--- title: "Pre-market hot trades in US stocks: AXT Company pre-market down 3.18%; AST SpaceMobile pre-market down 3.13%" type: "News" locale: "en" url: "https://longbridge.com/en/news/286920349.md" description: "AXT fell 3.18% in pre-market; AST SpaceMobile fell 3.13% in pre-market; Amesite rose 195.09% in pre-market; InMed Pharmaceuticals rose 160.03% in pre-market; Rubico rose 123.12% in pre-market" datetime: "2026-05-19T13:18:00.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/286920349.md) - [en](https://longbridge.com/en/news/286920349.md) - [zh-HK](https://longbridge.com/zh-HK/news/286920349.md) --- # Pre-market hot trades in US stocks: AXT Company pre-market down 3.18%; AST SpaceMobile pre-market down 3.13% **Pre-market Hot Trades in US Stocks** AXT Company is down 3.18% in pre-market trading. Based on recent key news: 1. On May 19, AXT Company announced it would participate in several investor meetings, including a meeting on May 21 in Los Angeles, a meeting on May 28 in Minneapolis, and a virtual meeting on June 23. These events may affect investors' expectations for the company's future development, leading to stock price fluctuations. 2. On May 19, AXT Company hired the advisory firm Alliance Advisors to assist management in obtaining sufficient votes to reach the quorum for the annual shareholders' meeting. This move demonstrates the company's proactive efforts in governance, which may have a short-term impact on the stock price. 3. On May 17, the demand for optical technology in the market increased, and AI data centers faced network bottlenecks. As one of the main suppliers of optical technology, AXT Company benefited from the increased market demand for optical technology, driving up its stock price. The demand for optical technology has increased, and investments in AI data centers have expanded. AST SpaceMobile is down 3.13% in pre-market trading. Based on recent key news: 1. On May 18, AST SpaceMobile reached a spectrum leasing agreement with AT&T, Verizon, and FirstNet, promoting connectivity from satellites to smartphones. This move allows ASTS to provide satellite connectivity services in the 700 MHz and 800 MHz bands across the continental United States and Hawaii, boosting market confidence and driving up the stock price. 2. On May 18, AST SpaceMobile's technological advancements and future growth catalysts received attention. Despite disappointing first-quarter results, the significant increase in technological momentum indicates a rapid shift in market sentiment towards positivity, resulting in strong stock performance. 3. On May 19, AST SpaceMobile plans to accelerate the integration of satellites into mainstream wireless networks to reduce nationwide coverage blind spots. This move is seen as an important step in promoting global network expansion, further enhancing market confidence in the company's future development. The IPO of the space industry has sparked market discussions, focusing on risks. **Top Gainers in Pre-market US Stocks** Amesite is up 195.09% in pre-market trading. Based on recent key news: 1. On May 19, Amesite secured a new enterprise client involving approximately 2,700 patients, marking its largest deployment to date, which significantly boosted its stock price in pre-market trading. This client will deploy NurseMagic AI documentation to streamline workflows, expected to significantly reduce the administrative burden on nursing staff each week. Source: Zhitong Finance 2. On May 19, Amesite's CEO Ann Marie Sastry purchased 174,216 shares of common stock at a price of $1.44 per share, increasing her direct holdings to 1,049,647 shares. This move is seen as a vote of confidence in the company's future development, further driving up the stock price Source: Zhitong Finance On May 19, Amesite announced revenue growth to $285,678, with net losses narrowing to $2.05 million. Despite a strategic shift towards medical AI solutions and successfully raising $2.6 million in funding, there are still significant doubts about its ability to continue as a going concern. Source: Zhitong Finance The market potential for AI medical solutions is enormous, with significant capital inflows. InMed Pharmaceuticals surged 160% in pre-market trading. Based on recent key news: 1. On May 19, InMed Pharmaceuticals announced a stock-for-stock merger agreement with Mentari Therapeutics to advance migraine prevention therapies. After the merger, InMed shareholders are expected to own approximately 1.51% of the merged company, which is anticipated to have an equity value of about $421.4 million. This news drove InMed's stock price up in pre-market trading. 2. On May 19, the merged company will trade on the Nasdaq Capital Market under the name Mentari Therapeutics and will use a new stock ticker. This move further boosted market confidence in InMed, leading to a significant increase in its stock price. 3. On May 19, InMed Pharmaceuticals announced the merger via PR Newswire, highlighting its advantages in public market infrastructure, attracting investor attention and driving up its stock price. The biotech industry has seen frequent merger activity recently, garnering high market attention. Rubico surged 123.12% in pre-market trading. Based on recent key news: 1. On May 19, oil demand remains high, and despite supply issues, once these disruptions end, there may be an increase in demand for transport vessels to help replenish tight oil supplies. This presents Rubico with opportunities to increase business and revenue. The oil industry is experiencing strong demand, with a focus on supply chain risks ### Related Stocks - [AXTI.US](https://longbridge.com/en/quote/AXTI.US.md) - [ASTS.US](https://longbridge.com/en/quote/ASTS.US.md) - [AMST.US](https://longbridge.com/en/quote/AMST.US.md) - [INM.US](https://longbridge.com/en/quote/INM.US.md) - [RUBI.US](https://longbridge.com/en/quote/RUBI.US.md) ## Related News & Research - [If You Invested $1000 In AXT Stock 5 Years Ago, You Would Have This Much Today](https://longbridge.com/en/news/286283726.md) - [AXT Turned the AI Data Center Boom Into an 8,436% 1-Year Return](https://longbridge.com/en/news/286650839.md) - [What is one of the best growth stocks to buy with $500 today?](https://longbridge.com/en/news/286478811.md) - [AXT adjourns Annual Meeting of Stockholders to 4 June](https://longbridge.com/en/news/286800862.md) - [AXT (AXTI) Is Up 18.7% After AI-Focused Q1 Results Show Narrower Losses And Stronger Mix](https://longbridge.com/en/news/286142025.md)