Elon Musk is famous because he built and now leads six major companies at once—Tesla, SpaceX, xAI, X, Neuralink, and The Boring Company—spanning electric vehicles, reusable rockets, AI models, social media, and brain-computer interfaces. That combination, plus a Tesla pay package worth up to $1 trillion and a 2026 net worth that made him the first person known to cross $1 trillion, is what keeps him the most talked-about entrepreneur on the planet.
From Zip2 to PayPal: How Musk Made His First Fortune
Musk's first company was Zip2, an online mapping and business-directory service he co-founded with his brother Kimbal in 1995 after moving to Silicon Valley instead of starting a physics PhD at Stanford. Compaq bought Zip2 in 1999 for $307 million. Musk rolled his share into X.com, an online financial-services startup he founded that same year; X.com merged with a rival and became PayPal in 2001, and eBay acquired PayPal in 2002 for $1.5 billion. Those two exits, not Tesla or SpaceX, are what gave Musk the capital to bankroll everything that came after.
Tesla and the Trillion-Dollar Pay Package
Musk joined Tesla's board in 2004 and became CEO in 2008, steering it from a niche EV startup into the company most credited with forcing the entire auto industry to go electric. Tesla has since expanded into Full Self-Driving (FSD) software and the Optimus humanoid robot. In November 2025, Tesla shareholders approved a new Musk compensation package—worth close to $1 trillion if every milestone is hit—with over 75% of the vote in favor, despite opposition from proxy advisors Glass Lewis and ISS. The package grants roughly 423 million shares over 10 years, tied to targets that scale from $50 billion up to $400 billion in annual adjusted profit, 20 million vehicle deliveries, 10 million active FSD subscriptions, 1 million Optimus robots delivered, and 1 million robotaxis in commercial service.
SpaceX: Reusable Rockets and a $1.77 Trillion IPO
Musk founded SpaceX in 2002 to cut the cost of spaceflight through reusability, a bet that looked reckless for years and now defines the launch industry. By 2026, SpaceX's Starship program had flown a dozen times, including the first-ever catch of a returning Super Heavy booster by the launch tower's mechanical arms—proof that a booster can be caught, refueled, and reflown within hours instead of months. SpaceX also runs Starlink, now deploying high-throughput V3 satellites, in some cases launched directly from Starship's payload bay. In June 2026, SpaceX completed its long-awaited IPO at $135 a share, valuing the company at roughly $1.77 trillion.
xAI, Grok, and the SpaceX Merger
Musk founded xAI in July 2023 as a direct competitor to OpenAI, built around the Grok chatbot and the Colossus supercomputer. In February 2026, SpaceX acquired xAI in an all-stock deal that valued SpaceX at about $1 trillion and xAI at $250 billion, folding rockets, Starlink, Grok, and X into a single roughly $1.25 trillion entity in which Musk holds an estimated 42–43% economic stake. The stated logic is that Grok's AI research feeds back into Tesla's self-driving stack, Neuralink's brain interfaces, and SpaceX's own systems. Grok itself pulled in an estimated $350 million in revenue in 2025, though Forbes reported its usage declining across both mobile and web through 2026 as rival chatbots gained ground.
X (Formerly Twitter) and the Everything-App Bet
Musk acquired Twitter for $44 billion in October 2022 and rebranded it X in July 2023, pitching it as an "everything app" combining messaging, payments, video, and AI. X Corp. was absorbed into xAI in March 2025 for $33 billion, then into SpaceX along with the rest of xAI in February 2026—meaning the platform Musk bought as an independent company is now a subsidiary three layers deep inside his SpaceX-led conglomerate. The acquisition still carries legal baggage: in March 2026, a jury found Musk liable for misleading Twitter investors in the run-up to the deal.
Neuralink and The Boring Company
Musk's two smaller ventures round out the portfolio. Neuralink develops implantable brain-computer interfaces aimed at restoring movement and communication for people with paralysis. The Boring Company, founded in 2016, digs tunnels for high-speed underground transit, including the Vegas Loop. Both are privately held and dwarfed in valuation by Tesla, SpaceX, and xAI, but Musk has said their research also feeds the same AI and robotics stack as Optimus and Grok.
Musk's Companies at a Glance
| Company | Founded / Acquired | Sector | 2026 Milestone |
|---|---|---|---|
| Tesla | Joined 2004, CEO since 2008 | EVs, FSD, robotics | Shareholders approve ~$1T pay package (Nov 2025) |
| SpaceX | Founded 2002 | Rockets, satellites | IPO at $135/share, ~$1.77T valuation (June 2026) |
| xAI | Founded July 2023 | AI models (Grok) | Acquired by SpaceX for $250B (Feb 2026) |
| X (Twitter) | Acquired 2022, rebranded 2023 | Social media | Now owned by SpaceX via xAI |
| Neuralink | Founded 2016 | Brain-computer interfaces | Ongoing human trials |
| The Boring Company | Founded 2016 | Tunneling, transit | Vegas Loop expansion |
How Musk Became the World's First Trillionaire
After the SpaceX-xAI merger in February 2026 and the restoration of his large Tesla compensation package, Musk's net worth was estimated at around $844 billion. When SpaceX's shares began trading publicly in June 2026, his stake pushed his net worth past $1 trillion, making him the first person known to reach that figure. His roughly 42% stake in the combined SpaceX-xAI entity alone was worth an estimated $735 billion at the deal's midpoint valuation, on top of his separate Tesla holdings.
DOGE and the Political Controversy
In early 2025, Musk became the most visible leader of the Department of Government Efficiency (DOGE), a Trump administration effort that promised to cut $2 trillion in federal spending. Musk stepped down as DOGE chief in May 2025 after publicly criticizing a Trump spending bill for increasing the deficit. DOGE's legacy remains contested: a Government Accountability Office report published in August 2026 found that DOGE's claimed $110 billion in savings could not be verified and cited multiple issues with the transparency and reliability of its reporting. The initiative also drew sustained protests and legal challenges alleging it overstepped its authority and bypassed federal privacy and workforce-reduction rules.
FAQ
What companies does Elon Musk own or lead?
Musk leads six major companies: Tesla (EVs and robotics), SpaceX (rockets and Starlink), xAI (the Grok AI model, now a SpaceX subsidiary), X, formerly Twitter (social media, also folded into SpaceX via xAI), Neuralink (brain-computer interfaces), and The Boring Company (tunneling and transit).
Is Elon Musk the richest person in the world?
Yes. After SpaceX's June 2026 IPO pushed his stake's value past $1 trillion, Musk became the first person known to reach trillionaire status, driven primarily by his roughly 42% stake in the merged SpaceX-xAI entity and his separate Tesla shareholding.
How much is Elon Musk's Tesla pay package worth?
Tesla shareholders approved a package in November 2025 worth up to nearly $1 trillion in stock—about 423 million shares—if Musk hits milestones over 10 years, including $400 billion in annual adjusted profit, 20 million vehicle deliveries, 10 million FSD subscriptions, 1 million Optimus robots delivered, and 1 million robotaxis in commercial operation.
Why did SpaceX acquire xAI?
SpaceX acquired xAI in an all-stock deal in February 2026, valuing SpaceX at about $1 trillion and xAI at $250 billion, to consolidate Musk's AI, rocket, satellite, and social-media operations under one roughly $1.25 trillion entity ahead of SpaceX's June 2026 IPO.
What is Grok and how well is it performing?
Grok is xAI's AI chatbot, built alongside the Colossus supercomputer as a direct rival to ChatGPT. It generated an estimated $350 million in revenue in 2025, but Forbes reported its user numbers declining across mobile and web through 2026 as competing chatbots gained share.
Does Elon Musk still own X (formerly Twitter)?
Indirectly, yes. Musk bought Twitter outright for $44 billion in 2022 and renamed it X in 2023, but X Corp. was absorbed into xAI in March 2025 and then into SpaceX along with the rest of xAI in February 2026, making it a subsidiary of his SpaceX-led conglomerate rather than a standalone company.
How did Elon Musk make his first money?
Musk's first fortune came from Zip2, an online mapping startup he co-founded in 1995 and sold to Compaq in 1999 for $307 million, followed by X.com, which became PayPal and was sold to eBay in 2002 for $1.5 billion.
What was Elon Musk's role in DOGE?
Musk led the Department of Government Efficiency (DOGE) starting in early 2025, pushing aggressive federal spending cuts before stepping down in May 2025. A GAO report in August 2026 found DOGE's claimed $110 billion in savings could not be reliably verified.
Further reading:
- Why Is Claude So Expensive? Anthropic's Pricing Explained (2026)
- Top Free Chinese AI Models for Coding in 2026: DeepSeek, Qwen, GLM, and Kimi Compared
- Claude Fable 5 Is Back Online: What the Export-Control Suspension and Jailbreak Fix Actually Mean
- Why Are AI Models So Expensive? How to Plan Model Use for Low-Cost, High-Output Work (2026 Guide)