Peter Lynch

Lynch invented the phrase "tenbagger" — a stock that returns ten times your money. He was specifically looking for companies that could do that.

His method was deceptively simple: invest in what you know. Not what you know about macroeconomics or interest rates — what you know about everyday life.

What stores are you shopping at? What products are your kids obsessed with?

What new thing are you using that feels like it could be everywhere in five years? If you're noticing a company before Wall Street analysts have caught on, you have a real edge.

He categorized stocks into six types: slow growers (stable, boring), stalwarts (big companies, modest returns), fast growers (small and aggressive — where the tenbaggers live), cyclicals (tied to economic cycles), turnarounds (troubled companies that might recover), and asset plays (companies with hidden value the market hasn't priced in). His genius was applying rigorous fundamental analysis to companies most Wall Street analysts dismissed as too small or too mundane to bother with.

Benjamin Graham

He treated stocks as ownership stakes in real businesses — not tickets in a lottery. Before Graham, most investment advice was a mix of tips, rumors, and gut feeling.

He brought math to it. His core concept was intrinsic value — a calculation of what a business is actually worth based on its current earnings, assets, and finances.

If the market price is significantly below that number, you buy. The gap between price and value is what he called the margin of safety: the most important concept he ever introduced.

The bigger the margin of safety, the less damage an error in your analysis can do.

He also invented the allegory of Mr. Market — an imaginary business partner who shows up every day offering to buy or sell your shares at whatever price his mood dictates.

When he's euphoric, prices are too high. When he's depressed, prices are too low.

Your job is to exploit his mood swings, not follow them. This was 1949.

It's still the clearest explanation of how to think about market volatility that anyone has ever written.

Peter Lynch

He believed the average person has a real edge over professional fund managers — specifically the access to everyday life that analysts in offices don't have. You know which stores are packed on Saturday afternoon.

You know which new products your kids are obsessed with. Wall Street analysts often don't.

His most repeated principle: invest in what you know. His second: love a company's product is not sufficient on its own — you still need to understand the fundamentals.

Third: stomach matters more than brain in investing. The biggest thing separating successful investors from unsuccessful ones isn't intelligence — it's the ability to stay calm when the market drops 20 percent and everything feels like it's ending.

Benjamin Graham

Three ideas define him. First: the margin of safety.

Always buy with a meaningful cushion between what you pay and what the thing is actually worth. If you're right, you do very well.

If you're wrong, you don't get wiped out. Second: Mr.

Market is your servant, not your master. The market's daily mood is irrelevant to whether your underlying analysis is correct.

Ignore the noise. Third: an investment operation is one which, upon thorough analysis, promises safety of principal and an adequate return.

Everything else is speculation. He was blunt about this distinction.

Most of what people called investing in his era — and honestly in most eras — was speculation dressed up in confident language.

Peter Lynch

Lynch ran a very diversified portfolio — sometimes over 1,000 positions — which cuts against the concentration gospel of Buffett and Munger. He justified it simply: if you find enough genuinely great small companies, you don't need to pick just one.

Some will fail. The tenbaggers more than compensate.

He wasn't reckless — he did detailed fundamental research on every holding. But he was comfortable owning things that looked messy or unfamiliar on the surface if the numbers told a better story.

He famously said he'd rather own 20 stocks he didn't know well than five stocks he thought he knew perfectly. The point being: false confidence in a concentrated position kills you.

Breadth buys time.

Benjamin Graham

He was conservative to the point that contemporaries sometimes called it excessive caution. He wanted a margin of safety large enough to survive being significantly wrong in his own analysis.

He preferred businesses with consistent earnings histories, strong balance sheets, and low debt. He did not trust projections about future growth — he trusted current, auditable numbers.

If a company looked cheap based on what it had already proven it could earn, he was interested. If it required optimistic future projections to justify the price, he was not.

He believed overconfidence in predictions was the primary source of investment losses, full stop.

Peter Lynch

After retiring from Magellan in 1990, Lynch has spent most of his time on philanthropy. He and his wife Carolyn donated tens of millions to education through the Lynch Foundation, focusing on Catholic education and scholarship programs in Massachusetts.

He lives quietly for someone worth hundreds of millions. He speaks at Fidelity events occasionally, plays golf, and is generally not seeking attention.

He has said that the best decision he ever made was retiring at 46 — that no amount of money is worth missing your kids grow up.

Benjamin Graham

He was genuinely modest about money. He found the intellectual puzzle of valuation more interesting than the wealth it could produce.

He retired to California on a comfortable but not extravagant income. He taught at Columbia for nearly three decades for standard academic pay.

His students — particularly Warren Buffett — went on to make orders of magnitude more money than Graham himself did by applying his methods. He spent his later years writing, revising his ideas, and reportedly reading Latin and Greek for pleasure.

He was described by people who knew him as charming, witty, and multilingual.

Peter Lynch

Fannie Mae. Lynch bought it heavily in the mid-1980s when almost nobody wanted it.

It was a housing finance company drowning in problem mortgages. Lynch dug into the fundamentals and decided the problems were fixable and the underlying business was genuinely valuable.

He was right. The stock went from roughly $2 to $40.

That single position generated hundreds of millions for the fund. His Chrysler bet was similar — he bought heavily when the company was a bankruptcy rumor and almost no one else would touch it.

Both worked because Lynch was willing to do the research on things everyone else had already decided were too ugly to look at.

Benjamin Graham

GEICO. In 1948, Graham-Newman invested $720,000 in GEICO when it was a small, obscure government employees insurance operation.

This was roughly half the fund's total assets — a concentration level Graham himself had written against. The position grew to be worth tens of millions before he died.

Beyond the financial return, the GEICO investment influenced Warren Buffett to study the company intensively, and Buffett eventually acquired all of GEICO for Berkshire Hathaway in 1996. One investment produced ripples across a century of finance.

Peter Lynch

Selling great companies too soon. He got into Walmart early and sold too soon.

He did the same with several other retailers that went on to become enormous. By his own account, his biggest mistake pattern was taking profits on genuine multi-decade compounders before they had compounded enough.

He also acknowledged that managing a $14 billion fund was fundamentally different from managing $18 million. The sheer size limited which companies he could meaningfully invest in — you can't move the needle on a $14 billion fund by buying a $50 million company.

He burned himself out keeping up with over a thousand positions. He retired at 46.

He's said he doesn't regret it.

Benjamin Graham

The 1929 crash. He had spent years writing about valuation and the concept of cheap stocks.

He still got caught up in the late 1920s bull market excitement and didn't apply his own principles rigorously enough. He lost significant money.

He later described it with uncommon honesty — not blaming bad luck, not glossing over it, just saying he failed to follow his own rules. The crash was the crucible.

Security Analysis came out in 1934. The Intelligent Investor followed in 1949.

Both books came directly from working through what went wrong and why. The mistake produced the framework that generated more investment wealth than almost any other set of ideas in history.

Peter Lynch

Peter Lynch grew up in Newton, Massachusetts. His father died when Lynch was 10, and his mother had to work to keep the family going.

Lynch caddied at the Brae Burn Country Club to help out. One of his regular clients was D.

George Sullivan, president of Fidelity Investments. Sullivan eventually offered Lynch a summer job at Fidelity — the kind of break you earn by showing up and doing the work.

Lynch studied history, psychology, and philosophy at Boston College — not finance — and said later that was probably an advantage. Too many finance students learn to look at spreadsheets and miss the obvious things happening in front of them.

He got an MBA from the Wharton School, joined Fidelity full-time in 1969, and took over the Magellan Fund in 1977. At the time, Magellan had $18 million in assets and was closed to new investors.

When Lynch retired at 46 in 1990, it had $14 billion and was the largest actively managed mutual fund in the world. He beat the S&P 500 in 11 of his 13 years managing it.

He's been a vice chairman at Fidelity in an advisory capacity ever since.

Benjamin Graham

Benjamin Graham was born Benjamin Grossbaum in London in 1894. His family moved to New York when he was a year old.

His father died when Graham was nine. His family lost most of their savings in the 1907 financial panic.

He grew up with a serious understanding of what it actually meant to lose money.

He graduated from Columbia University in 1914 at age 20, second in his class. The university offered him teaching positions in three departments — English, philosophy, and mathematics.

He chose Wall Street instead. He started the Graham-Newman Corporation in 1926, which functioned as a hedge fund before anyone used that term.

He lost heavily in the 1929 crash — which he later admitted meant he hadn't been following his own principles rigorously enough. He spent the 1930s rebuilding, writing, and thinking.

He taught at Columbia Business School from 1928 to 1956. His greatest student was Warren Buffett, who took his class in 1950 and called it the most important educational experience of his life.

Graham retired to California in 1956 and spent his last years revising his investment philosophy and living simply. He died in Aix-en-Provence, France, in 1976.

Peter Lynch

His entire professional life ran through Fidelity Investments. He managed the Magellan Fund from 1977 to 1990 — 13 years of sustained outperformance that has never been matched at that scale.

His major holdings during that run included Fannie Mae, which he rode from $2 to $40; Chrysler, which he bought near bankruptcy; and various retailers that nobody on Wall Street wanted to touch.

He was famous for finding companies in everyday life before analysts noticed them. He found Dunkin' Donuts because his wife liked the coffee.

He investigated L'eggs pantyhose after his wife bought them at a grocery store. He'd walk through a shopping mall and watch which stores were packed and which were empty — and then go home and read the financials to see if the story held up.

Benjamin Graham

Graham-Newman Corporation, which he co-founded and ran from 1926 to 1956, delivered roughly 20% annual returns over that period — outstanding for any era, remarkable given it spanned the Great Depression. His single best investment was GEICO.

In 1948, the fund put approximately $720,000 into GEICO — about half the fund's total assets at the time. That was a violation of his own concentration rules, which tells you how strongly he felt about it.

When the fund dissolved in 1956, GEICO shares were distributed to investors. Graham held his personally.

By the 1970s they were worth millions. Warren Buffett later bought the entire company for Berkshire Hathaway.

The ripple effect of that one position is impossible to fully calculate.

Peter Lynch

Boston College, class of 1965 — history, psychology, philosophy. Wharton School of Business, MBA.

He's on record saying studying history at Boston College was more useful for investing than anything he learned at Wharton. The historical pattern recognition, the ability to contextualize events — that showed up in how he thought about cycles and companies.

Benjamin Graham

Columbia University, class of 1914. Graduated at age 20, second in his class.

Offered teaching positions in English, philosophy, and mathematics — chose Wall Street. Taught at Columbia Business School from 1928 to 1956.

Also lectured at UCLA in retirement. His formal education ended at Columbia but his actual education never stopped.