SpaceX's market debut sparks debate on how stock indexes should include mega-cap newcomers. Nasdaq added the company, while S&P 500 held back, highlighting differing approaches to growth versus conservatism. This divergence could impact investor returns as more AI giants prepare to list, raising questions about market representation and risk management.

Nasdaq changed its rules to allow some huge companies to join its Nasdaq 100 index after just 15 trading days.

NEW YORK, June 15 : The SpaceX IPO went off with a bang. Now investors turn their attention to a jam-packed calendar ahead for Elon Musk's rocket, internet and AI firm that may…

SpaceX's market debut sparks debate on how stock indexes should include mega-cap newcomers. Nasdaq added the company, while S&P 500 held back, highlighting differing approaches to…

Will speculators approach SpaceX with the same vigor they've had for the major AI players of the past year?

Options, leveraged ETFs and index arbitrage are likely boosting the stock ahead of its inclusion in some benchmark stock indexes.

SpaceX could enter millions of investor portfolios quickly after its Nasdaq debut opened fast-entry paths into major indexes. Funds tracking those indexes