StockDriftsStockDriftsMimasu Semiconductor Industry Co., Ltd. (8155) has 20 disclosed large-shareholding filings and 14 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥81.6B ($526.3M) in reported transaction value. The earliest filing StockDrifts holds for Mimasu Semiconductor Industry Co., Ltd. is dated 2021-11-04; the most recent is 2024-08-22. Across these filings the average return since disclosure is +19.22%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2024-08-22 | BUY | unknown | みずほ証券 株式会社 Mizuho Securities Co., Ltd. | other | 260.8K | ¥3,685 | +0.1% | ¥897M ($5.8M) |
| 2024-08-22 | BUY | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 78.5K | ¥3,685 | +0.1% | ¥273M ($1.8M) |
| 2024-08-22 | SELL | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 6.0K | ¥3,685 | -0.1% | ¥41M ($268K) |
| 2024-08-22 | SELL | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | 130.9K | ¥3,685 | -0.1% | ¥1.7B ($11.0M) |
| 2024-08-22 | SELL | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 562.0K | ¥3,685 | -0.1% | ¥105M ($675K) |
| 2024-08-09 | BUY | acquisition | 信越化学工業株式会社 Shin-Etsu Chemical Co., Ltd. | activist | 28.4M | ¥3,675 | +0.4% | ¥53.9B ($347.4M) |
| 2024-08-09 | SELL | acquisition | 信越半導体株式会社 Shin-Etsu Semiconductor Co., Ltd. | unknown | 0 | ¥3,675 | -0.4% | ¥1.3B ($8.5M) |
| 2024-08-07 | 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 | 592.9K | ¥3,685 | -0.1% | ¥392M ($2.5M) |
| 2024-08-07 | SELL | Market Buy | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 589.9K | ¥3,685 | -0.1% | ¥13M ($84K) |
| 2024-08-07 | BUY | Market Buy | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 1.8M | ¥3,685 | +0.1% | ¥13M ($84K) |
| 2024-08-07 | BUY | unknown | みずほ証券 株式会社 Mizuho Securities Co., Ltd. | other | 1.6M | ¥3,685 | +0.1% | ¥5.8B ($37.4M) |
| 2024-08-07 | BUY | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 388.7K | ¥3,685 | +0.1% | ¥1.4B ($9.2M) |
| 2024-08-06 | SELL | unknown | 中澤 正幸 Nakazawa Masayuki | unknown | 0 | ¥3,680 | -0.3% | ¥7.2B ($46.8M) |
| 2024-07-22 | BUY | Market Buy | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 1.8M | ¥3,700 | -0.3% | ¥1.6B ($10.3M) |
| 2024-07-22 | 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 | 699.1K | ¥3,700 | -0.3% | ¥2.2B ($14.0M) |
| 2024-07-22 | SELL | Market Buy | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 594.3K | ¥3,700 | +0.3% | ¥79M ($508K) |
| 2024-06-21 | BUY | Market Buy | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 1.4M | ¥3,690 | +0.0% | ¥2.2B ($14.4M) |
| 2024-06-21 | 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 | 114.2K | ¥3,690 | +0.0% | ¥1.6B ($10.2M) |
| 2024-06-21 | SELL | Market Buy | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 613.6K | ¥3,690 | +0.0% | ¥26M ($169K) |
| 2024-05-21 | BUY | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 799.8K | ¥3,710 | -0.5% | ¥3.0B ($19.1M) |
| 2024-05-21 | BUY | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | 541.6K | ¥3,710 | -0.5% | ¥2.0B ($13.0M) |
| 2024-05-21 | BUY | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 621.7K | ¥3,710 | -0.5% | ¥2.3B ($14.9M) |
| 2024-03-07 | SELL | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 1.5M | ¥3,195 | -15.5% | ¥1.2B ($7.8M) |
| 2023-11-21 | BUY | Market Buy | シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited | passive | 1.5M | ¥2,726 | +35.4% | ¥4.1B ($26.5M) |
| 2023-11-21 | SELL | Market Buy | シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited | passive | 40.8K | ¥2,726 | -35.4% | ¥165M ($1.1M) |
| 2023-04-20 | BUY | Market Buy | シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited | passive | 1.8M | ¥2,696 | +36.9% | ¥3.2B ($20.4M) |
| 2023-04-20 | SELL | Market Buy | シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited | passive | 98.6K | ¥2,696 | -36.9% | ¥3.7B ($24.1M) |
| 2022-12-22 | BUY | Market Buy | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 1.9M | ¥2,427 | +52.0% | ¥60M ($389K) |
| 2022-12-22 | BUY | Market Buy | みずほ証券 株式会社 Mizuho Securities Co., Ltd. | other | 10.3K | ¥2,427 | +52.0% | ¥2.4B ($15.7M) |
| 2022-12-22 | BUY | Market Buy | 米国みずほ証券 Mizuho Securities USA LLC | unknown | 0 | ¥2,427 | - | - |
| 2022-12-21 | SELL | Market Buy | シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited | passive | 649.1K | ¥2,399 | -53.8% | ¥119M ($769K) |
| 2022-12-21 | BUY | Market Buy | シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited | passive | 1.5M | ¥2,399 | +53.8% | ¥903M ($5.8M) |
| 2022-12-07 | BUY | unknown | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 1.8M | ¥2,567 | +43.8% | ¥4.7B ($30.1M) |
| 2022-12-07 | BUY | unknown | みずほ証券 株式会社 Mizuho Securities Co., Ltd. | other | 63.7K | ¥2,567 | - | ¥164M ($1.1M) |
| 2022-12-07 | BUY | unknown | 米国みずほ証券 Mizuho Securities USA LLC | other | 0 | ¥2,567 | - | - |
| 2022-04-21 | BUY | Market Buy | シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited | passive | 700.0K | ¥2,368 | +55.8% | ¥1.7B ($10.7M) |
| 2022-04-21 | BUY | Market Buy | シュローダー・インベストメント・マネージメント・リミテッド Schroder Investment Management Limited | passive | 1.1M | ¥2,368 | +55.8% | ¥2.6B ($17.0M) |
| 2021-11-04 | BUY | negotiated | 信越化学工業株式会社 Shin-Etsu Chemical Co., Ltd. | strategic | 13.7M | ¥2,487 | - | - |
| 2021-11-04 | BUY | negotiated | 信越半導体株式会社 Shin-Etsu Semiconductor Co., Ltd. | strategic | 359.4K | ¥2,487 | - | - |
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.