3 distinct investors have filed 1 disclosed large-shareholding filings in GMO internet, Inc. (4784), most recently on 2026-05-07. 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 GMO internet, Inc. have?: GMO internet, Inc. has 1 buy-side and 11 sell-side disclosures on record, covering ¥233.3B ($1.5B) in total reported value, spanning 2021-09-28 to 2026-05-07.
Where does StockDrifts get GMO internet, 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 GMO internet, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.