Who has been buying Nozawa Corporation stock?

4 distinct investors have filed 4 disclosed large-shareholding filings in Nozawa Corporation (5237), most recently on 2026-03-06. 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 Nozawa Corporation have?

Nozawa Corporation has 4 buy-side and 0 sell-side disclosures on record, covering ¥1.3B ($8.2M) in total reported value, spanning 2021-04-07 to 2026-03-06.

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.

Nozawa Corporation 5237

Company

株式会社ノザワNozawa Corporation

Investors

Buys

Total Value

¥1.3B ($8.2M)

Avg Return

+42.86%

Last Filing

2026-03-06

Nozawa Corporation (5237) has 4 disclosed large-shareholding filings and 0 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥1.3B ($8.2M) in reported transaction value. The earliest filing StockDrifts holds for Nozawa Corporation is dated 2021-04-07; the most recent is 2026-03-06. Across these filings the average return since disclosure is +42.86%, 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
2026-08-06	BUY	unknown	ノザワ取引先持株会理事長玉井章友 nozawatorihikisakimochikabukai rijichyou tamai akitomo	other	749.3K	¥1,211	+0.0%	¥907M ($5.9M)
2026-08-06	SELL	unknown	ノザワ取引先持株会理事長土井正太郎 nozawatorihikisakimotikabukai rijichyou doi masatarou	other	0	¥1,211	+0.0%	¥899M ($5.8M)
2026-07-07	BUY	Market Buy	土井正太郎 DOI MASATAROU	other	742.7K	¥1,225	-1.1%	¥164M ($1.1M)
2026-07-07	BUY	unknown	ノザワ取引先持株会理事長土井正太郎 NOZAWATORIHIKISAKIMOCHIKABUKAI RIJICHYO DOI MASATAROU	other	742.7K	¥1,225	-	¥164M ($1.1M)
2026-03-06	BUY	Market Buy	有限会社キャピタル・マネジメント Capital Management	activist	604.0K	¥1,180	+2.6%	¥713M ($4.6M)
2025-05-22	BUY	unknown	ノザワ取引先持株会理事長土井正太郎 Masatarou Doi	other	608.1K	¥851	+42.3%	¥517M ($3.3M)
2021-04-07	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	567.8K	¥729	+66.1%	¥414M ($2.7M)
2021-04-07	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	46.4K	¥729	+66.1%	¥34M ($218K)

Frequently asked questions

Who has been buying Nozawa Corporation stock?: 4 distinct investors have filed 4 disclosed large-shareholding filings in Nozawa Corporation (5237), most recently on 2026-03-06. 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 Nozawa Corporation have?: Nozawa Corporation has 4 buy-side and 0 sell-side disclosures on record, covering ¥1.3B ($8.2M) in total reported value, spanning 2021-04-07 to 2026-03-06.
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.