AI Stocks Today (Dec. 18, 2025): Micron Ignites the AI Chip Rally as OpenAI Funding Talk and Data-Center Financing Fears Keep Wall Street on Edge
Updated: 1:59 p.m. ET, Thursday, December 18, 2025 AI stocks are rebounding sharply midday Thursday after a bruising bout of “AI trade” volatility earlier this week. The catalyst is familiar: hard evidence of demand. Micron’s blowout outlook and comments around high-bandwidth memory (HBM) have steadied sentiment across semiconductors and mega-cap tech—just as markets digest softer U.S. inflation data, renewed debate over debt-funded data-center expansion, and a fresh jolt from private-market headlines around OpenAI’s next fundraising ambitions. Reuters+2Reuters+2 Below is a comprehensive, publication-ready roundup of the key AI-stock news, forecasts, and market-moving analyses circulating on December 18, 2025, along with what