StockDriftsStockDriftsNPR-Riken Corporation (6209) has 26 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 15 distinct investors. Together those filings cover ¥13.9B ($89.5M) in reported transaction value. The earliest filing StockDrifts holds for NPR-Riken Corporation is dated 2023-10-19; the most recent is 2026-05-08. Across these filings the average return since disclosure is +69.71%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-05-08 | BUY | negotiated | 株式会社三菱UFJ銀行 | strategic | 510.7K | ¥3,930 | - | - |
| 2026-05-08 | SELL | Market Buy | 三菱UFJ信託銀行株式会社 | passive | 734.2K | ¥3,930 | -1.0% | ¥755M ($4.9M) |
| 2026-05-08 | SELL | Market Buy | 三菱UFJアセットマネジメント株式会社 | passive | 167.5K | ¥3,930 | -1.0% | ¥344M ($2.2M) |
| 2026-05-08 | SELL | unknown | 三菱UFJモルガン・スタンレー証券株式会社 | other | 2.5K | ¥3,930 | -1.0% | ¥144M ($931K) |
| 2025-09-19 | 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 | 524.2K | ¥3,120 | -27.2% | ¥18M ($114K) |
| 2025-09-19 | BUY | negotiated | 三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited | strategic | 523.4K | ¥3,120 | - | - |
| 2025-09-19 | 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 | 424.3K | ¥3,120 | -27.2% | ¥203M ($1.3M) |
| 2025-04-04 | 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 | 489.8K | ¥2,168 | +83.1% | ¥6M ($40K) |
| 2025-04-04 | BUY | Market Buy | 三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited | strategic | 523.4K | ¥2,168 | - | - |
| 2025-04-04 | 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 | 529.9K | ¥2,168 | +83.1% | ¥6M ($40K) |
| 2025-03-31 | BUY | Market Buy | 株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc. | strategic | 510.7K | ¥2,493 | - | - |
| 2025-03-31 | BUY | Market Buy | 三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc. | passive | 927.7K | ¥2,493 | +59.3% | ¥479M ($3.1M) |
| 2025-03-31 | 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 | 253.4K | ¥2,493 | +59.3% | ¥352M ($2.3M) |
| 2025-03-31 | SELL | 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 | 40.8K | ¥2,493 | -59.3% | ¥99M ($636K) |
| 2025-01-21 | SELL | Market Buy | 三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited | strategic | 523.4K | ¥2,475 | -60.4% | ¥7M ($45K) |
| 2025-01-21 | 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 | 528.7K | ¥2,475 | +60.4% | ¥84M ($541K) |
| 2025-01-21 | 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 | 485.2K | ¥2,475 | +60.4% | ¥133M ($857K) |
| 2024-11-20 | BUY | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 860.8K | ¥2,422 | +63.9% | ¥21M ($132K) |
| 2024-11-20 | SELL | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | -14.5K | ¥2,422 | -65.8% | ¥34M ($221K) |
| 2024-11-20 | BUY | unknown | ノムラ セキュリテーズ インターナショナル NOMURA SECURITIES INTERNATIONAL,Inc. | other | 26.0K | ¥2,422 | +63.9% | ¥62M ($397K) |
| 2024-11-20 | SELL | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 482.1K | ¥2,422 | -63.9% | ¥294M ($1.9M) |
| 2024-11-18 | BUY | negotiated | 株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc. | strategic | 510.7K | ¥2,466 | +61.0% | ¥1.3B ($8.1M) |
| 2024-11-18 | BUY | negotiated | 三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc. | passive | 733.2K | ¥2,466 | +61.0% | ¥1.8B ($11.7M) |
| 2024-11-18 | 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 | 113.0K | ¥2,466 | +61.0% | ¥279M ($1.8M) |
| 2024-11-18 | BUY | 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 | 79.7K | ¥2,466 | +61.0% | ¥196M ($1.3M) |
| 2024-08-20 | BUY | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 854.3K | ¥2,417 | +64.3% | ¥2.1B ($13.3M) |
| 2024-08-20 | BUY | unknown | ノムラ セキュリテーズ インターナショナル NOMURA SECURITIES INTERNATIONAL,Inc. | other | 0 | ¥2,417 | +64.3% | - |
| 2024-08-20 | BUY | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | -664 | ¥2,417 | +66.1% | - |
| 2024-08-20 | BUY | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 605.2K | ¥2,417 | +64.3% | ¥1.5B ($9.4M) |
| 2024-07-05 | BUY | unknown | 株式会社みずほ銀行 Mizuho Bank, Ltd. | strategic | 972.7K | ¥2,805 | +41.5% | ¥2.7B ($17.6M) |
| 2024-07-05 | BUY | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 456.6K | ¥2,805 | +41.5% | ¥1.3B ($8.3M) |
| 2024-05-23 | BUY | unknown | 村上貴輝 Takateru Murakami | activist | 1.3M | ¥2,814 | +41.1% | ¥3.6B ($23.1M) |
| 2024-05-23 | SELL | unknown | 株式会社MI2 MI2 Ltd. | activist | 53.5K | ¥2,814 | -41.1% | ¥618M ($4.0M) |
| 2024-02-01 | BUY | unknown | 株式会社MI2 MI2 Ltd. | activist | 273.5K | ¥2,750 | - | - |
| 2024-02-01 | BUY | unknown | 村上貴輝 Takateru Murakami | activist | 1.7M | ¥2,750 | +44.4% | ¥787M ($5.1M) |
| 2024-01-12 | BUY | unknown | 村上貴輝 Takateru Murakami | activist | 1.4M | ¥2,566 | +54.7% | ¥756M ($4.9M) |
| 2024-01-12 | BUY | unknown | 株式会社MI2 MI2 Ltd. | activist | 273.5K | ¥2,566 | - | - |
| 2024-01-05 | BUY | unknown | 株式会社MI2 MI2 Ltd. | activist | 273.5K | ¥2,358 | +68.4% | ¥645M ($4.2M) |
| 2024-01-05 | BUY | unknown | 村上貴輝 Takateru Murakami | activist | 1.1M | ¥2,358 | +68.4% | ¥2.7B ($17.4M) |
| 2023-10-19 | BUY | negotiated | 三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited | strategic | 523.4K | ¥1,781 | +122.9% | ¥932M ($6.0M) |
| 2023-10-19 | 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 | 491.8K | ¥1,781 | +122.9% | ¥876M ($5.7M) |
| 2023-10-19 | BUY | negotiated | 日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd. | other | 428.5K | ¥1,781 | +122.9% | ¥763M ($4.9M) |
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.