Who has been buying Nihon M&A Center Holdings Inc. stock?

18 distinct investors have filed 35 disclosed large-shareholding filings in Nihon M&A Center Holdings Inc. (2127), most recently on 2026-05-12. 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 Nihon M&A Center Holdings Inc. have?

Nihon M&A Center Holdings Inc. has 35 buy-side and 24 sell-side disclosures on record, covering ¥171.8B ($1.1B) in total reported value, spanning 2021-09-15 to 2026-05-12.

Where does StockDrifts get Nihon M&A Center Holdings 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.

Nihon M&A Center Holdings Inc. 2127

Company

株式会社日本M&AセンターホールディングスNihon M&A Center Holdings Inc.

Investors

Buys

Total Value

¥171.8B ($1.1B)

Avg Return

-36.72%

Last Filing

2026-05-12

Nihon M&A Center Holdings Inc. (2127) has 35 disclosed large-shareholding filings and 24 disclosed disposals on record, filed by 18 distinct investors. Together those filings cover ¥171.8B ($1.1B) in reported transaction value. The earliest filing StockDrifts holds for Nihon M&A Center Holdings Inc. is dated 2021-09-15; the most recent is 2026-05-12. 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 -36.72%, 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
2026-06-05	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	27.1M	¥637.1	-3.0%	¥1.8B ($11.8M)
2026-06-05	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	2.5M	¥637.1	-3.0%	¥365M ($2.4M)
2026-05-12	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	32.3M	¥639.5	-0.4%	¥2.8B ($18.1M)
2026-03-02	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	29.9M	¥714	+4.4%	¥20.4B ($131.8M)
2026-03-02	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	3.1M	¥714	+4.4%	¥2.1B ($13.6M)
2025-12-22	BUY	Market Buy	アセットマネジメントOne株式会社	other	27.9M	¥714.6	-4.5%	¥19.0B ($122.8M)
2025-12-22	SELL	Market Buy	みずほ証券株式会社	other	329.7K	¥714.6	+4.5%	¥225M ($1.5M)
2025-10-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	24.4M	¥731.1	-6.7%	¥2.4B ($15.4M)
2025-10-07	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	382.5K	¥731.1	-6.7%	¥280M ($1.8M)
2025-03-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	21.1M	¥594.3	+14.8%	¥2.2B ($14.1M)
2025-03-07	SELL	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	322.0K	¥594.3	-14.8%	¥4.0B ($25.8M)
2025-02-10	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	35.6M	¥607.1	-12.4%	¥1.6B ($10.2M)
2025-02-10	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	3.4M	¥607.1	-12.4%	¥450M ($2.9M)
2024-12-20	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	17.4M	¥653.1	+4.5%	¥11.4B ($73.5M)
2024-12-20	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	412.3K	¥653.1	+4.5%	¥269M ($1.7M)
2024-07-02	BUY	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	38.2M	¥830.1	-17.8%	¥3.6B ($23.3M)
2024-07-02	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	4.2M	¥830.1	+17.8%	¥28M ($180K)
2024-06-18	BUY	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	33.8M	¥793.3	-14.0%	¥2.8B ($17.8M)
2024-06-18	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	4.2M	¥793.3	+14.0%	¥80M ($517K)
2024-06-14	BUY	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	30.4M	¥777.9	-12.3%	¥4.3B ($27.9M)
2024-06-14	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	4.3M	¥777.9	+12.3%	¥26M ($169K)
2024-02-20	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	15.8M	¥1,045.5	-34.7%	¥16.4B ($105.6M)
2024-02-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-67.4K	¥1,045.5	+34.7%	¥1.2B ($8.0M)
2023-11-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	18.3M	¥702	-2.8%	¥12.7B ($82.1M)
2023-11-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.1M	¥702	+2.8%	¥4.0B ($25.5M)
2023-11-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	-4.8M	¥702	+2.8%	¥3.5B ($22.4M)
2023-10-19	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	216.0K	¥666.9	+2.3%	¥144M ($929K)
2023-10-19	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	19.7M	¥666.9	+2.3%	¥13.0B ($83.7M)
2023-10-19	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	81.4K	¥666.9	+2.3%	¥54M ($350K)
2023-09-29	SELL	Market Buy	サンズ・キャピタル・マネジメント・エルエルシー(Sands Capital Management, LLC) Sands Capital Management, LLC	passive	16.7M	¥719.5	+5.2%	¥2.6B ($17.0M)
2023-07-19	BUY	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	24.8M	¥1,071.5	-36.3%	¥9.5B ($61.3M)
2023-07-19	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	4.3M	¥1,071.5	+36.3%	¥36M ($233K)
2023-07-06	BUY	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	16.0M	¥1,046	-34.8%	¥16.7B ($107.6M)
2023-07-06	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	23.2M	¥1,046	-34.8%	¥916M ($5.9M)
2023-07-06	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	319.6K	¥1,046	+34.8%	¥4.1B ($26.6M)
2023-07-06	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	56.9K	¥1,046	-34.8%	¥3.5B ($22.7M)
2023-07-06	BUY	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	4.3M	¥1,046	-34.8%	¥4.5B ($29.3M)
2023-06-06	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	261.4K	¥1,026	+33.5%	¥104M ($669K)
2023-06-06	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	1.9M	¥1,026	+33.5%	¥2.7B ($17.6M)
2023-06-06	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	3.6M	¥1,026	+33.5%	¥1.2B ($7.6M)
2023-06-06	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	505.4K	¥1,026	+33.5%	¥1.1B ($6.9M)
2023-06-06	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	633.0K	¥1,026	-33.5%	¥104M ($669K)
2023-06-06	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	94.3K	¥1,026	-33.5%	¥9.8B ($63.3M)
2023-06-06	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	4.9M	¥1,026	-33.5%	¥5.0B ($32.5M)
2023-06-06	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	11.9M	¥1,026	+33.5%	¥1.1B ($7.1M)
2023-06-06	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	6.1M	¥1,026	-33.5%	¥1.7B ($10.7M)
2023-06-05	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	22.4M	¥1,034.5	-34.0%	¥1.7B ($10.8M)
2023-06-05	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	4.2M	¥1,034.5	+34.0%	¥6.1B ($39.1M)
2023-06-05	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	39.8K	¥1,034.5	-34.0%	¥2.4B ($15.7M)
2023-05-09	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	13.0M	¥1,017	-32.9%	¥13.2B ($85.4M)

Showing the 50 most recent of 67 filings.

Frequently asked questions

Who has been buying Nihon M&A Center Holdings Inc. stock?: 18 distinct investors have filed 35 disclosed large-shareholding filings in Nihon M&A Center Holdings Inc. (2127), most recently on 2026-05-12. 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 Nihon M&A Center Holdings Inc. have?: Nihon M&A Center Holdings Inc. has 35 buy-side and 24 sell-side disclosures on record, covering ¥171.8B ($1.1B) in total reported value, spanning 2021-09-15 to 2026-05-12.
Where does StockDrifts get Nihon M&A Center Holdings 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 Nihon M&A Center Holdings Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.