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

11 distinct investors have filed 11 disclosed large-shareholding filings in Nittoseiko Co.,Ltd. (5957), most recently on 2026-02-06. 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 Nittoseiko Co.,Ltd. have?

Nittoseiko Co.,Ltd. has 11 buy-side and 12 sell-side disclosures on record, covering ¥1.8B ($11.5M) in total reported value, spanning 2021-08-03 to 2026-02-06.

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.

Nittoseiko Co.,Ltd. 5957

Company

日東精工株式会社Nittoseiko Co.,Ltd.

Investors

Buys

Total Value

¥1.8B ($11.5M)

Avg Return

+26.64%

Last Filing

2026-02-06

Nittoseiko Co.,Ltd. (5957) has 11 disclosed large-shareholding filings and 12 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥1.8B ($11.5M) in reported transaction value. The earliest filing StockDrifts holds for Nittoseiko Co.,Ltd. is dated 2021-08-03; the most recent is 2026-02-06. Across these filings the average return since disclosure is +26.64%, 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
2026-06-15	SELL	negotiated	株式会社三菱UFJ銀行	strategic	332.0K	¥776	+0.3%	¥369M ($2.4M)
2026-06-15	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	217.6K	¥776	-0.3%	¥3M ($20K)
2026-06-15	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	1.1M	¥776	+0.3%	¥90M ($581K)
2026-02-06	SELL	unknown	ＳＭＢＣ日興証券株式会社 SMBC Nikko Securities Inc.	other	1.6M	¥738	-4.9%	¥767M ($4.9M)
2026-01-19	SELL	negotiated	株式会社三菱UFJ銀行	strategic	809.6K	¥748	-3.5%	¥203M ($1.3M)
2026-01-19	SELL	negotiated	三菱UFJ信託銀行株式会社	passive	1.3M	¥748	-3.5%	¥135M ($868K)
2026-01-19	BUY	negotiated	三菱UFJアセットマネジメント株式会社	passive	210.7K	¥748	+3.5%	¥9M ($58K)
2025-12-05	BUY	unknown	SMBC日興証券株式会社	other	1.3M	¥690	+12.2%	¥889M ($5.7M)
2025-12-05	BUY	unknown	三井住友DSアセットマネジメント株式会社	passive	1.3M	¥690	+12.2%	¥903M ($5.8M)
2025-12-03	BUY	unknown	日東精工協友会理事長小澤秀樹 NITTOSEIKO KYOYUKAI	strategic	1.4M	¥687	-	¥1.3B ($8.4M)
2025-12-03	SELL	unknown	日東精工協友会理事長小澤秀樹 NITTOSEIKO KYOYUKAI	strategic	1.4M	¥687	-12.7%	¥1.3B ($8.4M)
2025-06-30	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.1M	¥572	-35.3%	¥153M ($989K)
2025-06-30	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.4M	¥572	-35.3%	¥160M ($1.0M)
2025-06-30	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	198.5K	¥572	-	-
2024-12-05	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	787.7K	¥624	-24.0%	¥267M ($1.7M)
2024-12-05	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	486.9K	¥624	+24.0%	¥40M ($258K)
2024-12-05	SELL	negotiated	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	680.9K	¥624	-24.0%	¥25M ($161K)
2024-11-18	BUY	Market Buy	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.3M	¥584	-	-
2024-11-18	BUY	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.7M	¥584	+32.5%	¥236M ($1.5M)
2024-11-18	SELL	Market Buy	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	199.5K	¥584	-32.5%	¥2M ($15K)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.3M	¥611	-	-
2024-07-29	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.3M	¥611	+26.7%	¥22M ($142K)
2024-07-29	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	204.0K	¥611	-	-
2024-07-01	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.3M	¥585	-	-
2024-07-01	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.3M	¥585	+32.3%	¥196M ($1.3M)
2024-07-01	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	203.3K	¥585	+32.3%	¥70M ($453K)
2024-07-01	SELL	negotiated	三菱UFJ不動産投資顧問株式会社 Mitsubishi UFJ Real Estate Investment Advisors Co., Ltd.	unknown	0	¥585	-32.3%	¥28M ($181K)
2023-10-05	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.2M	¥572	-35.3%	¥240M ($1.5M)
2023-10-05	BUY	negotiated	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	718.7K	¥572	+35.3%	¥57M ($369K)
2023-10-05	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	423.2K	¥572	+35.3%	¥110M ($708K)
2022-04-26	BUY	Market Buy	日東精工協友会理事長小澤秀樹 OZAWA HIDEKI	strategic	3.3M	¥497	+55.7%	¥211M ($1.4M)
2021-08-03	SELL	unknown	グンゼ株式会社 Gunze Limited	other	1.6M	¥648	-19.4%	¥285M ($1.8M)

Frequently asked questions

Who has been buying Nittoseiko Co.,Ltd. stock?: 11 distinct investors have filed 11 disclosed large-shareholding filings in Nittoseiko Co.,Ltd. (5957), most recently on 2026-02-06. 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 Nittoseiko Co.,Ltd. have?: Nittoseiko Co.,Ltd. has 11 buy-side and 12 sell-side disclosures on record, covering ¥1.8B ($11.5M) in total reported value, spanning 2021-08-03 to 2026-02-06.
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.