Who has been buying SAKURA Internet Inc. stock?

13 distinct investors have filed 11 disclosed large-shareholding filings in SAKURA Internet Inc. (3778), most recently on 2026-03-18. 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 SAKURA Internet Inc. have?

SAKURA Internet Inc. has 11 buy-side and 11 sell-side disclosures on record, covering ¥12.2B ($79.0M) in total reported value, spanning 2024-05-08 to 2026-03-18.

Where does StockDrifts get SAKURA 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.

SAKURA Internet Inc. 3778

Company

さくらインターネット株式会社SAKURA Internet Inc.

Investors

Buys

Total Value

¥12.2B ($79.0M)

Avg Return

-11.15%

Last Filing

2026-03-18

SAKURA Internet Inc. (3778) has 11 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 13 distinct investors. Together those filings cover ¥12.2B ($79.0M) in reported transaction value. The earliest filing StockDrifts holds for SAKURA Internet Inc. is dated 2024-05-08; the most recent is 2026-03-18. 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 -11.15%, 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
2026-08-06	BUY	unknown	野村アセットマネジメント株式会社	other	875.6K	¥3,495	+10.7%	¥3.1B ($19.7M)
2026-08-06	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	441.5K	¥3,495	+10.7%	¥556M ($3.6M)
2026-08-06	SELL	unknown	野村證券株式会社	other	966.2K	¥3,495	-10.7%	¥59M ($378K)
2026-08-04	SELL	unknown	田中紀美	strategic	40.0K	¥3,360	-15.2%	¥14M ($91K)
2026-08-04	SELL	unknown	株式会社田中邦裕事務所	activist	4.5M	¥3,360	-15.2%	¥1.7B ($11.0M)
2026-08-04	SELL	negotiated	田中邦裕	activist	1.1M	¥3,360	-15.2%	¥394M ($2.5M)
2026-07-22	SELL	unknown	野村アセットマネジメント株式会社	other	874.9K	¥2,906	-33.2%	¥12M ($79K)
2026-07-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	279.6K	¥2,906	-33.2%	¥536M ($3.5M)
2026-07-22	BUY	Market Buy	野村證券株式会社	other	985.1K	¥2,906	+33.2%	¥633M ($4.1M)
2026-07-06	BUY	unknown	野村アセットマネジメント株式会社	other	879.5K	¥2,825	+25.8%	¥2.5B ($16.0M)
2026-07-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	464.5K	¥2,825	+25.8%	¥1.3B ($8.5M)
2026-07-06	BUY	unknown	野村證券株式会社	other	766.7K	¥2,825	+25.8%	¥2.2B ($14.0M)
2026-03-18	SELL	unknown	双日株式会社 Sojitz Corporation	corporate	10.6M	¥2,802	-32.2%	¥3.4B ($21.7M)
2026-03-18	SELL	unknown	双日株式会社 Sojitz Corporation	corporate	6.0M	¥2,802	-32.2%	¥12.9B ($83.5M)
2026-02-06	SELL	unknown	オービス・インベストメント・マネジメント・リミテッド（Orbis Investment Management Limited） Orbis Investment Management Limited	other	484.2K	¥2,843	-30.3%	¥6.3B ($40.7M)
2025-12-05	BUY	Market Buy	オービス・インベストメント・マネジメント・リミテッド(Orbis Investment Management Limited) Orbis Investment Management Limited	other	2.7M	¥3,055	+21.3%	¥1.5B ($9.6M)
2025-11-21	BUY	unknown	オービス・インベストメント・マネジメント・リミテッド(Orbis Investment Management Limited) Orbis Investment Management Limited	other	2.2M	¥3,010	+23.1%	¥6.7B ($43.1M)
2024-11-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	873.9K	¥4,475	-17.2%	¥3.9B ($25.2M)
2024-11-21	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	64.4K	¥4,475	-17.2%	¥288M ($1.9M)
2024-11-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	715.6K	¥4,475	+17.2%	¥2.5B ($16.2M)
2024-11-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	874.3K	¥4,895	-24.3%	¥4.3B ($27.6M)
2024-11-07	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.3M	¥4,895	-24.3%	¥6.2B ($40.3M)
2024-08-07	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	136.8K	¥2,688	+37.8%	¥368M ($2.4M)
2024-08-07	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	91.0K	¥2,688	+37.8%	¥160M ($1.0M)
2024-07-05	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	136.8K	¥4,070	-9.0%	¥557M ($3.6M)
2024-07-05	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	3.3M	¥4,070	-9.0%	¥13.3B ($85.8M)
2024-06-26	BUY	Market Buy	株式会社田中邦裕事務所 Kunihiro Tanaka Office Co., Ltd.	activist	4.5M	¥4,385	-15.5%	¥19.7B ($127.0M)
2024-06-26	BUY	Market Buy	田中紀美 Kimi Tanaka	strategic	40.0K	¥4,385	-15.5%	¥175M ($1.1M)
2024-06-26	SELL	negotiated	株式会社田中邦裕事務所 Kunihiro Tanaka Office Co., Ltd.	activist	4.5M	¥4,385	+15.5%	¥1.6B ($10.6M)
2024-06-26	SELL	negotiated	田中紀美 Kimi Tanaka	strategic	40.0K	¥4,385	+15.5%	¥1.6B ($10.6M)
2024-06-26	SELL	negotiated	田中邦裕 Kunihiro Tanaka	activist	1.0M	¥4,385	+15.5%	¥363M ($2.3M)
2024-06-26	BUY	Market Buy	田中邦裕 Kunihiro Tanaka	activist	1.1M	¥4,385	-15.5%	¥280M ($1.8M)
2024-06-21	SELL	unknown	双日株式会社 Sojitz Corporation	corporate	10.6M	¥4,330	+14.4%	¥929M ($6.0M)
2024-05-21	SELL	unknown	モルガン・スタンレー・アンド・カンパニー・エルエルシー Morgan Stanley & Co. LLC	other	366.8K	¥5,610	+34.0%	¥42M ($272K)
2024-05-21	SELL	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	489.5K	¥5,610	+34.0%	¥2.2B ($13.9M)
2024-05-21	SELL	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	697.7K	¥5,610	+34.0%	¥380M ($2.5M)
2024-05-08	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	874.1K	¥6,270	-40.9%	¥5.5B ($35.4M)
2024-05-08	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・エルエルシー Morgan Stanley & Co. LLC	other	373.2K	¥6,270	-40.9%	¥2.3B ($15.1M)
2024-05-08	BUY	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	765.3K	¥6,270	-40.9%	¥4.8B ($31.0M)

Frequently asked questions

Who has been buying SAKURA Internet Inc. stock?: 13 distinct investors have filed 11 disclosed large-shareholding filings in SAKURA Internet Inc. (3778), most recently on 2026-03-18. 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 SAKURA Internet Inc. have?: SAKURA Internet Inc. has 11 buy-side and 11 sell-side disclosures on record, covering ¥12.2B ($79.0M) in total reported value, spanning 2024-05-08 to 2026-03-18.
Where does StockDrifts get SAKURA 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 SAKURA Internet Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.