Who has been buying Nakayama Steel Works, Ltd. stock?

3 distinct investors have filed 0 disclosed large-shareholding filings in Nakayama Steel Works, Ltd. (5408), most recently on 2026-04-06. 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 Nakayama Steel Works, Ltd. have?

Nakayama Steel Works, Ltd. has 0 buy-side and 8 sell-side disclosures on record, spanning 2021-05-06 to 2026-04-06.

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.

Nakayama Steel Works, Ltd. 5408

Company

株式会社中山製鋼所Nakayama Steel Works, Ltd.

Investors

Buys

Total Value

—

Avg Return

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Last Filing

2026-04-06

Nakayama Steel Works, Ltd. (5408) has 0 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 3 distinct investors. The earliest filing StockDrifts holds for Nakayama Steel Works, Ltd. is dated 2021-05-06; the most recent is 2026-04-06.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-04-06	BUY	unknown	エア・ウォーター株式会社 AIR WATER INC.	strategic	4.7M	¥643	-	-
2022-12-14	SELL	unknown	日本製鉄株式会社 NIPPON STEEL CORPORATION	unknown	0	¥765	+15.6%	¥4.2B ($27.1M)
2022-12-09	SELL	negotiated	日本製鉄株式会社 NIPPON STEEL CORPORATION	strategic	5.5M	¥735	+12.1%	¥505M ($3.3M)
2022-01-20	SELL	negotiated	日鉄物産株式会社 NIPPON STEEL TRADING CORPORATION	strategic	2.6M	¥425	-52.0%	¥284M ($1.8M)
2021-09-24	SELL	negotiated	日鉄物産株式会社 NIPPON STEEL TRADING CORPORATION	strategic	3.3M	¥438	-47.5%	¥334M ($2.2M)
2021-09-15	SELL	negotiated	日鉄物産株式会社 NIPPON STEEL TRADING CORPORATION	strategic	4.0M	¥452	-42.9%	¥316M ($2.0M)
2021-09-09	SELL	negotiated	日鉄物産株式会社 NIPPON STEEL TRADING CORPORATION	strategic	4.7M	¥450	-43.6%	¥301M ($1.9M)
2021-06-10	SELL	negotiated	日本製鉄株式会社 NIPPON STEEL CORPORATION	strategic	6.2M	¥430	-50.2%	¥673M ($4.3M)
2021-05-31	BUY	unknown	エア・ウォーター株式会社 AIR WATER INC.	strategic	4.7M	¥414	-	-
2021-05-31	BUY	unknown	エア・ウォーター株式会社 AIR WATER INC.	strategic	4.7M	¥414	-	¥2.0B ($12.6M)
2021-05-06	SELL	negotiated	日本製鉄株式会社 NIPPON STEEL CORPORATION	strategic	7.7M	¥443	-45.8%	¥279M ($1.8M)

Frequently asked questions

Who has been buying Nakayama Steel Works, Ltd. stock?: 3 distinct investors have filed 0 disclosed large-shareholding filings in Nakayama Steel Works, Ltd. (5408), most recently on 2026-04-06. 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 Nakayama Steel Works, Ltd. have?: Nakayama Steel Works, Ltd. has 0 buy-side and 8 sell-side disclosures on record, spanning 2021-05-06 to 2026-04-06.
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.