Who has been buying Mercari, Inc. stock?

19 distinct investors have filed 94 disclosed large-shareholding filings in Mercari, Inc. (4385), most recently on 2026-04-21. 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 Mercari, Inc. have?

Mercari, Inc. has 94 buy-side and 86 sell-side disclosures on record, covering ¥463.1B ($3.0B) in total reported value, spanning 2021-03-19 to 2026-04-21.

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.

Mercari, Inc. 4385

Company

株式会社メルカリMercari, Inc.

Investors

Buys

Total Value

¥463.1B ($3.0B)

Avg Return

+70.31%

Last Filing

2026-04-21

Mercari, Inc. (4385) has 94 disclosed large-shareholding filings and 86 disclosed disposals on record, filed by 19 distinct investors. Together those filings cover ¥463.1B ($3.0B) in reported transaction value. The earliest filing StockDrifts holds for Mercari, Inc. is dated 2021-03-19; the most recent is 2026-04-21. Across these filings the average return since disclosure is +70.31%, 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
2026-07-22	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	1.3M	¥4,417	-17.7%	¥1.3B ($8.5M)
2026-07-22	BUY	Market Buy	野村アセットマネジメント株式会社	other	12.5M	¥4,417	-17.7%	¥1.4B ($8.9M)
2026-04-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	2.4M	¥4,108	+11.5%	¥271M ($1.7M)
2026-04-21	SELL	unknown	アモーヴァ・アセットマネジメント株式会社	other	6.2M	¥4,108	+11.5%	¥68M ($437K)
2026-03-05	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	2.4M	¥3,373	-7.8%	¥2.1B ($13.6M)
2026-03-05	SELL	unknown	アモーヴァ・アセットマネジメント株式会社	other	6.3M	¥3,373	-7.8%	¥1.8B ($11.5M)
2026-02-05	BUY	Market Buy	ノムラ　インターナショナル　ピーエルシー（ＮＯＭＵＲＡ　ＩＮＴＥＲＮＡＴＩＯＮＡＬ　ＰＬＣ） NOMURA INTERNATIONAL PLC	other	13.2M	¥3,141	+15.7%	¥570M ($3.7M)
2026-01-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	3.1M	¥3,002	-21.1%	¥346M ($2.2M)
2026-01-21	SELL	unknown	アモーヴァ・アセットマネジメント株式会社	other	6.8M	¥3,002	-21.1%	¥1.4B ($8.9M)
2026-01-09	BUY	unknown	野村證券株式会社	other	62.6K	¥3,249	+11.9%	¥214M ($1.4M)
2026-01-09	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	103.8K	¥3,249	-11.9%	¥2.2B ($14.2M)
2026-01-09	BUY	unknown	野村アセットマネジメント株式会社	other	13.0M	¥3,249	-	-
2025-12-02	SELL	Market Buy	野村アセットマネジメント株式会社	other	13.0M	¥2,700.5	-34.6%	¥223M ($1.4M)
2025-12-02	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	777.6K	¥2,700.5	+34.6%	¥1.2B ($8.0M)
2025-12-02	SELL	Market Buy	野村證券株式会社	other	6.1K	¥2,700.5	-34.6%	¥45M ($287K)
2025-11-28	SELL	unknown	山田進太郎	strategic	35.4M	¥2,655	-36.9%	¥2.9B ($18.6M)
2025-11-28	BUY	unknown	株式会社suadd	strategic	10.3M	¥2,655	+36.9%	¥2.6B ($16.7M)
2025-11-20	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	3.2M	¥2,490.5	-46.0%	¥1.4B ($9.3M)
2025-11-20	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	7.2M	¥2,490.5	-46.0%	¥4.2B ($27.0M)
2025-11-07	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	13.0K	¥2,224	-63.4%	¥3.9B ($25.3M)
2025-11-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	313.7K	¥2,224	-	¥698M ($4.5M)
2025-11-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	13.1M	¥2,224	+63.4%	¥1.5B ($9.9M)
2025-10-21	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	3.7M	¥2,359.5	-54.1%	¥194M ($1.3M)
2025-10-21	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	8.9M	¥2,359.5	-54.1%	¥155M ($1.0M)
2025-10-06	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	3.8M	¥2,209.5	+64.5%	¥73M ($469K)
2025-10-06	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	9.0M	¥2,209.5	-64.5%	¥36M ($235K)
2025-09-19	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.8M	¥2,268.5	+60.2%	¥4.1B ($26.3M)
2025-09-19	BUY	Market Buy	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	3.8M	¥2,268.5	+60.2%	¥1.3B ($8.7M)
2025-09-19	BUY	Market Buy	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	9.0M	¥2,268.5	+60.2%	¥37M ($241K)
2025-09-19	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	12.4M	¥2,268.5	+60.2%	¥1.6B ($10.4M)
2025-09-19	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	-122.2K	¥2,268.5	-75.3%	¥822M ($5.3M)
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	242.8K	¥2,400	-	¥583M ($3.8M)
2025-09-04	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	11.7M	¥2,400	+51.5%	¥2.3B ($15.0M)
2025-09-04	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	-15.2K	¥2,400	-65.7%	¥7.4B ($47.7M)
2025-08-21	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	3.1M	¥2,253.5	+61.3%	¥6.9B ($44.5M)
2025-08-21	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	10.7M	¥2,253.5	-61.3%	¥779M ($5.0M)
2025-08-21	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	-183.4K	¥2,253.5	-76.5%	¥1.0B ($6.7M)
2025-08-06	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	3.2M	¥2,155	+68.7%	¥177M ($1.1M)
2025-08-06	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	2.5K	¥2,155	-68.7%	¥4.4B ($28.1M)
2025-08-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	11.1M	¥2,155	+68.7%	¥23.6B ($152.3M)
2025-08-06	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	9.0M	¥2,155	-68.7%	¥1.3B ($8.2M)
2025-08-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	276.4K	¥2,155	-	¥596M ($3.8M)
2025-06-19	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	2.0M	¥2,858	+27.2%	¥5.0B ($32.1M)
2025-06-19	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	11.9M	¥2,858	-27.2%	¥3.0B ($19.4M)
2025-05-16	SELL	unknown	山田進太郎 Shintaro Yamada	strategic	36.4M	¥2,343.5	-55.1%	¥6.7B ($43.2M)
2025-05-16	BUY	unknown	株式会社suadd suadd Co., Ltd.	activist	9.3M	¥2,343.5	+55.1%	¥6.5B ($42.0M)
2025-05-08	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-184.8K	¥2,398	-65.8%	¥13.8B ($88.8M)
2025-05-08	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	3.1M	¥2,398	-51.6%	¥39M ($254K)
2025-05-08	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	274.8K	¥2,398	+51.6%	¥35.5B ($228.9M)
2025-05-08	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	9.6M	¥2,398	-51.6%	¥276M ($1.8M)

Showing the 50 most recent of 200 filings.

Frequently asked questions

Who has been buying Mercari, Inc. stock?: 19 distinct investors have filed 94 disclosed large-shareholding filings in Mercari, Inc. (4385), most recently on 2026-04-21. 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 Mercari, Inc. have?: Mercari, Inc. has 94 buy-side and 86 sell-side disclosures on record, covering ¥463.1B ($3.0B) in total reported value, spanning 2021-03-19 to 2026-04-21.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.