Who has been buying Kobe Steel, Ltd. stock?

19 distinct investors have filed 40 disclosed large-shareholding filings in Kobe Steel, Ltd. (5406), most recently on 2026-05-11. 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 Kobe Steel, Ltd. have?

Kobe Steel, Ltd. has 40 buy-side and 35 sell-side disclosures on record, covering ¥104.7B ($675.5M) in total reported value, spanning 2021-10-21 to 2026-05-11.

Where does StockDrifts get Kobe Steel, 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.

Kobe Steel, Ltd. 5406

Company

株式会社神戸製鋼所Kobe Steel, Ltd.

Investors

Buys

Total Value

¥104.7B ($675.5M)

Avg Return

+50.09%

Last Filing

2026-05-11

Kobe Steel, Ltd. (5406) has 40 disclosed large-shareholding filings and 35 disclosed disposals on record, filed by 19 distinct investors. Together those filings cover ¥104.7B ($675.5M) in reported transaction value. The earliest filing StockDrifts holds for Kobe Steel, Ltd. is dated 2021-10-21; the most recent is 2026-05-11. 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 +50.09%, 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
2026-05-21	SELL	unknown	野村證券株式会社	other	9.4M	¥1,930	-0.3%	¥5.9B ($38.0M)
2026-05-21	SELL	unknown	野村アセットマネジメント株式会社	other	25.2M	¥1,930	-0.3%	¥1.5B ($9.4M)
2026-05-21	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.1M	¥1,930	+0.3%	¥5.7B ($37.0M)
2026-05-11	BUY	Market Buy	野村アセットマネジメント株式会社	other	25.3M	¥2,012	-3.8%	¥4.2B ($27.3M)
2026-05-11	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-1.9M	¥2,012	+3.8%	¥5.7B ($37.0M)
2026-05-11	BUY	Market Buy	野村證券株式会社	other	12.5M	¥2,012	-3.8%	¥3.0B ($19.6M)
2026-05-08	SELL	negotiated	株式会社三菱UFJ銀行	strategic	1.2M	¥1,937	+0.1%	¥768M ($5.0M)
2026-05-08	SELL	unknown	三菱UFJモルガン・スタンレー証券株式会社	other	146.2K	¥1,937	+0.1%	¥768M ($5.0M)
2026-05-08	SELL	Market Buy	三菱UFJアセットマネジメント株式会社	passive	6.9M	¥1,937	+0.1%	¥2.1B ($13.4M)
2026-05-08	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	9.1M	¥1,937	+0.1%	¥3.9B ($25.3M)
2026-01-08	BUY	Market Buy	野村アセットマネジメント株式会社	other	23.2M	¥2,128.5	-9.2%	¥44.9B ($289.8M)
2026-01-08	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	966.3K	¥2,128.5	+9.2%	¥1.9B ($12.1M)
2026-01-08	BUY	Market Buy	野村證券株式会社	other	11.0M	¥2,128.5	-9.2%	¥21.3B ($137.2M)
2025-12-22	SELL	unknown	野村アセットマネジメント株式会社	other	20.4M	¥2,023.5	+4.4%	¥39.5B ($254.6M)
2025-12-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.1M	¥2,023.5	+4.4%	¥2.2B ($14.3M)
2025-12-22	SELL	unknown	野村證券株式会社	other	8.4M	¥2,023.5	+4.4%	¥16.3B ($105.3M)
2025-11-07	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	22.7M	¥1,827	+5.8%	¥3.3B ($21.0M)
2025-11-07	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.3M	¥1,827	+5.8%	¥2.4B ($15.3M)
2025-11-07	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	11.0M	¥1,827	+5.8%	¥1.7B ($10.7M)
2025-04-03	BUY	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	3.4M	¥1,674	+15.5%	¥5.7B ($36.8M)
2025-04-03	BUY	Market Buy	ブラックロック・アセット・マネジメント・ドイチェランド・アーゲー BlackRock Asset Management Deutschland AG	passive	441.9K	¥1,674	+15.5%	¥740M ($4.8M)
2025-04-03	BUY	Market Buy	アイ・シェアーズ(デーエー)・アインツ・インベストメントアクティエンゲゼルシャフト・ミット・タイルゲゼルシャフツフェアメーゲンI Investmentaktiengesellschaft mit Teilgesellschaftsvermogen) iShares (DE	passive	2.5M	¥1,674	+15.5%	¥4.3B ($27.5M)
2025-04-03	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	4.9M	¥1,674	+15.5%	¥8.3B ($53.3M)
2025-04-03	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	1.4M	¥1,674	+15.5%	¥2.3B ($14.6M)
2025-04-03	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	7.7M	¥1,674	+15.5%	¥12.8B ($82.9M)
2025-01-09	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	20.9M	¥1,553	+24.5%	¥1.8B ($11.5M)
2025-01-09	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.3M	¥1,553	+24.5%	¥2.0B ($12.9M)
2025-01-09	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	10.1M	¥1,553	+24.5%	¥923M ($6.0M)
2024-11-07	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	19.8M	¥1,721	-12.3%	¥1.2B ($7.9M)
2024-11-07	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.3M	¥1,721	-12.3%	¥1.8B ($11.4M)
2024-11-07	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	9.5M	¥1,721	+12.3%	¥1.1B ($7.0M)
2024-11-05	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	568.4K	¥1,653.5	-16.9%	¥7.1B ($46.1M)
2024-11-05	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	7.9M	¥1,653.5	-16.9%	¥918M ($5.9M)
2024-11-05	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	11.1M	¥1,653.5	-16.9%	¥131M ($846K)
2024-11-05	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.6M	¥1,653.5	+16.9%	¥2.7B ($17.3M)
2024-10-04	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	20.5M	¥1,730.5	+11.7%	¥7.0B ($45.1M)
2024-10-04	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.3M	¥1,730.5	+11.7%	¥686M ($4.4M)
2024-10-04	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	8.8M	¥1,730.5	+11.7%	¥549M ($3.5M)
2024-09-30	BUY	Market Buy	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	4.9M	¥1,711.5	+13.0%	¥7.6B ($49.0M)
2024-09-30	BUY	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	8.5M	¥1,711.5	+13.0%	¥2.0B ($13.1M)
2024-09-30	BUY	Market Buy	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.6M	¥1,711.5	+13.0%	¥2.8B ($17.9M)
2024-09-30	BUY	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	11.2M	¥1,711.5	+13.0%	¥68M ($438K)
2024-07-01	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	440.6K	¥2,018	+4.2%	¥3.0B ($19.1M)
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	7.3M	¥2,018	-4.2%	¥8.1B ($52.1M)
2024-07-01	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	11.1M	¥2,018	+4.2%	¥3.4B ($22.2M)
2024-07-01	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.6M	¥2,018	+4.2%	¥1.0B ($6.7M)
2024-02-21	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	16.5M	¥2,036	-5.0%	¥807M ($5.2M)
2024-02-21	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.9M	¥2,036	+5.0%	¥2.0B ($13.0M)
2024-02-21	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	8.5M	¥2,036	-5.0%	¥403M ($2.6M)
2023-12-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	16.0M	¥1,725	+12.1%	¥27.7B ($178.5M)

Showing the 50 most recent of 87 filings.

Frequently asked questions

Who has been buying Kobe Steel, Ltd. stock?: 19 distinct investors have filed 40 disclosed large-shareholding filings in Kobe Steel, Ltd. (5406), most recently on 2026-05-11. 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 Kobe Steel, Ltd. have?: Kobe Steel, Ltd. has 40 buy-side and 35 sell-side disclosures on record, covering ¥104.7B ($675.5M) in total reported value, spanning 2021-10-21 to 2026-05-11.
Where does StockDrifts get Kobe Steel, 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 Kobe Steel, Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.