StockDriftsStockDriftsThe Japan Steel Works, Ltd. (5631) has 36 disclosed large-shareholding filings and 36 disclosed disposals on record, filed by 15 distinct investors. Together those filings cover ¥222.0B ($1.4B) in reported transaction value. The earliest filing StockDrifts holds for The Japan Steel Works, Ltd. is dated 2021-09-13; the most recent is 2026-03-17. 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 +120.34%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-06-24 | BUY | block_purchase | 野村アセットマネジメント株式会社 | other | 11.1M | ¥8,029 | -8.6% | ¥5.9B ($37.8M) |
| 2026-06-24 | BUY | Market Buy | 野村證券株式会社 | other | 282.4K | ¥8,029 | -8.6% | ¥1.3B ($8.1M) |
| 2026-06-09 | BUY | block_purchase | 野村アセットマネジメント株式会社 | other | 10.4M | ¥7,292 | +8.9% | ¥5.6B ($36.1M) |
| 2026-06-09 | BUY | unknown | 野村證券株式会社 | other | 129.9K | ¥7,292 | +8.9% | ¥947M ($6.1M) |
| 2026-05-21 | SELL | unknown | アモーヴァ・アセットマネジメント株式会社 | other | 3.4M | ¥7,742 | +2.5% | ¥2.4B ($15.2M) |
| 2026-05-21 | SELL | unknown | 三井住友トラスト・アセットマネジメント株式会社 | other | 1.4M | ¥7,742 | +2.5% | ¥1.2B ($7.8M) |
| 2026-05-21 | SELL | negotiated | 三井住友信託銀行株式会社 | strategic | 489.1K | ¥7,742 | +2.5% | ¥2.5B ($16.4M) |
| 2026-03-17 | BUY | Market Buy | 野村アセットマネジメント株式会社 | other | 9.6M | ¥9,649 | -5.4% | ¥87.8B ($566.7M) |
| 2026-03-17 | 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 | -64.2K | ¥9,649 | +5.4% | ¥586M ($3.8M) |
| 2025-12-05 | BUY | unknown | ナショナル ファイナンシャル サービス エルエルシー National Financial Services LLC | other | 75 | ¥9,115 | -0.2% | ¥685K ($4K) |
| 2025-12-05 | SELL | unknown | エフエムアール エルエルシー FMR LLC | other | 2.9M | ¥9,115 | -0.2% | ¥26.6B ($171.3M) |
| 2025-11-14 | 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 | 8.9M | ¥9,534 | -4.3% | ¥8.2B ($52.6M) |
| 2025-11-14 | 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 | 276.9K | ¥9,534 | -4.3% | ¥2.0B ($12.8M) |
| 2025-11-14 | SELL | Market Buy | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 11.7K | ¥9,534 | +4.3% | ¥2.7B ($17.4M) |
| 2025-11-07 | SELL | negotiated | アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd. | other | 3.7M | ¥8,787 | -3.9% | ¥6.0B ($38.8M) |
| 2025-11-07 | 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 | 1.5M | ¥8,787 | -3.9% | ¥719M ($4.6M) |
| 2025-11-07 | BUY | negotiated | 三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited | strategic | 815.2K | ¥8,787 | +3.9% | ¥7.2B ($46.2M) |
| 2025-10-02 | 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 | 1.6M | ¥8,640 | +5.7% | ¥257M ($1.7M) |
| 2025-10-02 | BUY | negotiated | 三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited | strategic | 815.2K | ¥8,640 | +5.7% | ¥7.0B ($45.4M) |
| 2025-10-02 | SELL | negotiated | アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd. | other | 4.4M | ¥8,640 | -5.7% | ¥6.6B ($42.7M) |
| 2025-09-05 | BUY | Market Buy | アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd. | other | 5.1M | ¥8,878 | +2.8% | ¥991M ($6.4M) |
| 2025-09-05 | SELL | 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 | 1.6M | ¥8,878 | -2.8% | ¥198M ($1.3M) |
| 2025-09-05 | BUY | Market Buy | 三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited | strategic | 815.2K | ¥8,878 | +2.8% | ¥7.2B ($46.7M) |
| 2025-08-22 | BUY | unknown | ナショナル ファイナンシャル サービス エルエルシー National Financial Services LLC | other | 78 | ¥9,034 | +1.1% | ¥705K ($5K) |
| 2025-08-22 | BUY | unknown | エフエムアール エルエルシー FMR LLC | other | 3.8M | ¥9,034 | +1.1% | ¥34.7B ($223.9M) |
| 2025-07-24 | SELL | Market Buy | ジェイ・オー・ハンブロ・キャピタル・マネージメント・リミテッド(J O Hambro Capital Management Limited) J O Hambro Capital Management Limited | passive | 2.9M | ¥9,379 | +2.7% | ¥8.1B ($52.2M) |
| 2025-07-24 | BUY | acquisition | ジェイ・オー・ハンブロ・キャピタル・マネージメント・リミテッド(J O Hambro Capital Management Limited) J O Hambro Capital Management Limited | passive | 3.7M | ¥9,379 | -2.7% | ¥35.0B ($226.0M) |
| 2025-05-13 | BUY | Market Buy | ジェイオーエイチシーエム(シンガポール)・ピーティーイー・リミテッド(JOHCM (Singapore) Pte. Limited) JOHCM (Singapore) Pte. Limited | passive | 2.9M | ¥6,120 | +49.2% | ¥5.3B ($34.1M) |
| 2025-05-13 | SELL | Market Buy | ジェイオーエイチシーエム(シンガポール)・ピーティーイー・リミテッド(JOHCM (Singapore) Pte. Limited) JOHCM (Singapore) Pte. Limited | passive | 2.9M | ¥6,120 | -49.2% | ¥5.3B ($34.1M) |
| 2025-03-12 | BUY | Market Buy | ジェイオーエイチシーエム(シンガポール)・ピーティーイー・リミテッド(JOHCM (Singapore) Pte. Limited) JOHCM (Singapore) Pte. Limited | passive | 3.7M | ¥5,589 | +63.3% | ¥20.9B ($134.7M) |
| 2025-03-12 | BUY | acquisition | ジェイオーエイチシーエム(シンガポール)・ピーティーイー・リミテッド(JOHCM (Singapore) Pte. Limited) JOHCM (Singapore) Pte. Limited | passive | 3.7M | ¥5,589 | +63.3% | ¥20.9B ($134.7M) |
| 2025-01-08 | BUY | negotiated | 日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd. | other | 5.0M | ¥5,866 | +55.6% | ¥87M ($563K) |
| 2025-01-08 | 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 | 1.6M | ¥5,866 | -55.6% | ¥2.8B ($18.3M) |
| 2025-01-08 | SELL | negotiated | 三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited | strategic | 815.2K | ¥5,866 | -55.6% | ¥1.9B ($12.1M) |
| 2024-10-31 | SELL | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 8.0M | ¥5,266 | -73.4% | ¥1.9B ($12.1M) |
| 2024-10-31 | BUY | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | 66.7K | ¥5,266 | +73.4% | ¥33.1B ($213.9M) |
| 2024-10-31 | SELL | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 298.1K | ¥5,266 | -73.4% | ¥27.4B ($177.0M) |
| 2024-10-22 | BUY | unknown | アセットマネジメントOneインターナショナル Asset Management One International Ltd. | other | 233.2K | ¥5,365 | +70.2% | ¥1.3B ($8.1M) |
| 2024-10-22 | BUY | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 3.2M | ¥5,365 | +70.2% | ¥17.2B ($111.0M) |
| 2024-10-22 | BUY | unknown | みずほ証券 株式会社 Mizuho Securities Co., Ltd. | other | 301.1K | ¥5,365 | +70.2% | ¥1.6B ($10.4M) |
| 2024-05-08 | SELL | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 352.5K | ¥3,796 | -140.5% | ¥1.2B ($8.0M) |
| 2024-05-08 | BUY | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 8.4M | ¥3,796 | +140.5% | ¥2.9B ($18.9M) |
| 2024-05-08 | BUY | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | 403.8K | ¥3,796 | +140.5% | ¥1.0B ($6.7M) |
| 2024-04-24 | BUY | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 7.6M | ¥3,845 | +137.4% | ¥3.2B ($20.5M) |
| 2024-04-24 | SELL | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | 125.2K | ¥3,845 | -137.4% | ¥31.0B ($199.9M) |
| 2024-04-24 | SELL | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 673.4K | ¥3,845 | -137.4% | ¥57M ($369K) |
| 2024-04-15 | BUY | Market Buy | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 689.5K | ¥3,921 | +132.8% | ¥1.2B ($7.9M) |
| 2024-04-15 | 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 | 6.8M | ¥3,921 | +132.8% | ¥2.9B ($18.6M) |
| 2024-04-15 | 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 | 85.3K | ¥3,921 | -132.8% | ¥1.2B ($7.5M) |
| 2024-03-21 | BUY | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 6.0M | ¥3,041 | +200.2% | ¥3.1B ($20.3M) |
Showing the 50 most recent of 98 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 The Japan Steel Works, Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.