海外科技周报：美债再经考验，恐慌欧洲难解长期顽固-20250526

Investment Rating - Investment rating: None [4] Core Insights - The report highlights significant developments in the U.S. nuclear energy sector, driven by three key executive orders signed by President Trump, which aim to revamp the nuclear energy supply chain, enhance reactor testing mechanisms, and optimize regulatory approval processes. This comprehensive approach is expected to shorten the construction cycle for nuclear power plants and clarify the commercialization path for Small Modular Reactors (SMRs) and fourth-generation reactors [5][17][18]. Summary by Sections 1. Overseas AI - The report notes a market pullback in Hong Kong and U.S. tech stocks during the week of May 19 to May 23, 2025, with the Hang Seng Tech Index closing at 5246.9, down 0.7%, underperforming the Hang Seng Index by 1.8 percentage points. The Philadelphia Semiconductor Index closed at 4702.4, down 4.5%, lagging behind the Nasdaq 100 and S&P 500 indices [8][10]. 2. Key Events in Nuclear Energy - The executive orders focus on three main areas: 1. "Revitalizing the Nuclear Industry Foundation" aims to establish a strategic direction for the production and procurement of HALEU/LEU/HEU, facilitating a complete supply chain from fuel supply to power plant construction [17]. 2. "Reforming the Department of Energy's Reactor Testing" seeks to streamline the approval process for advanced reactors, reducing the time from technology validation to commercial deployment [18]. 3. "Reforming the Nuclear Regulatory Commission" aims to shorten approval timelines to 18 months and set a target to increase nuclear capacity from approximately 100 GW in 2024 to 400 GW by 2050 [18]. 3. Web3 and Cryptocurrency Market - The global cryptocurrency market capitalization rose to $3.46 trillion as of May 23, 2025, up from $3.32 trillion the previous week. The total trading volume for cryptocurrencies reached $170.07 billion, accounting for 4.92% of the total market capitalization [20][24]. - The sentiment in the cryptocurrency market is currently in the "greed" zone, with a Fear and Greed Index reading of 76 [24]. 4. Notable Stock Movements - The report lists the top five gainers in the nuclear energy sector for the week, including NANO NUCLEAR ENERGY (+32%), OKLO (+30%), and NUSCALE POWER (+25%). Conversely, the top five losers included WOLFSPEED (-63%) and AMD (-5.9%) [10][12].