Charlie Munger

Munger's whole thing is mental models. The idea is simple: instead of being an expert in one field, you learn the core concepts from as many different fields as possible — psychology, biology, physics, economics, history — and then use that whole toolkit to think about problems.

He calls it a latticework of mental models. It sounds like a self-help concept.

It's actually how he consistently made better decisions than almost everyone around him. On investing, he pushed Buffett away from his old mentor's approach — which was basically "find dirt-cheap companies and flip them fast" — toward something more durable: find the best businesses in the world and hold them forever.

The key word he uses is moat. A business so dominant that competitors can't touch it.

Think Coca-Cola. He was also deeply influenced by psychology, particularly the ways humans reliably fool themselves.

He gave a famous talk called "The Psychology of Human Misjudgment" listing 25 ways our brains get things wrong. Reading it once will change how you make decisions.

Stig Brodersen

Pure value investing in the Buffett-Graham tradition. Stig looks for companies trading below intrinsic value with strong competitive advantages, honest management, and a margin of safety.

He takes a concentrated approach — he'd rather own 10-15 well-understood positions than 50 diversified ones. He does deep fundamental analysis: reading annual reports, understanding unit economics, and calculating intrinsic value using discounted cash flow models.

He has an international perspective that most American value investors lack — he actively looks at companies in Europe, Asia, and emerging markets. He believes international markets are less efficiently priced than US markets, creating more opportunities for value investors.

Charlie Munger

Invert. Always invert.

That's his most famous rule — borrowed from the mathematician Jacobi. Instead of asking "how do I succeed?" ask "what would guarantee failure, and then avoid those things." It sounds obvious.

Almost nobody actually does it. He believes the secret to a good life and good investing is the same: figure out what you want to avoid, avoid it relentlessly, and most good things follow.

On wealth: getting rich isn't the hard part — keeping it is. Most people blow up by using borrowed money, getting greedy at the top, or panicking at the bottom.

Don't do those things. On decisions: only make the big bet when you're very sure.

Be patient for a long time, then move fast when the opportunity is obvious.

Stig Brodersen

Stig believes that investing should be approached with intellectual humility and continuous learning. His core philosophy: understand what you own, buy it at a price that gives you a margin of safety, and be patient.

He thinks most investors trade too frequently and react too emotionally to short-term market movements. He values international diversification more than most American investors, arguing that US-centric portfolios miss significant opportunities.

He also believes strongly in the democratization of financial education — TIP was built on the principle that world-class investing knowledge should be free.

Charlie Munger

Munger's approach to risk: don't take risks you don't understand, and don't take risks you don't need to. He kept things simple.

He concentrated into a small number of businesses he understood deeply. He used borrowed money only a handful of times in his whole life, and said so plainly — his own partnership fell by more than half in 1973-74 partly because of it.

He kept large cash reserves. His view on diversification was almost the opposite of what most financial advisors tell you — he thought spreading money across 50 stocks was an admission that you hadn't done enough homework.

If you've done the work, you concentrate. If you haven't, maybe don't invest at all.

Stig Brodersen

Moderate. Stig is concentrated but disciplined.

He won't buy something unless his downside analysis shows limited risk of permanent capital loss. He's willing to hold cash when he can't find cheap stocks — sometimes 20-30% of his portfolio.

He's less speculative than Preston and has stayed closer to the original value investing framework. He manages risk through deep understanding of each position rather than through broad diversification.

Charlie Munger

Munger lived in the same house in Los Angeles for most of his adult life. He was famously frugal — not in a miserable way, but in a "I genuinely don't care about most things money buys" way.

He flew commercial until fairly recently. He read obsessively.

He described himself as a book with legs. His children joked that he was more interesting to talk to than almost anyone alive, but would only engage on topics he found intellectually stimulating.

He donated massively to education — hundreds of millions to the University of Michigan, UC Santa Barbara, Stanford and other institutions, often with very specific conditions attached. He designed buildings as a hobby and funded their construction himself.

He died at 99 worth around $2.6 billion — extraordinary by any measure, and somehow modest given he sat next to one of the richest men in history for 45 years.

Stig Brodersen

Stig is methodical and disciplined. He reads extensively — annual reports, investing books, economic history, and academic research.

He maintains a structured process for evaluating potential investments and doesn't deviate from it based on market emotions. He lives in Denmark and maintains a lower public profile than many financial media personalities.

He reinvests podcast income into both his business and his personal investment portfolio.

Charlie Munger

See's Candies. In 1972, Munger convinced a reluctant Buffett to pay what seemed like an expensive price — $25 million — for a California candy company.

Buffett thought it was too much. Munger held firm.

See's has since generated over $2 billion in profit for Berkshire, basically funding dozens of other acquisitions. It also taught Buffett the single most important lesson of his career: paying a fair price for a great business beats getting a cheap price for a mediocre one.

That one deal changed the entire direction of Berkshire Hathaway.

Stig Brodersen

Co-building The Investor's Podcast Network into a global phenomenon. The show's reach — 100 million+ downloads — means Stig has directly contributed to the financial education of millions of people across dozens of countries.

His interviews with top investors have created a free archive of investing wisdom that rivals any MBA curriculum. On a personal investment level, his consistent application of value principles across international markets has produced solid long-term returns.

Charlie Munger

Munger is famous for avoiding mistakes more than for making spectacular wins — his whole philosophy is about not doing stupid things. But he's admitted to a few.

He said Berkshire was too slow to move into BYD, China's electric vehicle company, despite knowing it was exceptional for years before they finally bought in. He also held too much Wesco Financial for too long when the money could have been put to better use elsewhere.

His most honest self-criticism: he wished he had moved faster when the evidence was already clear. For a man who spent his career warning others about psychological biases, he wasn't immune to them.

Stig Brodersen

Stig has been open about early investment mistakes where he bought companies that were cheap for a reason — value traps where the low price reflected genuine business deterioration rather than market mispricing. He's talked about the importance of distinguishing between "cheap" and "good value," which is one of the hardest lessons in value investing.

He's also acknowledged that running a media business while managing a personal portfolio creates time allocation challenges.

Charlie Munger

Charlie Munger grew up in Omaha — same city as Buffett, but they didn't know each other yet. His father was a lawyer.

So was his grandfather. Charlie became one too, but he was clearly more interested in figuring out how the world worked than in courtrooms.

He studied math at the University of Michigan, got drafted into World War II, trained as a meteorologist, and somehow ended up at Harvard Law School without ever finishing an undergraduate degree. Harvard took him anyway.

He graduated in 1948 and moved to California to practice law. He was good at it.

He was also quietly building a real estate business on the side that made him more money than law ever did. He and Buffett met at a dinner in Omaha in 1959.

Munger was 35. Buffett was 28.

By the end of the night, Buffett was trying to convince Munger to go into investing full time. It took about a decade.

Munger ran his own investment partnership from 1962 to 1975 — returned 24% annually while the market did 6.4%. Then he fully merged his career with Buffett's at Berkshire, where he stayed until his death in 2023.

Stig Brodersen

Stig Brodersen grew up in Denmark and studied business and finance. He earned his MBA and worked in corporate finance before deciding his real passion was investing education.

He connected with Preston Pysh online through their shared love of Warren Buffett and Benjamin Graham, and they launched The Investor's Podcast in 2014. The concept was brilliantly simple: read the classic investing books that every successful investor recommends, break them down chapter by chapter in plain language, and give them away for free as a podcast.

It worked beyond anyone's expectations. The show grew into The Investor's Podcast Network, now hosting multiple shows including We Study Billionaires, Millennial Investing, and Bitcoin Fundamentals.

The network has surpassed 100 million total downloads. When Preston shifted his focus to Bitcoin, Stig took the lead on We Study Billionaires, conducting in-depth interviews with legendary investors.

He's interviewed Howard Marks, Mohnish Pabrai, Guy Spier, Tobias Carlisle, and dozens of other investing heavyweights. He also co-authored books with Preston on Buffett's investment methods.

Charlie Munger

Munger's main stage was Berkshire Hathaway, where he served as Vice Chairman from 1978 until he died. His role was hard to define on paper — he didn't run a fund or manage a portfolio.

What he actually did was talk to Buffett. That was worth a trillion dollars.

Before Berkshire, he ran his own investment partnership from 1962 to 1975 that crushed the market. He also controlled Wesco Financial, a small insurance and financial company he ran as a personal Berkshire subsidiary from 1973 to 2011, until Berkshire fully absorbed it.

Outside finance, he was obsessed with architecture — he personally designed several buildings, including the graduate residence he funded at the University of Michigan. His proposed Munger Hall at UC Santa Barbara went the other way.

It gave 94% of its bedrooms no windows, an architect on the review committee resigned in protest in 2021, and the project was eventually abandoned.

Stig Brodersen

The Investor's Podcast Network — co-founded with Preston Pysh, one of the largest financial media networks in the world. We Study Billionaires — the flagship podcast, now primarily hosted by Stig.

He co-authored books on Warren Buffett's investment frameworks with Preston Pysh. He also runs his own investment portfolio following value investing principles.

Charlie Munger

University of Michigan, mathematics — left for World War II without graduating. US Army Air Corps, meteorology training.

Harvard Law School, JD 1948 — admitted without an undergraduate degree, which Harvard is apparently capable of when it wants to be.

Stig Brodersen

Stig earned an MBA with a focus on finance and business. His academic background in business gives him a structured analytical framework for evaluating companies.

He's also self-educated through hundreds of investing books that he's read and discussed on the podcast — the show itself has been his ongoing graduate education in investing.