SpaceX's historic IPO just got a potential upside figure attached to it. If demand is strong enough for underwriters to fully exercise their overallotment option, the total value of shares sold could climb by approximately $11.25 billion — pushing the offering's total size to roughly $85.7 billion, according to analyst and Tesla tracker Sawyer Merritt.
The overallotment option — sometimes called a greenshoe — is a standard IPO mechanism that lets underwriters sell additional shares beyond the original offering size when investor demand exceeds expectations. It's a signal of confidence, not a guarantee: the option only gets exercised if the book is genuinely oversubscribed.
The base offering itself is already staggering. According to SEC filings, SpaceX set its IPO price at $135 per share across 555.56 million shares, targeting $75 billion in proceeds. That alone would make it the largest IPO in history. The company is aiming for a Nasdaq listing under the ticker SPCX as early as June 12, 2026, with Goldman Sachs and Morgan Stanley leading underwriting duties. The implied valuation sits in the $1.75 trillion to $2 trillion range — a figure that dwarfs most publicly traded companies on earth.
The $85.7 billion ceiling, if reached, would represent a landmark moment not just for SpaceX but for the broader private-to-public transition in the aerospace and technology sectors. Whether underwriters pull the trigger on the full overallotment will depend on order book strength in the days leading up to the June 12 target date. Watch the S-1/A filings — SpaceX already submitted an amended registration on June 3, suggesting active fine-tuning ahead of launch. For our broader SpaceX coverage, follow along as the listing date approaches.
Sarah focuses on Tesla Energy, SpaceX missions, and the broader Musk AI portfolio. Former data analyst in clean energy. Based in San Francisco.
Sources verified at publish time. Spotted an inaccuracy? Email editorial@basenor.com.
