StockDriftsStockDriftsBrainPad Inc. (3655) has 59 disclosed large-shareholding filings and 47 disclosed disposals on record, filed by 17 distinct investors. Together those filings cover ¥119.8B ($773.2M) in reported transaction value. The earliest filing StockDrifts holds for BrainPad Inc. is dated 2021-04-07; the most recent is 2026-01-09. Across these filings the average return since disclosure is +82.33%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-01-09 | BUY | unknown | 野村證券株式会社 | other | 102.8K | ¥2,690 | +0.1% | ¥204M ($1.3M) |
| 2026-01-09 | SELL | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | 27.6K | ¥2,690 | -0.1% | ¥3.7B ($24.1M) |
| 2026-01-09 | SELL | unknown | 野村アセットマネジメント株式会社 | other | 81.5K | ¥2,690 | -0.1% | ¥744M ($4.8M) |
| 2026-01-06 | SELL | unknown | JPモルガン証券株式会社 | other | 1.5K | ¥2,690 | -0.1% | ¥3.5B ($22.6M) |
| 2026-01-06 | BUY | unknown | ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc | other | 67.8K | ¥2,690 | +0.1% | ¥84M ($542K) |
| 2025-12-22 | SELL | unknown | みずほ証券 株式会社 | other | 20.9K | ¥2,740 | +1.7% | ¥2.3B ($15.1M) |
| 2025-12-22 | SELL | unknown | アセットマネジメントOne株式会社 | other | 263.9K | ¥2,740 | +1.7% | ¥6M ($39K) |
| 2025-12-22 | SELL | unknown | 野村證券株式会社 | other | 27.1K | ¥2,740 | +1.7% | ¥6M ($39K) |
| 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 | 1.4M | ¥2,740 | +1.7% | ¥776M ($5.0M) |
| 2025-12-22 | BUY | unknown | 野村アセットマネジメント株式会社 | other | 358.5K | ¥2,740 | -1.7% | ¥12M ($79K) |
| 2025-12-19 | BUY | Market Buy | 佐藤 清之輔 Seinosuke Sato | activist | 18.1M | ¥2,844 | -5.3% | ¥46.5B ($300.3M) |
| 2025-12-19 | BUY | acquisition | 富士通株式会社 | activist | 18.0M | ¥2,844 | -5.3% | ¥46.5B ($300.1M) |
| 2025-12-19 | SELL | Market Buy | 高橋 隆史 | activist | 12.2K | ¥2,844 | +5.3% | ¥729M ($4.7M) |
| 2025-12-19 | SELL | Market Buy | 株式会社ディシプリン | other | 0 | ¥2,844 | +5.3% | ¥6.7B ($43.1M) |
| 2025-12-19 | BUY | acquisition | 高橋 隆史 | unknown | 12.2K | ¥2,844 | -5.3% | ¥729M ($4.7M) |
| 2025-12-18 | BUY | Market Buy | JPモルガン証券株式会社 | other | 1.3M | ¥2,688 | +0.2% | ¥222M ($1.4M) |
| 2025-12-18 | SELL | Market Buy | ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc | other | 35.3K | ¥2,688 | -0.2% | ¥180M ($1.2M) |
| 2025-12-11 | BUY | negotiated | 高橋 隆史 | activist | 268.2K | ¥2,701 | - | - |
| 2025-12-11 | BUY | negotiated | 株式会社ディシプリン | activist | 2.4M | ¥2,701 | - | - |
| 2025-12-08 | BUY | negotiated | 佐藤 清之輔 Seinosuke Sato | activist | 1.7M | ¥2,701 | - | - |
| 2025-12-08 | BUY | negotiated | 高橋 隆史 | activist | 268.2K | ¥2,701 | - | - |
| 2025-12-08 | BUY | negotiated | 株式会社ディシプリン | activist | 2.4M | ¥2,701 | - | - |
| 2025-12-05 | BUY | unknown | アセットマネジメントOne株式会社 | other | 265.9K | ¥2,700 | -0.3% | ¥718M ($4.6M) |
| 2025-12-05 | BUY | negotiated | 佐藤 清之輔 Seinosuke Sato | activist | 1.7M | ¥2,700 | - | - |
| 2025-12-05 | BUY | unknown | みずほ証券 株式会社 | other | 875.7K | ¥2,700 | -0.3% | ¥2.4B ($15.3M) |
| 2025-12-03 | SELL | Market Buy | 野村アセットマネジメント株式会社 | other | 355.6K | ¥2,700 | +0.3% | ¥6M ($39K) |
| 2025-12-03 | BUY | unknown | ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc | other | 101.5K | ¥2,700 | - | - |
| 2025-12-03 | SELL | unknown | JPモルガン証券株式会社 | other | 1.2M | ¥2,700 | +0.3% | ¥18M ($117K) |
| 2025-12-03 | SELL | Market Buy | 野村證券株式会社 | other | 28.8K | ¥2,700 | +0.3% | ¥126M ($816K) |
| 2025-12-03 | 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 | 1.7M | ¥2,700 | -0.3% | ¥1.8B ($11.8M) |
| 2025-11-26 | BUY | negotiated | 佐藤 清之輔 Seinosuke Sato | activist | 1.7M | ¥2,699 | - | - |
| 2025-11-21 | BUY | negotiated | 佐藤 清之輔 Seinosuke Sato | activist | 1.7M | ¥2,699 | - | - |
| 2025-11-21 | SELL | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 315.4K | ¥2,699 | +0.2% | ¥3.7B ($23.7M) |
| 2025-11-21 | BUY | negotiated | 佐藤 清之輔 Seinosuke Sato | activist | 1.7M | ¥2,699 | - | - |
| 2025-11-21 | BUY | unknown | みずほ証券 株式会社 Mizuho Securities Co., Ltd. | other | 750.6K | ¥2,699 | -0.2% | ¥1.9B ($12.3M) |
| 2025-11-20 | BUY | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 357.5K | ¥2,699 | -0.2% | ¥965M ($6.2M) |
| 2025-11-20 | BUY | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | 1.0M | ¥2,699 | -0.2% | ¥2.8B ($17.8M) |
| 2025-11-20 | BUY | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 76.4K | ¥2,699 | -0.2% | ¥206M ($1.3M) |
| 2025-11-19 | BUY | unknown | ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc | other | 103.2K | ¥2,699 | -0.2% | ¥279M ($1.8M) |
| 2025-11-19 | BUY | unknown | JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd. | other | 1.2M | ¥2,699 | -0.2% | ¥3.3B ($21.5M) |
| 2025-11-06 | BUY | Market Buy | 高橋 隆史 Takafumi Takahashi | activist | 268.2K | ¥2,695 | -0.1% | ¥6M ($39K) |
| 2025-11-06 | BUY | Market Buy | 佐藤 清之輔 Seinosuke Sato | activist | 1.7M | ¥2,695 | -0.1% | ¥12M ($78K) |
| 2025-11-06 | BUY | Market Buy | 佐藤 清之輔 Seinosuke Sato | activist | 1.7M | ¥2,695 | -0.1% | ¥6M ($39K) |
| 2025-11-06 | BUY | Market Buy | 株式会社ディシプリン Discipline Co., Ltd. | activist | 2.4M | ¥2,695 | - | - |
| 2025-09-22 | SELL | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 1.7M | ¥1,414 | -90.5% | ¥382M ($2.5M) |
| 2025-09-22 | SELL | unknown | みずほ証券 株式会社 Mizuho Securities Co., Ltd. | other | 41.6K | ¥1,414 | -90.5% | ¥69M ($448K) |
| 2025-09-22 | SELL | 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 | 12.0K | ¥1,414 | -90.5% | ¥50M ($326K) |
| 2025-08-22 | BUY | Market Buy | 佐藤 清之輔 Seinosuke Sato | activist | 1.7M | ¥1,266 | +112.7% | ¥6M ($36K) |
| 2025-08-22 | BUY | negotiated | 佐藤 清之輔 Seinosuke Sato | activist | 1.7M | ¥1,266 | - | - |
| 2025-08-21 | SELL | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 1.9M | ¥1,247 | -116.0% | ¥153M ($987K) |
Showing the 50 most recent of 134 filings.
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.