Who has been buying Nichiban Co., Ltd. stock?

8 distinct investors have filed 2 disclosed large-shareholding filings in Nichiban Co., Ltd. (4218), most recently on 2026-03-23. 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 Nichiban Co., Ltd. have?

Nichiban Co., Ltd. has 2 buy-side and 9 sell-side disclosures on record, covering ¥46M ($298K) in total reported value, spanning 2023-01-11 to 2026-03-23.

Where does StockDrifts get Nichiban Co., Ltd. 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.

Nichiban Co., Ltd. 4218

Company

ニチバン株式会社Nichiban Co., Ltd.

Investors

Buys

Total Value

¥46M ($298K)

Avg Return

+4.90%

Last Filing

2026-03-23

Nichiban Co., Ltd. (4218) has 2 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥46M ($298K) in reported transaction value. The earliest filing StockDrifts holds for Nichiban Co., Ltd. is dated 2023-01-11; the most recent is 2026-03-23. 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 +4.90%, 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
2026-03-23	SELL	unknown	アセットマネジメントOne株式会社	other	229.1K	¥1,865	-1.1%	¥432M ($2.8M)
2026-03-23	SELL	unknown	みずほ信託銀行株式会社	strategic	150.0K	¥1,865	-1.1%	¥283M ($1.8M)
2026-03-23	BUY	unknown	みずほ証券株式会社	other	22.9K	¥1,865	-1.1%	¥43M ($278K)
2026-03-23	SELL	unknown	株式会社みずほ銀行	strategic	800.0K	¥1,865	-1.1%	¥1.5B ($9.7M)
2024-07-29	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	27.3K	¥1,912	-1.4%	¥52M ($337K)
2024-07-29	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	49.9K	¥1,912	+1.4%	¥44M ($281K)
2024-07-29	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	232.8K	¥1,912	-1.4%	¥4M ($26K)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	870.0K	¥1,912	-1.4%	¥1.7B ($10.7M)
2023-12-18	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	870.0K	¥1,695	-11.2%	¥278M ($1.8M)
2023-12-18	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	20.6K	¥1,695	-11.2%	¥42M ($272K)
2023-12-18	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	73.5K	¥1,695	+11.2%	¥42M ($272K)
2023-12-18	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	231.1K	¥1,695	-11.2%	¥105M ($680K)
2023-01-11	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	186.5K	¥1,833	+2.8%	¥342M ($2.2M)
2023-01-11	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.0M	¥1,833	-2.8%	¥65M ($417K)
2023-01-11	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	235.7K	¥1,833	-2.8%	¥342M ($2.2M)

Frequently asked questions

Who has been buying Nichiban Co., Ltd. stock?: 8 distinct investors have filed 2 disclosed large-shareholding filings in Nichiban Co., Ltd. (4218), most recently on 2026-03-23. 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 Nichiban Co., Ltd. have?: Nichiban Co., Ltd. has 2 buy-side and 9 sell-side disclosures on record, covering ¥46M ($298K) in total reported value, spanning 2023-01-11 to 2026-03-23.
Where does StockDrifts get Nichiban Co., Ltd. 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 Nichiban Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.