Who has been buying Nippon Kinzoku Co., Ltd. stock?

6 distinct investors have filed 7 disclosed large-shareholding filings in Nippon Kinzoku Co., Ltd. (5491), most recently on 2026-01-19. 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 Nippon Kinzoku Co., Ltd. have?

Nippon Kinzoku Co., Ltd. has 7 buy-side and 5 sell-side disclosures on record, covering ¥750M ($4.8M) in total reported value, spanning 2022-03-04 to 2026-01-19.

Where does StockDrifts get Nippon Kinzoku 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.

Nippon Kinzoku Co., Ltd. 5491

Company

日本金属株式会社Nippon Kinzoku Co., Ltd.

Investors

Buys

Total Value

¥750M ($4.8M)

Avg Return

+25.59%

Last Filing

2026-01-19

Nippon Kinzoku Co., Ltd. (5491) has 7 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥750M ($4.8M) in reported transaction value. The earliest filing StockDrifts holds for Nippon Kinzoku Co., Ltd. is dated 2022-03-04; the most recent is 2026-01-19. 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 +25.59%, 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
2026-07-22	BUY	Market Buy	日本金属取引先持株会理事長五箇一善 NIPPONKINZOKU CLIENT STOCK OWNERSHIP CHAIRMAN KAZUYOSHI GOKA	strategic	742.4K	¥898	+4.1%	¥64M ($411K)
2026-06-16	SELL	unknown	日本製鉄株式会社 NIPPON STEEL CORPORATION	unknown	0	¥822	-4.4%	¥355M ($2.3M)
2026-01-19	SELL	Market Buy	山本知宏 Yamamoto Tomohiro	passive	264.2K	¥1,000	+0.4%	¥72M ($467K)
2025-11-10	BUY	negotiated	日本製鉄株式会社 NIPPON STEEL CORPORATION	strategic	431.3K	¥799	+24.7%	¥190M ($1.2M)
2025-07-30	BUY	negotiated	日本製鉄株式会社 NIPPON STEEL CORPORATION	strategic	669.4K	¥727	+37.0%	¥118M ($764K)
2025-04-07	BUY	negotiated	日本製鉄株式会社 NIPPON STEEL CORPORATION	strategic	832.4K	¥532	+87.2%	¥443M ($2.9M)
2025-04-07	SELL	negotiated	日鉄ステンレス株式会社 Nippon Steel Stainless Steel Corporation	strategic	0	¥532	-87.2%	¥464M ($3.0M)
2024-12-23	BUY	Market Buy	日本金属取引先持株会理事長五箇一善 NIPPONKINZOKU CLIENT STOCK OWNERSHIP CHAIRMAN KAZUYOSHI GOKA	strategic	671.6K	¥630	+58.1%	¥44M ($283K)
2024-10-02	BUY	Market Buy	山本知宏 Yamamoto Tomohiro	passive	329.2K	¥680	+46.5%	¥5M ($32K)
2024-10-02	BUY	Market Buy	山本知宏 Yamamoto Tomohiro	passive	336.3K	¥680	+46.5%	¥229M ($1.5M)
2024-10-02	BUY	acquisition	山本知宏 Yamamoto Tomohiro	passive	336.3K	¥680	+46.5%	¥229M ($1.5M)
2024-10-02	BUY	Market Buy	山本知宏 Yamamoto Tomohiro	passive	329.2K	¥680	+46.5%	¥5M ($32K)
2023-05-09	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	48.9K	¥966	-3.1%	¥28M ($180K)
2023-05-09	BUY	unknown	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	245.4K	¥966	+3.1%	¥234M ($1.5M)
2022-05-19	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	78.0K	¥1,108	+10.1%	¥2M ($14K)
2022-05-19	SELL	unknown	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	295.0K	¥1,108	+10.1%	¥7M ($43K)
2022-03-04	BUY	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	79.5K	¥1,446	-31.1%	¥24M ($156K)
2022-03-04	BUY	Market Buy	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	300.8K	¥1,446	-31.1%	¥22M ($144K)

Frequently asked questions

Who has been buying Nippon Kinzoku Co., Ltd. stock?: 6 distinct investors have filed 7 disclosed large-shareholding filings in Nippon Kinzoku Co., Ltd. (5491), most recently on 2026-01-19. 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 Nippon Kinzoku Co., Ltd. have?: Nippon Kinzoku Co., Ltd. has 7 buy-side and 5 sell-side disclosures on record, covering ¥750M ($4.8M) in total reported value, spanning 2022-03-04 to 2026-01-19.
Where does StockDrifts get Nippon Kinzoku 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 Nippon Kinzoku Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.