SpaceX submitted its S-1 registration statement to the SEC on Thursday, initiating what sources close to the filing expect to be a $40-60 billion raise at a $200-250 billion post-money valuation. That would eclipse Saudi Aramco's $29.4 billion 2019 debut and Alibaba's $25 billion 2014 listing as the largest IPO on record. The company has operated privately since its 2002 founding, funded through 112 venture and growth rounds totaling roughly $9.7 billion in disclosed capital. Starlink subscriber count—now north of 2.3 million terminals globally—is expected to anchor the equity story alongside the Falcon Heavy and Starship reusable-launch economics.

The filing arrives as SpaceX's last private tender in February priced shares at $112, implying a $210 billion valuation. That secondary market cleared $1.8 billion in seller liquidity, mostly employee stock, and set a reference point underwriters will use to calibrate the IPO range. The S-1 landed two weeks after NASA confirmed the Artemis III lunar lander contract remains on schedule for late 2026, locking in $2.9 billion in federal milestone payments. Starlink's EBITDA run rate—estimated at $3.1 billion annually by analyst consensus—gives the equity a rare dual narrative: high-margin recurring revenue from satellite internet subscriptions and lumpy but growing launch services revenue, which hit $4.2 billion in 2023. No aerospace pure-play has combined both at scale.

The move forces a repricing across private-market comparables. Rocket Lab, public since 2021 via SPAC, trades at $6.8 billion market cap with $400 million in trailing revenue—a 17x sales multiple. If SpaceX prints at $200 billion on consensus revenue estimates near $9 billion, that's a 22x multiple, justified by margin structure and contract backlog but still a premium that will ripple into every venture-stage space infrastructure deal. Family offices and endowments holding SpaceX shares from the 2020-2022 vintage rounds—Series H and I, priced between $56 and $77—are looking at a 1.5-2.0x markup if the IPO prices mid-range. Crossover funds that bought the February tender are flat to slightly up, a sobering reminder that late-stage entry in marquee names is no longer the edge it was in 2021. More immediately, the S-1 will reveal Starlink's true unit economics—ARPU, churn, customer acquisition cost—numbers the company has guarded for three years. If ARPU is below $100 per month or churn exceeds 4% monthly, valuation assumptions compress fast.

Allocators should track three developments over the next 60-90 days. First, the roadshow calendar: if SpaceX prices before July, it signals confidence in near-term Starship milestones and a desire to front-run any macro volatility tied to the August debt-ceiling window. Second, the greenshoe structure—whether underwriters take a 15% overallotment option or something smaller, which telegraphs expected volatility and insider selling appetite. Third, how much of the float goes to retail versus institutional tranches; Musk has hinted at direct-listing mechanics in the past, and any deviation from traditional bookbuilding will move secondary-market pricing for other late-stage private aerospace names within hours.

The filing does not yet include a ticker symbol, and no lead underwriters are named in the preliminary version, which means the full S-1 with financial exhibits is still 4-6 weeks out. That gap is the window.