SpaceX’s June 2026 Nasdaq IPO at a $1.77 trillion valuation positioned it among the largest U.S. companies by market cap, yet S&P 500 inclusion remains blocked by unchanged eligibility rules requiring positive trailing GAAP earnings and a minimum 12-month public seasoning period. The company posted a $4.94 billion net loss for 2025 and continued operating losses into 2026, with analysts projecting breakeven no earlier than 2027. S&P Dow Jones Indices explicitly declined to waive these standards for mega-cap IPOs, leaving SpaceX ineligible through year-end. Trader consensus at 98.2% against 2026 addition reflects this structural barrier, though a surprise rule revision or accelerated profitability could theoretically reopen the window before December 31.