A SpaceX IPO would be a massive capital event. Since Elon Musk leads both companies, a SpaceX IPO could lead to Musk selling Tesla stock for liquidity or asset reallocation, causing a direct and significant impact on TSLA's price (potentially bearish due to selling pressure or bullish due to ecosystem synergies). Additionally, as a mega-unicorn, its listing would have spillover effects on broader tech sentiment (Nasdaq 100).

The prediction market exhibits a significant 'timeline optimism' bias. Despite being at the end of April with no public S-1 filings, the market still assigns nearly a two-thirds probability to a June IPO. Mainstream financial consensus dictates that a mega-cap IPO of SpaceX's scale requires months of preparation, roadshows, and SEC back-and-forth after public filing. The market is aggressively ignoring these operational realities, underpricing the high likelihood of a delay into the second half of the year (August or later).