--- title: "Pre-market hot trades in US stocks: BIO-key International up 14.89% pre-market; Coherent Corp. up 4.78% pre-market" type: "News" locale: "en" url: "https://longbridge.com/en/news/294803365.md" description: "BIO-key International pre-market up 14.89%; Coherent Corp. pre-market up 4.78%; Rain Enhancement Tech Holdco pre-market up 97.47%; RISING DRAGON ACQUISITION CORP COM USD0.0001 15/11/2028 (SUBS/RT) pre-market up 88.01%; eLong Power pre-market up 56.05%" datetime: "2026-08-04T10:08:02.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/294803365.md) - [en](https://longbridge.com/en/news/294803365.md) - [zh-HK](https://longbridge.com/zh-HK/news/294803365.md) generator: "portal-rs" --- # Pre-market hot trades in US stocks: BIO-key International up 14.89% pre-market; Coherent Corp. up 4.78% pre-market **Popular Pre-Market Trades in U.S. Stocks** BIO-key International, pre-market up 14.89%, with no significant news recently. Trading is active, and capital flows are evident. Considering sector and industry trends, the stock shows significant volatility, and specific reasons need further observation. Coherent Corp. pre-market up 4.78%. Based on recent key news: 1. On August 4, Corning's stock price rebound drove up optical communication stocks. Corning analysts upgraded the investment rating from "Hold" to "Buy," lowering the target price to $175. Corning's stock rebounded 6.07%, boosting Coherent and other optical communication stocks. Source: Barron’s 2. On August 4, analysts forecasted Coherent's future investment returns. Analysts predict Coherent's return on investment will be 6.25% by 2027, but there are bull-bear divergences in the AI optics field, affecting stock price volatility. Source: 24/7 Wall St. 3. On August 1, AI data center laser supply chain bottlenecks. Lumentum's CEO warned that the indium phosphide laser supply chain faces bottlenecks, impacting AI infrastructure expansion, benefiting companies like Coherent. Source: Golden Finance. The optical communication industry has performed strongly recently, with continued enthusiasm for AI investments. **Top Gainers in U.S. Pre-Market Stocks** Rain Enhancement Tech Holdco pre-market up 97.47%. Based on recent key news: 1. On August 4, Rain Enhancement Tech Holdco's stock price surged 97.47% in pre-market trading, driven by increased market expectations for its technological innovations. 2. On August 4, Clearpoint Neuro Inc. reported second-quarter earnings that missed expectations and lowered its full-year sales guidance, causing its stock price to drop 14.5%. 3. On August 4, Powell Industries Inc. had poor quarterly earnings, with its stock price falling 13.4%. The U.S. stock market has seen increased volatility recently, and risks need to be monitored. RISING DRAGON ACQUISITION CORP COM USD0.0001 15/11/2028 (SUBS/RT), pre-market up 88.01%, with no significant news recently. Trading is active, and capital flows are evident. Considering sector and industry trends, the stock shows significant volatility, and specific reasons need further observation. eLong Power pre-market up 56.05%. Based on recent key news: 1. On August 3, eLong Power announced a public offering at a price of $0.12 per unit, expecting total proceeds of approximately $1.38 million. This move attracted market attention, significantly boosting the stock price. Source: PR Newswire 2. On August 4th, eLong Power further confirmed the details of the offering, including that each unit consists of one share of common stock and one warrant, which is immediately exercisable at a price of $0.12. This news boosted investor confidence, and the stock price continued to rise. Source: Zhitong Finance 3. On August 3rd, eLong Power conducted a 1-for-80 reverse stock split to maintain its listing status, and the previous stock price adjustment provided a foundation for this offering. Source: Zhitong Finance The lithium battery industry has recently been active, with significant capital inflows ### Related Stocks - [BKYI.US](https://longbridge.com/en/quote/BKYI.US.md) - [COHR.US](https://longbridge.com/en/quote/COHR.US.md) - [RAIN.US](https://longbridge.com/en/quote/RAIN.US.md) - [RDACR.US](https://longbridge.com/en/quote/RDACR.US.md) - [ELPW.US](https://longbridge.com/en/quote/ELPW.US.md) ## Related News & Research - [Coherent CFO Sherri R. 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