Elon Musk

Musk does not invest in the traditional sense. He builds companies and holds them.

His strategy is to find industries where he believes the incumbent players are too slow, too cautious, or fundamentally wrong in their assumptions — and then attack from first principles. He has said he asks "what is the physics limit?" of any problem, not what the industry standard is.

He holds massive concentrated equity in each of his companies. He does not diversify.

He famously said he was "asset rich and cash poor" and at times has literally borrowed money against his Tesla stock to fund other ventures.

Bill Gates

Gates invests through Cascade Investment LLC in established, cash-generative businesses — railroads, waste management, agricultural equipment, farmland. His biggest single Cascade holding for years was Canadian National Railway.

He has sold most of his Microsoft stock over time. His investment philosophy outside Microsoft mirrors Buffett's: durable businesses with pricing power, bought at reasonable prices.

Elon Musk

Build things that matter. He has said he did not start companies to make money — he started them because electric vehicles and space were the most important problems he could work on.

He believes the only way to understand if something is possible is to try it. His financial philosophy is: do not optimize for personal comfort, optimize for impact.

He will borrow against his assets, take massive personal financial risk, and maintain concentrated positions that would terrify any normal financial advisor.

Bill Gates

His core framework: read obsessively, think long-term, and separate emotion from analysis. He takes annual Think Weeks — solo retreats to a lake cottage in the Pacific Northwest where he reads papers and books for two weeks with no interruptions.

He publishes a reading list twice a year at gatesnotes.com. He has said that the best investment he ever made was paying $100,000 to take Warren Buffett to dinner every year.

Elon Musk

Musk borrowed against his Tesla stock to buy Twitter. He sold Tesla shares to fund SpaceX.

In 2008, with both Tesla and SpaceX weeks from bankruptcy, he split his last $30 million between them because he had already decided that if they died, he'd be broke — and that was fine. He told his biographer he did not fear losing everything.

What he feared was not trying. His pain threshold for financial loss is essentially unlimited, which makes him either the most courageous or the most reckless operator in modern business history, depending on which week you ask.

Bill Gates

Gates's risk tolerance is intellectual and deliberate rather than impulsive. He takes genuinely large bets — TerraPower on nuclear fission, billions into climate technology, the Gates Foundation's campaigns to eradicate diseases that kill millions — but only after intense research.

His Think Weeks exist to force slow, rigorous thinking on big decisions. At Microsoft, he kept enough cash on hand to run the company for a full year with zero revenue because he never wanted short-term survival pressure to force a bad long-term decision.

That discipline carries into his personal finances.

Elon Musk

For years, Musk did not own a house. He sold all his California properties and reportedly lived in a small modular home near SpaceX's facilities in South Texas.

He drives a Tesla. He is known for working extreme hours — there are accounts of him sleeping on factory floors during Tesla production crises.

He has said he does not spend much time thinking about his net worth and that money is only useful as a resource to accelerate his missions.

Bill Gates

He wakes up early, exercises on a treadmill while watching documentaries, and reportedly does the dishes every night. He has said dishes are meditative.

For a man worth $130 billion, the emphasis on routine is either deeply grounded or very good PR. He drove himself to work at Microsoft for years and lived in a normal house long after he could afford otherwise.

Elon Musk

Tesla. He invested his own money when it was burning cash and nearly bankrupt, held through multiple near-death experiences, and watched it grow from a startup nobody believed in to a $1 trillion market cap company.

He also holds SpaceX equity — a private company that was valued at $350 billion by late 2024 and that has rewritten the economics of space launch.

Bill Gates

Microsoft Windows. The decision to license MS-DOS to IBM for the PC while retaining the right to sell it to other manufacturers was arguably the most lucrative business decision in tech history.

Every PC manufacturer then licensed Windows. Gates captured the entire PC market without building the hardware.

By 1999, Microsoft's market cap hit $616 billion.

Elon Musk

Twitter / X. He paid $44 billion for it in 2022, widely regarded as overpaying dramatically.

The company lost most of its advertising revenue after Musk's takeover. Advertisers pulled out.

He feuded publicly with brands, journalists, and regulators. By most financial metrics, it was an expensive and chaotic acquisition.

His stated defense is that X is a long-term platform for free speech and AI training data.

Bill Gates

Missing the internet. Microsoft was late and initially dismissive of the internet as a platform.

Gates eventually course-corrected and wrote the Internet Tidal Wave memo in 1995, redirecting the entire company toward internet strategy. But the delay allowed Netscape to establish footholds, and Microsoft's browser monopoly tactics led to the landmark antitrust case United States v.

Microsoft in 2000, which threatened to break up the company.

Elon Musk

Elon Musk was born in Pretoria, South Africa in 1971. He taught himself to code, sold a video game called Blastar at age 12 for $500, then moved to Canada at 17 to avoid mandatory South African military service.

He transferred to the University of Pennsylvania, sold Zip2 (a web software company) to Compaq for $307 million in 1999, then founded X.com — which became PayPal — and sold it to eBay for $1.5 billion in 2002. He plowed essentially all of it into SpaceX and Tesla simultaneously, nearly went bankrupt in 2008, and then watched both companies become dominant.

Tesla became the most valuable car company on earth. SpaceX became the dominant commercial launch provider.

He bought Twitter for $44 billion in 2022, renamed it X, fired most of the staff, and called it a platform for free speech. He became the world's richest person multiple times over.

Bill Gates

Bill Gates was born in Seattle in 1955. He taught himself to program on a PDP-10 at age 13.

He enrolled at Harvard in 1973, dropped out in 1975, and moved to Albuquerque with Paul Allen to found Microsoft. Their break came when they licensed an operating system to IBM for the original PC — and crucially, retained the rights to sell it to anyone else.

That decision made Microsoft. Windows became the standard operating system for the world.

Gates became the world's richest person in 1995 and held that title for much of the next 15 years. He transitioned out of Microsoft's day-to-day around 2000 and fully moved into philanthropy via the Gates Foundation.

Elon Musk

Tesla (CEO). SpaceX (CEO and chief engineer).

X / Twitter (owner and executive chairman). xAI (founder).

Neuralink (co-founder). The Boring Company (founder).

Early investor in DeepMind (sold stake). Previously: Zip2 (sold 1999), PayPal / X.com (sold 2002).

Bill Gates

Microsoft (co-founder, former CEO and chairman). Cascade Investment LLC (his personal investment vehicle).

Bill & Melinda Gates Foundation (co-chair). Major holdings through Cascade include Canadian National Railway, Deere & Company, and significant farmland.

Early Microsoft equity remains a massive portion of his net worth.

Elon Musk

University of Pennsylvania — dual bachelor's degrees in economics (Wharton) and physics. Started a PhD in energy physics at Stanford, dropped out after two days to start Zip2.

Bill Gates

Harvard University — studied mathematics and computer science. Dropped out in 1975 after his sophomore year to found Microsoft.