Who has been buying CyberAgent, Inc. stock?

30 distinct investors have filed 53 disclosed large-shareholding filings in CyberAgent, Inc. (4751), most recently on 2026-02-20. 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 CyberAgent, Inc. have?

CyberAgent, Inc. has 53 buy-side and 47 sell-side disclosures on record, covering ¥143.1B ($923.5M) in total reported value, spanning 2021-03-18 to 2026-02-20.

Where does StockDrifts get CyberAgent, 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.

CyberAgent, Inc. 4751

Company

株式会社サイバーエージェントCyberAgent, Inc.

Investors

Buys

Total Value

¥143.1B ($923.5M)

Avg Return

-2.75%

Last Filing

2026-02-20

CyberAgent, Inc. (4751) has 53 disclosed large-shareholding filings and 47 disclosed disposals on record, filed by 30 distinct investors. Together those filings cover ¥143.1B ($923.5M) in reported transaction value. The earliest filing StockDrifts holds for CyberAgent, Inc. is dated 2021-03-18; the most recent is 2026-02-20. 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 -2.75%, 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
2026-07-06	BUY	unknown	アモーヴァ・アセットマネジメント株式会社	other	14.8M	¥1,537.5	-5.0%	¥22.7B ($146.4M)
2026-07-06	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社	other	14.5M	¥1,537.5	-5.0%	¥22.3B ($143.8M)
2026-05-21	BUY	Market Buy	野村アセットマネジメント株式会社	other	23.4M	¥1,314	+3.8%	¥2.1B ($13.8M)
2026-05-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	820.7K	¥1,314	-3.8%	¥6.9B ($44.7M)
2026-05-21	SELL	unknown	野村證券株式会社	other	1.5M	¥1,314	-3.8%	¥133M ($860K)
2026-02-20	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	40.5M	¥1,309	+3.7%	¥8.8B ($56.5M)
2025-12-22	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	33.8M	¥1,319	+3.0%	¥8.6B ($55.2M)
2025-12-18	BUY	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company	passive	6.8M	¥1,311	+3.6%	¥9.2B ($59.2M)
2025-12-18	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	5.7M	¥1,311	+3.6%	¥7.8B ($50.1M)
2025-12-18	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	1.6M	¥1,311	+3.6%	¥2.2B ($14.3M)
2025-12-18	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	641.9K	¥1,311	+3.6%	¥872M ($5.6M)
2025-12-18	BUY	Market Buy	ブラックロック・フィナンシャル・マネジメント・インク(BlackRock Financial Management	passive	1.1M	¥1,311	+3.6%	¥1.5B ($9.5M)
2025-12-18	BUY	Market Buy	ブラックロック・アドバイザーズ・エルエルシー(BlackRock Advisers	passive	839.4K	¥1,311	+3.6%	¥1.1B ($7.4M)
2025-12-18	BUY	Market Buy	ブラックロック・ジャパン株式会社	passive	8.9M	¥1,311	+3.6%	¥12.0B ($77.6M)
2025-11-10	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	27.3M	¥1,523	-10.8%	¥41.6B ($268.6M)
2025-11-07	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	6.6M	¥1,504.5	+9.7%	¥10.7B ($69.3M)
2025-11-07	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	12.5M	¥1,504.5	+9.7%	¥16.4B ($105.7M)
2025-09-19	SELL	unknown	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	11.4M	¥1,755.5	+22.6%	¥889M ($5.7M)
2025-09-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	11.9M	¥1,755.5	+22.6%	¥6.0B ($39.0M)
2025-09-04	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	21.7M	¥1,750	+22.4%	¥11.8B ($76.1M)
2025-09-04	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	6.1M	¥1,750	-22.4%	¥7.4B ($48.0M)
2025-09-04	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.6M	¥1,750	-22.4%	¥8.9B ($57.2M)
2025-02-20	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	28.5M	¥1,166.5	+16.4%	¥5.7B ($36.6M)
2025-02-20	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	1.9M	¥1,166.5	-16.4%	¥1.3B ($8.4M)
2025-02-20	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.6M	¥1,166.5	-16.4%	¥372.2B ($2.4B)
2025-02-06	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	13.7M	¥1,180	-15.1%	¥8.5B ($55.1M)
2025-02-06	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	23.4M	¥1,180	-15.1%	¥717M ($4.6M)
2024-12-19	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	21.0M	¥1,114	-21.9%	¥2.6B ($16.7M)
2024-12-19	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	24.0M	¥1,114	-21.9%	¥3.3B ($21.1M)
2024-09-10	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	23.3M	¥1,042	-30.3%	¥4.7B ($30.3M)
2024-09-10	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	27.0M	¥1,042	-30.3%	¥1.4B ($9.2M)
2024-05-21	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	11.8M	¥1,006.5	+34.9%	¥764M ($4.9M)
2024-05-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	15.3M	¥1,006.5	-34.9%	¥306M ($2.0M)
2024-04-04	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	23.6M	¥1,060	+28.1%	¥1.1B ($6.9M)
2024-04-04	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.0M	¥1,060	-28.1%	¥5.6B ($36.4M)
2024-04-04	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	4.8M	¥1,060	+28.1%	¥5.1B ($32.8M)
2023-12-20	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	22.5M	¥864.5	+57.1%	¥4.2B ($27.4M)
2023-12-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	8.4M	¥864.5	-57.1%	¥7.7B ($50.0M)
2023-12-20	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	4.8M	¥864.5	-57.1%	¥44M ($282K)
2023-12-12	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	28.4M	¥821.7	-65.3%	¥2.3B ($15.0M)
2023-12-12	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	27.8M	¥821.7	-65.3%	¥2.0B ($13.1M)
2023-12-06	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	11.1M	¥860.3	-57.9%	¥740M ($4.8M)
2023-12-06	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	15.6M	¥860.3	-57.9%	¥3.3B ($21.4M)
2023-12-05	SELL	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	2.8M	¥858.7	-58.1%	¥2.7B ($17.4M)
2023-12-05	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	4.9M	¥858.7	+58.1%	¥4.2B ($27.0M)
2023-12-05	SELL	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	594.5K	¥858.7	-58.1%	¥174M ($1.1M)
2023-12-05	SELL	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	5.0M	¥858.7	-58.1%	¥1.7B ($11.2M)
2023-12-05	SELL	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	1.1M	¥858.7	-58.1%	¥1.3B ($8.7M)
2023-12-05	SELL	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	1.3M	¥858.7	-58.1%	¥1000M ($6.5M)
2023-12-05	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	81.5K	¥858.7	+58.1%	¥7.7B ($49.6M)

Showing the 50 most recent of 114 filings.

Frequently asked questions

Who has been buying CyberAgent, Inc. stock?: 30 distinct investors have filed 53 disclosed large-shareholding filings in CyberAgent, Inc. (4751), most recently on 2026-02-20. 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 CyberAgent, Inc. have?: CyberAgent, Inc. has 53 buy-side and 47 sell-side disclosures on record, covering ¥143.1B ($923.5M) in total reported value, spanning 2021-03-18 to 2026-02-20.
Where does StockDrifts get CyberAgent, 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 CyberAgent, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.