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.

Mark Zuckerberg

Zuckerberg does not invest in the traditional sense — he builds and holds. He controls Meta through a dual-class share structure that gives him roughly 54% of voting power with less than 15% economic ownership, meaning no board or shareholder can remove him regardless of how the stock performs.

He has made massive bets inside Meta — on mobile (right), Instagram (very right), WhatsApp (right), VR/metaverse (wrong so far), and AI (still playing out). His investment thesis is that social connectivity is a fundamental human need and whoever owns the infrastructure owns everything.

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.

Mark Zuckerberg

Zuckerberg thinks in decades, not quarters. His core belief is that the most important technology of the next century is whoever connects people at scale — first through social networks, then through AR/VR, and now through AI agents.

He is willing to absorb years of losses on bets he believes in. He says he would rather make a big bet and be wrong than be timid and miss the next platform shift.

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.

Mark Zuckerberg

Zuckerberg spent $36 billion on Reality Labs — VR and AR — between 2019 and 2023, with little to show in revenue. He did not flinch.

He also bet Facebook's entire business model on going mobile in 2012, acquired Instagram for $1 billion when it had 13 employees and no revenue, and has held through Congressional hearings, advertiser boycotts, and multiple existential challenges from competitors. His personal financial risk is minimized by his dual-class share structure — he controls voting power regardless of what the stock does, so no board or activist investor can force his hand.

He can lose at scale for as long as he believes the thesis.

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.

Mark Zuckerberg

He wore the same grey t-shirt every day for years — he said it reduced decision fatigue. He trains MMA and Brazilian jiu-jitsu seriously, competing in actual tournaments.

He wakes up early, spends mornings with his family, and starts work at 8am. He has spoken about designing his schedule to protect creative work in the mornings.

He reportedly does not check email first thing.

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.

Mark Zuckerberg

Acquiring Instagram for $1 billion in 2012. Instagram was growing fast, potentially threatening Facebook's dominance with younger users.

Facebook bought it. It now generates an estimated $40-60 billion in annual revenue.

Many consider it the best acquisition in tech history on a return basis — $1 billion in for what became a $100B+ asset.

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.

Mark Zuckerberg

The metaverse bet. From 2021 to 2023, Meta spent over $50 billion on Reality Labs — its VR and metaverse division — and generated minimal revenue.

The division lost $16 billion in 2023 alone. Meta's stock fell nearly 75% at its 2022 trough.

Zuckerberg was widely mocked, called the metaverse a disaster, and faced enormous internal and external pressure. He then pivoted hard to AI and the stock recovered.

The metaverse losses remain one of the most expensive executive vanity projects in corporate history.

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.

Mark Zuckerberg

Mark Zuckerberg launched Facebook from his Harvard dorm in February 2004. By the end of 2004, the site had 1 million users.

He turned down a $1 billion acquisition offer from Yahoo in 2006. By 2012, Facebook went public at a $104 billion valuation — the largest tech IPO in history at the time.

The stock immediately fell 50%. It then recovered to become one of the most valuable companies in the world.

In 2012, Facebook acquired Instagram for $1 billion (now worth over $100 billion). In 2014, it acquired WhatsApp for $19 billion.

In 2021, he rebranded the parent company to Meta to signal a pivot to the metaverse — a move that cost over $50 billion in investment and destroyed significant shareholder value before the company course-corrected toward AI.

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.

Mark Zuckerberg

Meta Platforms (CEO and controlling shareholder — holds majority voting control through supervoting shares). Key acquisitions: Instagram (2012, $1B), WhatsApp (2014, $19B), Oculus VR (2014, $2B).

Chan Zuckerberg Initiative (co-founded with wife Priscilla Chan — philanthropic LLC).

Bill Gates

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

Mark Zuckerberg

Harvard University — studied computer science and psychology. Dropped out in 2004 to move Facebook to Palo Alto.