SpaceX IPO Slumps 21% While Top IPOs Lag S&P 500 by 127 Points
SPCX•SpaceX’s 2026 public debut, the largest in U.S. history, has slid 21% from its peak. Historical data on the ten largest U.S. IPOs shows a median 127 percentage-point shortfall versus the S&P 500, underscoring the ETF’s more stable returns.
1. SpaceX IPO Slide
Since its spring 2026 debut, SpaceX shares have fallen 21% from their all-time high, marking one of the steepest declines among recent mega-IPOs.
2. Historical IPO Underperformance
An analysis of the ten largest U.S. IPOs reveals that eight have underperformed the S&P 500 by a median 127 percentage points over comparable time frames.
3. S&P 500 ETF Comparison
The S&P 500 ETF has delivered consistent gains with lower volatility, contrasting sharply with the wild price swings seen in blockbuster public offerings.
4. Investor Implications
For risk-averse portfolios, these results suggest broad-market ETFs may offer a steadier return path than betting on headline-grabbing IPOs.
