Warren Buffett

Buffett's approach is simple to describe and almost impossible to copy. He buys great businesses at fair prices and then just...

holds them. Forever.

He calls it "buy and hold" but that undersells it — he means hold until the sun burns out. He looks for companies with a real unfair advantage over competitors.

Something that protects them from being wiped out. He calls it a "moat" — like the water around a castle.

Think Coca-Cola. Everyone knows it.

Nobody can replicate it. He puts a LOT of money into a small number of bets — usually his top five holdings make up over 70% of everything.

Most fund managers would have a panic attack at that level of concentration. Buffett calls it being convicted.

His old mentor Graham taught him to hunt for cheap, beaten-down companies and flip them fast. Charlie Munger, his business partner for 45+ years, talked him out of that.

Munger said: just buy the best businesses you can find and never sell. Buffett admits that shift made him hundreds of billions of dollars.

Carl Icahn

Icahn buys undervalued companies with bad management. His thesis is consistently the same: there is enormous value being destroyed by entrenched executives who are more interested in keeping their jobs than returning value to shareholders.

He buys enough stock to force a confrontation. Sometimes management cleans itself up just from the threat of his involvement.

Sometimes he installs new people. Sometimes he forces a full sale of the company.

His version of value investing is more aggressive than Graham''s or Buffett''s. He doesn''t wait for the market to recognise value.

He forces the recognition. He is comfortable with conflict in a way most investors are not.

He sees confrontation with management as part of the job — not an unfortunate side effect of it.

Warren Buffett

Rule No. 1: Never lose money.

Rule No. 2: Never forget Rule No.

1. Buy businesses, not stocks — the distinction matters more than most investors realize.

Let compounding do the heavy lifting and get out of its way. Never use debt to invest.

Be fearful when others are greedy, greedy when others are fearful. Time in the market destroys timing the market in every long enough data set.

For most people, a low-cost S&P 500 index fund will outperform almost any active strategy, including most professional money managers — including, he's said, what most of his estate will go into after he's gone.

Carl Icahn

He genuinely believes management teams destroy shareholder value through complacency, self-dealing, and entrenchment. He sees himself as a corrective force — not a vulture, but a mechanism by which markets hold management accountable.

Whether that''s how it looks from inside the companies he targets is a different question. His rules: buy when nobody else wants it, apply pressure to unlock the value, sell when the value is recognised.

Don''t get sentimental about positions. Don''t let management tell you the company is more complex than it looks.

Warren Buffett

Buffett's whole thing is: do so much homework that the risk basically disappears. He doesn't diversify across 500 stocks to protect himself — he researches 10 companies so deeply that he's more confident about those 10 than most people are about anything.

He never borrows money to invest. Ever.

He keeps a mountain of cash at Berkshire — over $100 billion sitting around doing nothing — specifically so he can swoop in when everyone else is panicking and selling cheap. He once called derivatives "financial weapons of mass destruction" back in 2002.

Wall Street laughed. Then 2008 happened and Wall Street stopped laughing.

He doesn't predict where the stock market is going. He predicts whether a business will still be dominant in 20 years.

That's it.

Carl Icahn

He concentrates. He uses leverage.

He''s comfortable with positions that make other investors deeply uncomfortable. He''s also comfortable being wrong in public — he''s had positions go spectacularly badly and he doesn''t hide from them.

His Hertz position went bankrupt during COVID. His Herbalife long was a very public, very watched position on the opposite side of Bill Ackman''s short.

He doesn''t bluff. When he says he''s going to fight, he fights.

Warren Buffett

Despite a $120B net worth, Buffett still lives in the same gray stucco house in Omaha he bought in 1958 for $31,500. He drives himself to work.

Breakfast is McDonald's — he orders based on his mood: $2.61, $2.95, or $3.17. He plays bridge obsessively, often online with Bill Gates.

He drinks multiple Cokes a day (Berkshire owns a large stake in Coca-Cola; coincidence is left as an exercise to the reader). He has pledged to give away more than 99% of his wealth, primarily to the Bill & Melinda Gates Foundation and his children's foundations.

He takes a $100,000 annual salary from Berkshire. He does not own a smartphone.

Carl Icahn

He lives in Sunny Isles Beach, Florida. He works ferociously hard and has done so into his late 80s.

He''s a hands-on manager — not someone who delegates. He famously said: "If you want a friend on Wall Street, get a dog." He has a Maltese named Tiger.

He''s been a prolific poker player and was once considered one of the best amateur players in New York. He remarried in 2012; his current wife is Gail Golden.

He''s given some money to charity but not at the scale of Buffett or Gates — he''s made no secret of prioritising returns over philanthropy.

Warren Buffett

Apple. Berkshire started buying Apple in 2016 — late by any tech investor's standard, from a man who spent decades insisting he didn't understand technology.

By 2023, the position had grown to over $170 billion, returning more than 800%. Buffett called it the best business he'd ever seen and admitted he should have bought it earlier.

Honorable mention: American Express in 1963 during the Great Salad Oil Scandal, when he put 40% of the Buffett Partnership into AmEx at distressed prices while the rest of Wall Street was running away.

Carl Icahn

Apple. In 2013 he disclosed a $1.5 billion stake in Apple and published an open letter to Tim Cook urging a larger share buyback.

Apple eventually announced a significantly expanded buyback program. The stock rose.

Icahn made approximately $2 billion on the position. He didn''t have to engineer a hostile takeover — just making his involvement public was enough to move one of the largest companies in the world.

Warren Buffett

Buying Berkshire Hathaway. He bought it in 1962 as a cigar butt — a cheap, dying textile company — and then kept it instead of winding it down into a clean insurance holding company.

The C-corp structure meant decades of tax drag. He has estimated this single mistake — triggered partly by spite after the owner tried to lowball him on a buyout — cost Berkshire and its shareholders roughly $200 billion over 50 years.

He also admits missing Google and Amazon, both of which he understood well enough to buy and simply didn't.

Carl Icahn

TWA. He took over Trans World Airlines in 1985 using a leveraged buyout, extracted cash from the company to pay back the acquisition debt, and sold the valuable London routes to American Airlines for $445 million.

By the time he was done, TWA was a financially gutted airline. It went bankrupt in 1992, again in 1995, and was absorbed by American Airlines in 2001.

Icahn personally made hundreds of millions. The airline''s employees and creditors did not.

He''s defended his actions as legal. Legal and good for everyone are not always the same thing.

Warren Buffett

Warren Buffett was born in Omaha, Nebraska in 1930. He bought his first stock at age 11 — three shares of a company called Cities Service.

He paid $114. He was eleven.

By 14, he owned a 40-acre farm and had filed his first tax return. He applied to Harvard Business School and got rejected.

Best thing that ever happened to him, honestly. He ended up at Columbia instead, where he met Benjamin Graham — the guy who basically invented the idea of buying undervalued stocks.

After graduating in 1951, Buffett started his own investment partnership in Omaha with $105,000 from family and friends. He turned that into something much bigger, compounding at around 30% per year for over a decade.

Then in 1969, he shut it down and quietly took over a dying Massachusetts textile company he had bought partly out of spite. That company was Berkshire Hathaway.

What happened next is the greatest investing run in history — and it started with a grudge.

Carl Icahn

Carl Icahn grew up in Far Rockaway, Queens. His father was a failed opera singer who became a synagogue cantor.

Icahn studied philosophy at Princeton — graduated 1957 — then enrolled in NYU School of Medicine before dropping out after two years to join the army. He became a stockbroker at Dreyfus & Co.

in 1961, saved $400,000, and bought a seat on the New York Stock Exchange in 1968.

He spent the early years running option arbitrage — finding and exploiting small mispricings. He was very good at it.

In the late 1970s he pivoted to a bigger game: buying large stakes in undervalued companies and forcing management changes. His first major target was Tappan Company in 1979.

By the mid-1980s he was feared by corporate boards across America. Oliver Stone''s Gordon Gekko in Wall Street is directly based on the era Icahn created.

Warren Buffett

His main vehicle is Berkshire Hathaway — a company he took over in 1965 when it was a dying textile mill. He basically gutted the textile business and turned the whole thing into a giant money machine that owns other businesses.

Today it's one of the most valuable companies on earth. On the stock side, his biggest bet is Apple — worth over $175 billion at its peak.

He also owns huge chunks of Bank of America, Coca-Cola (since 1988 — he really doesn't sell), American Express, and Chevron. Then there are the companies Berkshire owns outright.

GEICO, one of the biggest car insurers in America. Burlington Northern Santa Fe, a massive railroad.

Dairy Queen, See's Candies, Duracell. Basically a random collection of boring, cash-generating businesses that he loves precisely because they're boring.

His first fund — Buffett Partnership Ltd. — ran from 1956 to 1969.

He returned around 30% per year while the market did 8.6%. Then he shut it down, said he couldn't find enough cheap stocks, and walked away at the top.

Carl Icahn

Icahn Enterprises is his publicly traded holding company. He''s been chairman since 1987.

Some of his most famous investments: TWA, which he took over in 1985, stripped its most valuable routes to pay back the debt used to acquire it, and left financially hollowed out — it went bankrupt twice after his tenure. Texaco, where he forced a settlement that paid shareholders.

Apple, where he took a $1.5 billion position in 2013 and published an open letter to Tim Cook demanding a larger share buyback. Apple eventually expanded the buyback.

The stock rose. Icahn made roughly $2 billion on the position without engineering a hostile takeover — the threat of his involvement was enough to move a $500 billion company.

He''s also had notable losses. Hertz went bankrupt during COVID while he held a large position.

He lost hundreds of millions.

Warren Buffett

University of Nebraska–Lincoln (B.S. in Business Administration, 1950).

Columbia Business School (M.S. in Economics, 1951) — the only school that mattered, where he studied under Benjamin Graham and got his only A+.

He also spent two years at the Wharton School before transferring. Harvard Business School rejected him.

He's described that rejection as one of the luckiest things that ever happened to him.

Carl Icahn

Princeton University, BA in Philosophy, 1957. NYU School of Medicine, dropped out after two years.

He''s credited Princeton''s philosophy training with teaching him to question conventional wisdom — which shows up directly in how he argues with corporate boards.