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Nakayama Steel Works, Ltd. 5408

Company
株式会社中山製鋼所Nakayama Steel Works, Ltd.
Investors
3
Buys
0
Total Value
—
Avg Return
—
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. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan).

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-04-06BUYunknown
エア・ウォーター株式会社
AIR WATER INC.
strategic4.7M¥643-4.8%¥3.0B ($19.6M)
2022-12-14SELLunknown
日本製鉄株式会社
NIPPON STEEL CORPORATION
unknown0¥765+17.6%¥4.2B ($27.1M)
2022-12-09SELLnegotiated
日本製鉄株式会社
NIPPON STEEL CORPORATION
strategic5.5M¥735+14.3%¥505M ($3.3M)
2022-01-20SELLnegotiated
日鉄物産株式会社
NIPPON STEEL TRADING CORPORATION
strategic2.6M¥425-48.2%¥284M ($1.8M)
2021-09-24SELLnegotiated
日鉄物産株式会社
NIPPON STEEL TRADING CORPORATION
strategic3.3M¥438-43.8%¥334M ($2.2M)
2021-09-15SELLnegotiated
日鉄物産株式会社
NIPPON STEEL TRADING CORPORATION
strategic4.0M¥452-39.4%¥316M ($2.0M)
2021-09-09SELLnegotiated
日鉄物産株式会社
NIPPON STEEL TRADING CORPORATION
strategic4.7M¥450-40.0%¥301M ($1.9M)
2021-06-10SELLnegotiated
日本製鉄株式会社
NIPPON STEEL CORPORATION
strategic6.2M¥430-46.5%¥673M ($4.3M)
2021-05-31BUYunknown
エア・ウォーター株式会社
AIR WATER INC.
strategic4.7M¥414+52.2%¥2.0B ($12.6M)
2021-05-31BUYunknown
エア・ウォーター株式会社
AIR WATER INC.
strategic4.7M¥414+52.2%¥2.0B ($12.6M)
2021-05-06SELLnegotiated
日本製鉄株式会社
NIPPON STEEL CORPORATION
strategic7.7M¥443-42.2%¥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.
Where does StockDrifts get Nakayama Steel Works, 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 Nakayama Steel Works, Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.