--- title: "Pre-market hot trades in US stocks: Ridgetech up 42.39% pre-market; Rocket One up 14.18% pre-market" type: "News" locale: "en" url: "https://longbridge.com/en/news/288412125.md" description: "Ridgetech pre-market up 42.39%; Rocket One pre-market up 14.18%; Bluejay Diagnostics pre-market up 191.24%; Decent pre-market up 109.97%; VisionSys AI pre-market up 81.73%" datetime: "2026-06-02T11:07:50.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/288412125.md) - [en](https://longbridge.com/en/news/288412125.md) - [zh-HK](https://longbridge.com/zh-HK/news/288412125.md) --- # Pre-market hot trades in US stocks: Ridgetech up 42.39% pre-market; Rocket One up 14.18% pre-market **Pre-market Hot Trades in US Stocks** Ridgetech, up 42.39% in pre-market trading, has no significant news recently. The trading is active with clear capital flow, and considering the sector and industry trends, the stock shows significant volatility, with specific reasons needing further observation. Rocket One is up 14.18% in pre-market trading. Based on recent key news: 1. On June 1, Rocket One appointed Dr. Supriyo Bandyopadhyay as Chief Technical Advisor for AI Nano-Magnetic Technology. This move marks an important step for the company in developing radiation-resistant, ultra-low power AI chip platforms, driving the stock price up. Source: Rocket One Inc. 2. On May 30, Rocket One focused on developing radiation-resistant nano-magnetic AI chip technology for defense and deep space platforms. The progress of this technology has attracted market attention, leading to stock price fluctuations. Source: Benzinga 3. No other significant news recently. The acceleration of technological innovation in the AI chip industry has heightened market attention. **Top Gainers in Pre-market US Stocks** Bluejay Diagnostics is up 191.24% in pre-market trading. 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. Following this announcement, Bluejay Diagnostics' stock price surged. 2. On June 2, the company issued a statement clearly indicating that it would not update any forward-looking statements unless legally required. This statement stabilized investor expectations, further driving the stock price up. 3. On June 2, the partnership between Bluejay Diagnostics and Argonaut Manufacturing Services was officially disclosed, further enhancing market confidence in Bluejay's future development, leading to a significant stock price increase. Recent frequent collaborations in the healthcare industry have boosted market confidence. Decent is up 109.97% in pre-market trading. Based on recent key news: 1. On June 2, Hitek Global Inc. (NASDAQ:HKIT) fell 22.05% in pre-market trading, dropping from $6.58 the previous trading day to $5.13, indicating market concerns about its future performance. 2. On June 2, Grande Group Limited (NASDAQ:GRAN) fell 21.62% in pre-market trading, dropping from $1.06 the previous trading day to $0.83, reflecting investor doubts about its profitability On June 2, ZHONGCHAO Inc. (NASDAQ:ZCMD) pre-market trading fell 19.75%, from the previous trading day's $0.08 to $0.06, indicating market uncertainty about its business prospects. Recent market volatility has been significant, and investors should exercise caution. VisionSys AI pre-market rose 81.73%. Based on recent key news: 1. On June 2, Hitek Global Inc. (NASDAQ:HKIT) pre-market trading fell 22.05%, from the previous trading day's $6.58 to $5.13. The significant drop in the company's stock price may be related to its poor performance in the latest financial report, leading to a lack of investor confidence. 2. On June 2, Grande Group Limited (NASDAQ:GRAN) pre-market trading fell 21.62%, from the previous trading day's $1.06 to $0.83. The decline in the company's stock price may be related to market concerns about its future profitability. 3. On June 2, ZHONGCHAO Inc. (NASDAQ:ZCMD) pre-market trading fell 19.75%, from the previous trading day's $0.08 to $0.06. The decline in the company's stock price may be related to the unclear prospects for its business development. 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