Who has been buying Ajinomoto Co., Inc. stock?

25 distinct investors have filed 39 disclosed large-shareholding filings in Ajinomoto Co., Inc. (2802), most recently on 2026-04-03. 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 Ajinomoto Co., Inc. have?

Ajinomoto Co., Inc. has 39 buy-side and 38 sell-side disclosures on record, covering ¥494.1B ($3.2B) in total reported value, spanning 2021-04-07 to 2026-04-03.

Where does StockDrifts get Ajinomoto Co., 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.

Ajinomoto Co., Inc. 2802

Company

味の素株式会社Ajinomoto Co., Inc.

Investors

Buys

Total Value

¥494.1B ($3.2B)

Avg Return

+76.09%

Last Filing

2026-04-03

Ajinomoto Co., Inc. (2802) has 39 disclosed large-shareholding filings and 38 disclosed disposals on record, filed by 25 distinct investors. Together those filings cover ¥494.1B ($3.2B) in reported transaction value. The earliest filing StockDrifts holds for Ajinomoto Co., Inc. is dated 2021-04-07; the most recent is 2026-04-03. 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 +76.09%, 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
2026-04-03	BUY	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	4.2M	¥4,612	+5.8%	¥9.9B ($64.0M)
2026-04-03	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	18.7M	¥4,612	+5.8%	¥18.0B ($116.4M)
2026-04-03	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	7.5M	¥4,612	+5.8%	¥13.5B ($87.3M)
2026-04-03	SELL	Market Buy	ブラックロック(ルクセンブルグ)エス・エーS.A.) BlackRock (Luxembourg	passive	81.4K	¥4,612	-5.8%	¥8.1B ($52.4M)
2026-04-03	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	5.4M	¥4,612	+5.8%	¥17.1B ($110.6M)
2026-04-03	SELL	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	3.0M	¥4,612	-5.8%	¥5.9B ($37.8M)
2026-04-03	SELL	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	859.6K	¥4,612	-5.8%	¥3.2B ($20.4M)
2026-04-03	SELL	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	624.9K	¥4,612	-5.8%	¥18.5B ($119.3M)
2026-04-03	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	passive	12.2M	¥4,612	-5.8%	¥5.4B ($34.9M)
2026-04-03	BUY	Market Buy	ブラックロック・アセット・マネジメント・カナダ・リミテッド BlackRock Asset Management Canada Limited	passive	1.4M	¥4,612	+5.8%	¥6.4B ($41.3M)
2026-04-03	BUY	Market Buy	アペリオ・グループ・エルエルシー(Aperio Group	passive	1.5M	¥4,612	+5.8%	¥7.1B ($45.7M)
2026-04-03	BUY	Market Buy	ブラックロック・ジャパン株式会社	passive	18.6M	¥4,612	+5.8%	¥27.5B ($177.5M)
2025-12-22	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	38.9M	¥3,321	-38.7%	¥48.1B ($310.3M)
2025-11-07	BUY	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	26.6M	¥3,623	+27.2%	¥96.2B ($620.6M)
2025-11-07	BUY	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	24.9M	¥3,623	+27.2%	¥90.2B ($582.0M)
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	25.3M	¥4,198	-9.7%	¥5.5B ($35.4M)
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	24.6M	¥4,198	-9.7%	¥16.9B ($108.9M)
2025-07-23	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	53.3M	¥3,907	+17.9%	¥208.2B ($1.3B)
2025-05-21	SELL	Market Buy	第一生命保険株式会社 The Dai-ichi Life Insurance Company, Limited	passive	38.0M	¥3,304	-39.4%	¥40.5B ($261.5M)
2025-04-22	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	49.0M	¥2,913	-58.1%	¥31.1B ($200.3M)
2025-02-21	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	30.1M	¥2,956.5	-55.8%	¥20.1B ($129.9M)
2024-11-22	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	37.0M	¥3,156	-46.0%	¥16.2B ($104.5M)
2024-08-22	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	42.7M	¥2,745.5	-67.8%	¥14.9B ($95.9M)
2024-02-22	SELL	Market Buy	キャピタル・インターナショナル・インク(Capital International Capital International, Inc.	other	0	¥2,929.5	-57.3%	¥2.0B ($12.8M)
2024-02-22	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	48.6M	¥2,929.5	+57.3%	¥20.6B ($133.0M)
2023-12-07	BUY	Market Buy	キャピタル・インターナショナル・インク(Capital International Capital International, Inc.	passive	686.7K	¥2,769	+66.4%	¥1.9B ($12.3M)
2023-12-07	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	182.9K	¥2,769	-66.4%	¥1.0B ($6.5M)
2023-12-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	16.6M	¥2,769	+66.4%	¥45.4B ($292.7M)
2023-12-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	2.3M	¥2,769	+66.4%	¥6.2B ($40.3M)
2023-12-07	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	41.6M	¥2,769	+66.4%	¥22.2B ($143.5M)
2023-12-07	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	97	¥2,769	-66.4%	¥16.7B ($108.1M)
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	13.8M	¥2,778.5	-65.8%	¥2.2B ($14.0M)
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	14.8M	¥2,778.5	-65.8%	¥7.0B ($44.9M)
2023-12-04	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.8M	¥2,740	-68.1%	¥286M ($1.8M)
2023-12-04	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	898.3K	¥2,716.046	+65.0%	¥2.4B ($15.7M)
2023-12-04	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	898.3K	¥2,716.046	+65.0%	¥2.4B ($15.7M)
2023-12-04	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	898.3K	¥2,716.046	+65.0%	¥2.4B ($15.7M)
2023-12-04	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	898.3K	¥2,740	+68.1%	¥143M ($922K)
2023-12-04	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	898.3K	¥2,740	+68.1%	¥143M ($922K)
2023-12-04	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	16.0M	¥2,740	-68.1%	¥9.6B ($61.8M)
2023-12-04	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.9M	¥2,740	-68.1%	¥11.6B ($74.7M)
2023-11-22	SELL	Market Buy	キャピタル・インターナショナル・インク(Capital International Capital International, Inc.	passive	686.7K	¥2,786.5	-65.3%	¥291M ($1.9M)
2023-11-22	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	33.6M	¥2,786.5	+65.3%	¥20.5B ($132.2M)
2023-10-16	BUY	Market Buy	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	846.2K	¥2,874.896	+55.9%	¥2.4B ($15.7M)
2023-10-16	BUY	Market Buy	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	846.2K	¥2,874.896	+55.9%	¥2.4B ($15.7M)
2023-10-16	BUY	Market Buy	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	846.2K	¥2,874.896	+55.9%	¥2.4B ($15.7M)
2023-10-16	BUY	Market Buy	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	846.2K	¥2,855.5	+61.3%	¥149M ($961K)
2023-10-16	BUY	Market Buy	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	846.2K	¥2,855.5	+61.3%	¥149M ($961K)
2023-10-16	BUY	Market Buy	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.9M	¥2,855.5	+61.3%	¥596M ($3.8M)
2023-10-16	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	19.5M	¥2,855.5	-61.3%	¥149M ($961K)

Showing the 50 most recent of 91 filings.

Frequently asked questions

Who has been buying Ajinomoto Co., Inc. stock?: 25 distinct investors have filed 39 disclosed large-shareholding filings in Ajinomoto Co., Inc. (2802), most recently on 2026-04-03. 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 Ajinomoto Co., Inc. have?: Ajinomoto Co., Inc. has 39 buy-side and 38 sell-side disclosures on record, covering ¥494.1B ($3.2B) in total reported value, spanning 2021-04-07 to 2026-04-03.
Where does StockDrifts get Ajinomoto Co., 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 Ajinomoto Co., Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.