Investors have chased the upcoming SpaceX IPO with more than four times the available shares, sources say. The firm will offer 555.6 million shares at $135 each, a pricing that would generate roughly $75 billion and lift the company’s valuation to about $1.8 trillion. Order books close at 4 p.m. New York time on Wednesday, after which institutional demand will be locked in.

The offering, slated to price on June 11 and debut on Nasdaq the following day, could become the largest U.S. listing ever, eclipsing Saudi Aramco’s $29.4 billion debut. Lead underwriters include Goldman Sachs, Morgan Stanley, Bank of America, Citigroup and JPMorgan, with 18 additional banks participating. The share ticker will be SPCX on both Nasdaq and Nasdaq Texas.

If the subscription holds, the transaction would add a massive new block of market capital to U.S. exchanges, joining recent AI‑focused IPO filings by OpenAI and Anthropic that together could contribute $3.6 trillion in value. The scale of the deal underscores investor appetite for Musk‑led ventures that blend space, satellite and artificial‑intelligence businesses.