E231: Tether's $500B valuation; OpenAI-Nvidia $100B AI powerhouse deal; Stripe buyback at $106.7B; TikTok US valuation at only $14B!; Fermi's $13B IPO for AI data center energy; 1X robotics' $10B+ valuation; Anthropic for Microsoft AI Copilot; Databricks- | This Week in Pre-IPO Stocks | Podwise