The Rational Walk publishes content on investing, personal finance, books, and philosophy. The Berkshire Hathaway Resource page contains useful information for investors. Readers can receive new articles via email by signing up for a subscription. Recent articles appear below.

In 1955, Charlie Munger's nine year old son died of leukemia, a disease with a nearly 100% death rate at the time. How did he overcome his grief and endure in life?
/ Philosophy
Berkshire countersues Pilot's founders, Meta targeting teens, Title Insurance, Moats & capital allocation, CAVA's origin, VISA's history, Business lessons from Tom Murphy
/ The Digest
Remembering Charlie Munger
/ The Digest
A life well lived
/ Berkshire Hathaway
For the second year in a row, Warren Buffett has made gifts to four family foundations in excess of the annual commitments pledged in 2006.
/ Berkshire Hathaway
Found Money, OpenAI drama, GLP-1 drug studies, Estée Lauder, Heart valve technology, Edwin Land, John Oliver skewers dollar stores, Apple regrets, The Great Books Journal
/ The Digest
Pseudonyms on social media, Superinvestor portfolios, Apple Vision Pro, Gates on AI, 40% discount rates, Evolving moats, Jay Gould, Garry Tan, Milton Friedman, Ayn Rand, Steve Ells
/ The Digest
A few observations based on recent 13F filings, with a focus on Berkshire Hathaway, Dollar General, Markel, and Semper Augustus.
/ Investing, Premium Content
The majority of people never find their "life's work", yet the premise of paying hundreds of thousands of dollars for a college degree assumes that they will.
/ Journal
Working Hard, Berkshire Q3 Recap, ProPublica attacks Buffett, Chipotle's international ambitions, The AI Gold Rush, 100th anniversary of Hitler's beer hall putsch, The Federalist Papers
/ The Digest
A review of Berkshire's large collection of non-insurance operating businesses, with a focus on results in Q3 2023 as well as a longer term view.
/ Berkshire Hathaway, Premium Content
Berkshire's Q3 earnings, Munger on retailing, SBF's strange philosophy, Rob Henderson on reading, Howard Marks on a full return world, Morgan Housel on writing that sells, Cities on Mars
/ The Digest
Berkshire Hathaway's auto insurer has returned to consistent profitability in 2023 but at the price of ceding market share that will be costly to regain in the future.
/ Berkshire Hathaway, Premium Content
Berkshire's longstanding aversion to fixed-maturity investments has not changed in response to higher interest rates.
/ Berkshire Hathaway, Premium Content
A high level overview of third quarter results and year-to-date repurchase activity.
/ Berkshire Hathaway
Pilot's Founders vs. Berkshire, I Bonds, Ted Weschler interview transcript, Expanding circles of competence, Damodaran on Tesla, Thompson on AI, Charlie Munger, Chris Davis
/ The Digest
Warren Buffett's reputation as a straight shooter is called into question by the Haslam family in a dispute over the valuation of their remaining 20% interest.
/ Berkshire Hathaway, Premium Content
American Prometheus, Buffett buys more OXY, Share repurchases, Lessons from Todd Combs, The nature of risk, Damodaran on markets, Keynes on the Treaty of Versailles, Attia on longevity
/ The Digest
Berkshire spent $246.4 million to acquire 3.9 million OXY shares between October 23 and October 25.
/ Berkshire Hathaway, Premium Content
The tragic story of J. Robert Oppenheimer encompasses far more than science and politics. It is a cautionary tale of human nature that holds timeless lessons.
/ Books
The Precautionary Principle, GEICO Layoffs, Superlinear Returns, TIPS for Retirement, Rockefeller's advice to his son, Impact of GLP-1 agonists, Tesla's IPO, Conference call transcripts
/ The Digest
Apple Watch, Musical Chairs at Dollar General, IPOs, Impact Investing, Buffett in 1988, Mapping the human brain, Interviews of Nassim Taleb, Jensen Huang, John and Patrick Collison, and more ...
/ The Digest
Investors were euphoric when Dollar General brought back its former CEO less than a year after his retirement. A sober look at the situation reveals significant concerns.
/ Investing, Premium Content
A company that is in the process of selling shares to the public for the first time must navigate a minefield of competing interests.
/ Investing, Premium Content

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