In February 2026, SpaceX bought Musk's artificial intelligence startup xAI for $250 billion, the largest acquisition in corporate history. The deal looked very different three months later. In March, Musk stated publicly that xAI 'was not built right first time around' and was being rebuilt from scratch, a disclosure that came weeks after Tesla had committed $2 billion to the company and after the merger had already closed. By May 7, 2026, Musk dissolved xAI as an independent company, folding its products (including the Grok chatbot) into SpaceX under a new sub-brand called SpaceXAI. Of the 12 co-founders who started xAI with Musk in 2023, only two remain.
SpaceX's IPO is pressing ahead regardless. The company filed its draft prospectus with the U.S. Securities and Exchange Commission in April 2026 and is targeting a roadshow starting June 8, with trading expected on Nasdaq in late June or early July. The fundraising target has grown to $75 billion at a $1.75 trillion valuation, up from the $50 billion projected when the merger was first announced. On May 6, SpaceX signed a deal for Anthropic (maker of the Claude AI) to rent all 220,000-plus Nvidia GPUs in xAI's Memphis Colossus 1 supercomputer, turning infrastructure that xAI had been burning cash to run into a revenue source. SpaceX filed plans that same week for a $55 billion chip factory in Texas called Terafab, a joint venture with Tesla that could grow to $119 billion in total cost.
Why it matters
A successful IPO at $1.75 trillion would hand public investors a stake in the most valuable company ever listed on a stock exchange.
SpaceX is targeting a $1.75 trillion valuation at its June 2026 IPO, up from the $1.25 trillion combined value when the xAI acquisition closed in February
$250B
Acquisition Price
The largest single acquisition ever, exceeding Vodafone-Mannesmann's $203 billion deal in 2000
$75B
Target IPO Raise
If successful at the targeted terms, SpaceX's offering would be the largest public stock sale in history, more than double Saudi Aramco's $29 billion record
$55B–$119B
Terafab Investment
SpaceX filed plans in May 2026 for a chip factory in Texas with a $55 billion initial commitment that could grow to $119 billion across all phases, built alongside Tesla
$1B/month
xAI Cash Burn
xAI's infrastructure spending as it competes with OpenAI and Anthropic
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Mark Twain
(1835-1910) ·Gilded Age · wit
Fictional AI pastiche — not real quote.
"I observe Mr. Musk has discovered the most elegant solution to raising capital: selling one pocket to the other, then inviting the public to buy shares in the trousers. It is a comfort to know that in our modern age of electric wonder, a man may still achieve immortality through the ancient and respectable art of spectacular bookkeeping."
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Andrew Mellon
(1855-1937) ·Progressive Era · finance
Fictional AI pastiche — not real quote.
"Consolidation of capital under singular vision has its merits, though I observe Mr. Musk acquires his own enterprise at a valuation that would make even the most creative financier of my era blush. One wonders whether orbital data centers represent productive investment or merely the costliest method yet devised to cool machinery—the vacuum of space being rather expensive real estate compared to a Pennsylvania riverside."
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Musk announces xAI will be dissolved as a standalone company and its products (including Grok) will operate under a new sub-brand called SpaceXAI within SpaceX.
SpaceX Files $55 Billion Terafab Chip Plant Plans in Texas
Corporate
SpaceX files plans for a chip manufacturing facility in Texas called Terafab, a joint venture with Tesla targeting one terawatt of annual computing output. Total investment could reach $119 billion across all phases, with pilot production targeted for late 2026.
Anthropic Signs Deal to Rent Colossus 1 Supercomputer
Corporate
Anthropic agrees to use all compute capacity at SpaceX's Colossus 1 facility in Memphis (more than 220,000 Nvidia GPUs, over 300 megawatts) to run its Claude AI models. The deal also has the two companies exploring orbital data center development.
Musk Admits xAI 'Not Built Right,' Pledges Rebuild
Corporate
Musk posts on X that xAI 'was not built right first time around, so is being rebuilt from the foundations up'—weeks after Tesla committed $2 billion to the company. Of the 12 original co-founders, only two remain.
xAI Reorganization Announced After Co-Founder Departures
Corporate
Musk announces an xAI restructuring after at least 11 senior engineers, including multiple co-founders, leave the company in the weeks following the SpaceX merger close.
FCC Accepts Million-Satellite Filing, Sets Public Comment Period
Regulatory
FCC formally accepts SpaceX's application for up to one million orbital data center satellites and opens public comment period. FCC Chairman Brendan Carr publicly shares filing on X, signaling regulatory support.
Deal Structure Revealed
Corporate
Documents show merger structured as share exchange: one xAI share at $75.46 converts to 0.1433 SpaceX shares at $526.59.
Musk Details Orbital Data Center Economics on Podcast
Corporate
Elon Musk appears on Stripe co-founder Patrick Collison's 'Cheeky Pint' podcast with Dwarkesh Patel, arguing solar panels produce 5x more power in space than Earth, marking 2028 as tipping point year for orbital AI economics. Predicts within 5 years SpaceX will launch more AI annually than exists cumulatively on Earth.
SpaceX Acquires xAI in Largest Merger Ever
Acquisition
SpaceX announces acquisition of xAI for $250 billion, creating combined company valued at $1.25 trillion—the largest merger in corporate history.
SpaceX Files for Million-Satellite Constellation
Regulatory
SpaceX submits FCC application for up to one million orbital data center satellites at altitudes between 500 and 2,000 kilometers.
Merger Talks Reported
Corporate
Reuters reports SpaceX, Tesla, and xAI are in talks to merge ahead of potential IPO.
SpaceX Valued at $800 Billion
Valuation
SpaceX conducts secondary share sale at $800 billion valuation, more than doubling its value from $350 billion a year earlier.
xAI Completes $20 Billion Series E
Funding
xAI raises $20 billion at approximately $230 billion valuation, with Nvidia and Cisco among strategic investors.
xAI Acquires X (Twitter)
Acquisition
xAI acquires X in an all-stock deal valuing the social media platform at $33 billion (enterprise value $45 billion minus $12 billion debt).
xAI Series C Raises $6 Billion
Funding
xAI raises another $6 billion at $50 billion valuation from Fidelity, BlackRock, and Sequoia Capital.
Colossus Supercomputer Begins Operation
Infrastructure
xAI's Colossus data center in Memphis begins operation with 100,000 Nvidia GPUs, built in just 122 days.
xAI Raises $6 Billion Series B
Funding
xAI closes $6 billion funding round at $24 billion valuation, establishing itself as a major AI competitor.
Musk Founds xAI
Company Formation
Elon Musk launches xAI as an artificial intelligence company to compete with OpenAI, recruiting researchers from DeepMind and Google.
SpaceX Founded
Company Formation
Elon Musk founds Space Exploration Technologies Corp. with $100 million from his PayPal sale, aiming to reduce space transportation costs.
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1
SpaceX IPO Raises $50 Billion, Becomes World's Most Valuable Company
The merger proceeds smoothly and SpaceX executes its June 2026 IPO at the targeted $1.5 trillion valuation, raising $50 billion—the largest public offering in history. Starlink's growing profitability (projected 25% gross margins by 2026) and the orbital data center narrative attract massive institutional investment. The combined company's diversified revenue streams—launch services, satellite internet, AI infrastructure, and social media—justify the premium valuation.
Discussed by: Financial Times, Bloomberg, Morgan Stanley analysts
Consensus—
2
Regulatory Scrutiny Delays or Blocks IPO
Conflict-of-interest investigations into Musk's DOGE role and his companies' government contracts create regulatory uncertainty. xAI's ongoing investigations in Europe, India, Malaysia, and California over Grok's deepfake capabilities add complexity. Securities regulators require extended disclosure periods or impose conditions that delay the IPO past its June target, potentially into 2027.
Discussed by: Columbia Law School professor Eric Talley, Campaign Legal Center, Congressional investigators
Consensus—
3
Orbital Data Centers Prove Technically Infeasible
The orbital data center concept faces insurmountable technical challenges: cooling systems that work in space vacuum, radiation-hardened chips that maintain performance, and launch costs that remain too high even with Starship. The narrative collapses as a marketing tool, but SpaceX's core businesses (launch and Starlink) remain profitable. Investors reassess whether xAI's $1 billion monthly burn rate is sustainable.
Discussed by: Moffett Nathanson analysts, TMF Associates President Tim Farrar, aerospace engineers
Consensus—
4
xAI Cash Burn Drags Down Combined Entity
xAI's competition with OpenAI and Anthropic requires continued massive infrastructure spending. Despite the merger, the AI division's $1 billion monthly burn rate pressures SpaceX's profitability just as the company prepares for public market scrutiny. The IPO either raises less than targeted or values the company below expectations, reminiscent of how unprofitable divisions have historically weighed on conglomerate valuations.
Discussed by: Bloomberg, PitchBook analysts, venture capital observers
Consensus—
5
IPO Disclosure Deficiencies Trigger SEC Delay
Musk publicly admitted xAI 'was not built right' weeks after Tesla committed $2 billion to the company and after the $250 billion merger with SpaceX had already closed. Securities lawyers writing on D&O Diary note this raises questions about whether SpaceX's confidential S-1 adequately disclosed xAI's organizational and technical state to investors. If the SEC requires additional disclosures or issues comment letters on the draft, the IPO roadshow could slip past its June target.
British mobile operator Vodafone acquired German industrial conglomerate Mannesmann for $203 billion after a hostile takeover battle, creating the world's largest mobile telecommunications company. The deal involved Vodafone CEO Chris Gent convincing Mannesmann shareholders to accept an all-stock offer during the dot-com boom.
Outcome
Short Term
Vodafone became the world's largest mobile operator with 42 million subscribers across 25 countries.
Long Term
The deal held the record for largest acquisition for 26 years until the SpaceX-xAI merger. Vodafone wrote down over $50 billion in value from the acquisition by 2006 as the telecom bubble burst.
Why It's Relevant Today
The previous record-holder demonstrates both the risks of all-stock mega-mergers during market exuberance and how quickly valuations can deteriorate when underlying assumptions prove wrong.
AOL-Time Warner (2000)
January 2000 - June 2009
What Happened
America Online merged with Time Warner for $182 billion, promising to combine AOL's internet dominance with Time Warner's content empire. AOL's market capitalization at the time exceeded Time Warner's despite generating a fraction of the revenue.
Outcome
Short Term
The dot-com bubble burst months after the deal closed. By 2002, the combined company reported a $99 billion loss—one of the largest in corporate history.
Long Term
Time Warner fully divested AOL in 2009. The merger became a cautionary tale about cultural clashes, overvaluation, and betting on technology shifts (dial-up to broadband) that undermined the acquirer's core business.
Why It's Relevant Today
The SpaceX-xAI merger similarly combines a profitable infrastructure business with a fast-growing but cash-burning technology company, raising questions about whether orbital data centers represent the future or an AOL-style bet on technology that may not materialize.
Saudi Aramco IPO (2019)
December 2019
What Happened
Saudi Arabian Oil Company (Aramco) sold 1.5% of its shares on the Riyadh stock exchange, raising $25.6 billion at a $1.7 trillion valuation—the largest IPO in history. Crown Prince Mohammed bin Salman had originally targeted a $100 billion raise at $2 trillion valuation.
Outcome
Short Term
Aramco's market cap briefly reached $2 trillion on its second trading day. The listing supported Saudi Arabia's Vision 2030 economic diversification plan.
Long Term
The IPO raised less than half the original target due to valuation skepticism from international investors. Aramco remained primarily held by the Saudi government and domestic investors.
Why It's Relevant Today
SpaceX's targeted $50 billion IPO would nearly double Aramco's record. The Aramco experience shows that even well-capitalized companies with dominant market positions can struggle to achieve aspirational valuations when international investors scrutinize the deal.
