Partnership with Warren Buffett

Munger's most enduring legacy is his six-decade partnership with Warren Buffett. While Buffett initially focused on buying "cigar-butt" stocks (cheap, troubled companies with a final puff of value), Munger is credited with persuading Buffett to shift to a philosophy of buying wonderful businesses at a fair price, rather than fair businesses at a wonderful price. This change was foundational to building Berkshire Hathaway into the global powerhouse it is today.

Investment Philosophy and Wisdom

Munger was not just an investor; he was a philosopher and deep thinker whose wisdom extended far beyond finance. His core principles include:

• Buying Quality Businesses: His primary tenet was to invest in companies with a wide, durable economic moat—a competitive advantage that protects long-term profits.

• Concentrated Investing: He preferred a concentrated portfolio, believing that great investment opportunities are rare. He famously said, "The idea that you have to have 50 stocks is crazy. Very few people have gotten rich on their seventh-best idea."

• Patience and Long-Term Focus: Munger was a fierce advocate of a buy-and-hold strategy, emphasizing the power of compounding. He stated, "The big money is not in the buying and the selling, but in the waiting."

• The Latticework of Mental Models: Munger's most famous intellectual contribution is the concept of a "latticework of mental models." This approach involves drawing on key principles from multiple disciplines—including psychology, history, physics, and economics—to make better, more rational decisions in business and life.

• Inversion (Avoiding Stupidity): He often used the principle of inversion, advising people to think backward by focusing on what they should avoid (how to fail) to increase their chances of success. He noted that much of their success came from "trying to be consistently not stupid, instead of trying to be very intelligent."

Other Ventures and Legacy

In addition to his role at Berkshire Hathaway, Munger was known for his involvement in other companies, including serving as the Chairman of the Daily Journal Corporation and as a director of Costco Wholesale Corporation.

At the time of his death in November 2023 at the age of 99, Munger's estimated net worth was approximately $2.7 billion. He was also an active philanthropist, focusing significant donations on education.

Charlie Munger – The Man Who Built Berkshire Hathaway | A Documentary offers a look into the life and impact of Charlie Munger, the man instrumental to Berkshire Hathaway's success.