Who has been buying NANO MRNA Co.,Ltd. stock?

4 distinct investors have filed 3 disclosed large-shareholding filings in NANO MRNA Co.,Ltd. (4571), 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 NANO MRNA Co.,Ltd. have?

NANO MRNA Co.,Ltd. has 3 buy-side and 14 sell-side disclosures on record, covering ¥6.9B ($44.5M) in total reported value, spanning 2021-05-17 to 2026-04-03.

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.

NANO MRNA Co.,Ltd. 4571

Company

ナノキャリア株式会社NANO MRNA Co.,Ltd.

Investors

Buys

Total Value

¥6.9B ($44.5M)

Avg Return

-31.89%

Last Filing

2026-04-03

NANO MRNA Co.,Ltd. (4571) has 3 disclosed large-shareholding filings and 14 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥6.9B ($44.5M) in reported transaction value. The earliest filing StockDrifts holds for NANO MRNA Co.,Ltd. is dated 2021-05-17; the most recent is 2026-04-03. Across these filings the average return since disclosure is -31.89%, 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
2026-08-27	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	27.5M	¥104	+4.8%	¥104M ($670K)
2026-06-04	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	28.8M	¥108	+8.3%	¥85M ($551K)
2026-04-03	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	29.8M	¥153	+35.3%	¥134M ($867K)
2026-03-12	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	31.0M	¥169	+41.4%	¥169M ($1.1M)
2026-03-04	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	32.0M	¥166	+40.4%	¥147M ($950K)
2026-02-24	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	33.2M	¥184	+46.2%	¥269M ($1.7M)
2026-02-18	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	35.3M	¥170	+41.8%	¥133M ($859K)
2026-01-13	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	36.4M	¥144	+31.3%	¥109M ($703K)
2025-12-12	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	37.5M	¥146	+32.2%	¥144M ($928K)
2025-11-07	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	38.5M	¥158	-37.3%	¥6.1B ($39.3M)
2025-09-30	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	0	¥134	+26.1%	¥1.2B ($7.7M)
2025-09-30	SELL	Market Buy	アクセリード株式会社 Axeleed Co., Ltd.	strategic	0	¥134	+26.1%	¥306M ($2.0M)
2025-09-30	SELL	Market Buy	株式会社IPガイア IP Gaia Co., Ltd.	strategic	0	¥134	+26.1%	¥306M ($2.0M)
2025-09-25	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	10.3M	¥134	+26.1%	¥344M ($2.2M)
2025-09-25	BUY	Market Buy	アクセリード株式会社 Axeleed Co., Ltd.	strategic	2.4M	¥134	-	¥316M ($2.0M)
2025-09-25	BUY	Market Buy	株式会社IPガイア IP Gaia Co., Ltd.	strategic	2.4M	¥134	-	¥316M ($2.0M)
2025-09-25	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	10.3M	¥134	+26.1%	¥344M ($2.2M)
2025-09-25	BUY	Market Buy	アクセリード株式会社 Axeleed Co., Ltd.	strategic	2.4M	¥134	-	-
2025-09-25	BUY	Market Buy	株式会社IPガイア IP Gaia Co., Ltd.	strategic	2.4M	¥134	-	-
2025-01-09	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	13.8M	¥147	+32.6%	¥434M ($2.8M)
2025-01-09	BUY	Market Buy	アクセリード株式会社 Axeleed Co., Ltd.	strategic	2.4M	¥147	-	¥347M ($2.2M)
2025-01-09	BUY	Market Buy	株式会社IPガイア IP Gaia Co., Ltd.	strategic	2.4M	¥147	-	¥347M ($2.2M)
2023-06-19	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	18.0M	¥224	-	-
2023-06-19	BUY	Market Buy	アクセリード株式会社 Axeleed Co., Ltd.	strategic	2.4M	¥224	-	¥528M ($3.4M)
2023-06-19	BUY	Market Buy	株式会社IPガイア IP Gaia Co., Ltd.	strategic	2.4M	¥224	-	¥528M ($3.4M)
2023-02-20	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	18.0M	¥265	-62.6%	¥811M ($5.2M)
2022-01-07	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	13.5M	¥250	+60.4%	¥1.4B ($8.8M)
2021-05-17	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	21.8M	¥277	-64.3%	¥2.6B ($16.6M)

Frequently asked questions

Who has been buying NANO MRNA Co.,Ltd. stock?: 4 distinct investors have filed 3 disclosed large-shareholding filings in NANO MRNA Co.,Ltd. (4571), 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 NANO MRNA Co.,Ltd. have?: NANO MRNA Co.,Ltd. has 3 buy-side and 14 sell-side disclosures on record, covering ¥6.9B ($44.5M) in total reported value, spanning 2021-05-17 to 2026-04-03.
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.