The closely contested 50% odds on SpaceX joining the Nasdaq-100 in 2026 stem primarily from Nasdaq’s May 1 fast-entry rule change, which permits sufficiently large new listings to qualify after just 15 trading sessions rather than waiting up to a year. SpaceX’s planned June 12 Nasdaq debut under ticker SPCX, targeting a $1.75 trillion valuation and record $75 billion raise, aligns with the size threshold that would trigger index inclusion by early July, yet traders weigh execution risks including final share float calculations, any post-listing volatility tied to Elon Musk’s ownership, and the precise timing of Nasdaq’s rebalancing decisions. Recent filings confirm aggressive acceleration from confidential April submissions, but the outcome hinges on whether the company clears the fast-track hurdles without delay. Key upcoming catalysts include the June 11 pricing, initial trading metrics, and any official index announcements in the weeks following the IPO.