Space Stocks Fall Overnight After S&P Rejects SpaceX Fast-Track S&P 500 Rules

According to S&P Global, space stocks declined overnight on June 5 after the index provider rejected proposals to accelerate newly listed megacaps' entry into the S&P 500. AST SpaceMobile (ASTS) fell 2%, Rocket Lab USA (RKLB) and Redwire (RDW) each declined 3%, and Sidus Space (SIDU) shed 1%. S&P Dow Jones Indices maintained existing financial viability, seasoning, and investable weight-factor requirements unchanged, stating that exceptions should not be granted solely based on market capitalization.

SpaceX faces headwinds under unchanged rules, having posted a $4.94 billion net loss in 2025. Per its IPO prospectus, the company plans to price 555.6 million shares at $135 each on June 11, raising $75 billion and valuing the company at $1.77 trillion on a fully diluted basis.