--- title: "Pre-market hot trades in US stocks: Semtech up 8.30% pre-market; Oriental Culture down 7.76% pre-market" type: "News" locale: "en" url: "https://longbridge.com/en/news/288416672.md" description: "Semtech pre-market up 8.30%; Oriental Culture pre-market down 7.76%; Bluejay Diagnostics pre-market up 207.37%; Picard Medical pre-market up 116.15%; VisionSys AI pre-market up 79.01%" datetime: "2026-06-02T11:37:51.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/288416672.md) - [en](https://longbridge.com/en/news/288416672.md) - [zh-HK](https://longbridge.com/zh-HK/news/288416672.md) --- # Pre-market hot trades in US stocks: Semtech up 8.30% pre-market; Oriental Culture down 7.76% pre-market **Pre-market Hot Trades in US Stocks** Semtech pre-market rose 8.30%. Based on recent key news: 1. On May 31, HieFo plans to significantly increase the production capacity of gain chips, with market demand far exceeding supply, which may drive up the stock prices of related supply chain companies. Source: Zhitong Finance 2. On May 28, Semtech director Jane Li sold 5,285 shares of common stock, which may raise concerns in the market about internal confidence in the company. Source: SEC announcement 3. On May 28, Semtech director Gregory Michael Fischer sold 1,000 shares of common stock, further exacerbating market doubts about internal confidence in the company. Source: SEC announcement. The semiconductor industry is experiencing strong demand, leading to increased market volatility. Oriental Culture pre-market fell 7.76%. Based on recent key news: 1. On May 29, Oriental Culture Holdings Limited disclosed in an SEC filing that it may issue and sell up to $260 million in securities. This news raised market concerns about equity dilution, causing the stock price to drop 7.76% in pre-market trading. The market remains vigilant about the risk of equity dilution. **Top Gainers in Pre-market US Stocks** Bluejay Diagnostics pre-market rose 207.37%. Based on recent key news: 1. On June 2, Bluejay Diagnostics announced a strategic partnership with Argonaut Manufacturing Services. This collaboration aims to enhance Bluejay's Symphony™ platform, which focuses on near-patient testing in critical care. This news significantly boosted the company's stock price. Source: Reuters 2. On June 2, Bluejay Diagnostics issued a statement clarifying that the company does not undertake the obligation to update forward-looking statements. Nevertheless, the market remains optimistic about the company's future development, further driving up the stock price. Source: Company website 3. On June 2, the collaboration between Bluejay Diagnostics and Argonaut Manufacturing Services was officially disclosed, further enhancing market confidence in the company's technology and market expansion, leading to a significant rise in stock price. Source: GlobeNewswire. The market holds an optimistic view on medical technology innovation. Picard Medical pre-market rose 116.15%. Based on recent key news: 1. On June 2, Picard Medical announced that CFO Bernard Skaggs was terminated on June 1, and Georgina Smith was appointed as Chief Accounting Officer. This personnel change may raise market concerns about the stability of the company's management, leading to significant stock price fluctuations. Source: SEC filing On June 2nd, Picard Medical announced through GlobeNewswire regarding the company's recent developments. This announcement may have enhanced market confidence in the company's future growth, driving the stock price up. Source: GlobeNewswire The market is sensitive to changes in management, so attention is needed. VisionSys AI pre-market rose 79.01%. Based on recent key news: 1. On June 2nd, VisionSys AI announced a strategic cooperation agreement with a large technology company, significantly boosting its stock price in pre-market trading. This cooperation is expected to significantly enhance the company's market share in the artificial intelligence field, leading to investor optimism and a stock price surge of 79.01%. 2. On June 1st, market rumors suggested that VisionSys AI is about to launch a revolutionary new product, sparking investor enthusiasm. Although the company has not officially confirmed this, market expectations for the product have driven positive stock performance. 3. On May 31st, analysts upgraded their rating for VisionSys AI, believing that its future growth potential is enormous. Analysts pointed out that the company's efforts in technological innovation and market expansion will bring long-term benefits, attracting more investor attention. 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