US stock markets saw mixed performance on Tuesday, with major technology names facing headwinds while investors weighed the future of artificial intelligence regulation. Trading volumes remained elevated across the board as several key players captured market attention.
Micron Technology (NASDAQ: MU) climbed 0.39% to close as the second most actively traded stock, with transaction value reaching $34.948 billion. The memory chipmaker showcased the world's first 512GB DDR5 memory module, a 3DS RDIMM product that leverages through-silicon via technology to stack DRAM dies, maximizing single-package memory capacity. A single 512GB module enables up to 12TB of memory in dual-processor, 24-slot configurations, supporting speeds of 9200MT/s while delivering over 60% energy savings compared to four 128GB modules. Production is slated for the second half of 2027, with AMD and Intel currently validating the module on their next-generation server platforms.
NVIDIA (NASDAQ: NVDA) gained 0.57% with $18.627 billion in trades, ranking fourth. CEO Jensen Huang stated Tuesday that new AI safety regulations are unnecessary, arguing that market forces will naturally compel companies to prioritize safety alongside innovation. Speaking at a Salesforce.com (NYSE: CRM) event, Huang emphasized that the industry doesn't require additional legislation, dismissing the notion that safety and speed are mutually exclusive in AI development. "Both can absolutely be achieved," he said. "You can control the pace of development until you're confident in launching products the market accepts. Market forces will play their part."
Meta Platforms, Inc. (NASDAQ: META) advanced 0.70% on $13.042 billion in volume, securing the fifth spot. The social media giant plans to deploy its new in-house ARKE chip in data centers starting the first half of next year, aiming to reduce costs and energy consumption when running AI models. Originally announced in 2023, the company is currently testing the third generation of its AI chip, codenamed MTIA 450 or Arke. The next iteration, codenamed 500 or Astrid, is expected to complete design within a month and enter data center deployment by late 2027.
Tesla Motors (NASDAQ: TSLA) slipped 0.67% with $10.853 billion in trades, ranking sixth. Elon Musk again hinted at a potential merger between SpaceX and Tesla during the 2026 All-In Summit, noting their deep collaboration across multiple sectors including the joint semiconductor project Terafab. SpaceX has already acquired xAI and completed its public listing this year, expanding its commercial footprint significantly.
SanDisk fell 1.36% to seventh place with $10.552 billion in volume, while SpaceX dropped 3.15% to eighth with $10.503 billion traded. The Starship program will begin orbital missions from its 14th flight, deploying Starlink V3 satellites and other payloads into space.
Apple (NASDAQ: AAPL) declined 0.52% to ninth place with $10.475 billion in trades. On Monday, the company pushed iOS 27 to users, finally bringing the delayed Siri AI to public beta testing—though currently English-only. While the new Siri can understand personal context and execute more complex tasks, it still struggles with accuracy and response speed, and deep third-party app integration remains incomplete.
Amazon.com (NASDAQ: AMZN) slid 2.02% to eleventh place with $9.018 billion in trades. Amazon Web Services reported that some data centers in the Persian Gulf region remain inaccessible due to damage sustained during the US-Iran conflict. The company noted that data stored exclusively in its Bahrain facility and certain UAE network zones remains unreachable.
Microsoft (NASDAQ: MSFT) fell 1.64% to twelfth with $8.864 billion in volume. Advanced Micro Devices (NASDAQ: AMD) rose 2.19% to thirteenth with $8.632 billion traded. Intel (NASDAQ: INTC) edged down 0.05% to fifteenth with $8.326 billion in trades. Chipmaker Altera, backed by private equity firm Silver Lake and Intel, announced Tuesday it has confidentially filed for an IPO with the SEC, beginning its journey back to public markets.
Dell Technologies Inc. (NYSE: DELL) advanced 1.73% to twentieth place with $5.417 billion in volume. CEO Michael Dell warned that computing equipment and PC prices will continue rising amid the AI boom, with the "structural shortage" of hardware chips likely worsening by 2027. "Based on all available information, the structural chip shortage in 2027 will likely be more severe than in 2026," he said. "Yes, costs are rising, and we will pass those costs through to product pricing."
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