Innovation & Wealth › Mass production & the consumer age › Postwar boom and the rise of the middle class
Warren Buffett and Berkshire Hathaway
b. 1930; took control of Berkshire 1965· Innovator or entrepreneur· Innovators & entrepreneurs
Well documentedSolid records, texts or physical evidence.
An Omaha investor who turned a failing textile mill, Berkshire Hathaway, into a giant holding company over six decades.
See it on the Innovation & Wealth map →What happened
Buffett, born in Omaha in 1930, learned 'value investing' from Benjamin Graham: buy businesses for less than they are worth. In 1965 he took over Berkshire Hathaway, a failing New England textile mill, and made it a holding company. Insurance premiums held before claims are paid, called 'float,' funded purchases of GEICO, See's Candies, Coca-Cola stock, the BNSF railroad and Apple shares. Berkshire stock compounded about 20% a year from 1965 to 2024.
Impact on society and the economy
He showed that patient ownership of durable businesses could beat the market for decades. His fortune, over $150 billion at its 2025 peak (estimates vary), is pledged almost entirely to charity.
Fortune, legacy and how we know
Berkshire's annual shareholder letters, which report its returns against the S&P 500; Alice Schroeder's biography The Snowball (2008); Forbes and Bloomberg wealth estimates. Greg Abel succeeded him as CEO in January 2026.
Still debated
Whether Berkshire can keep beating the market without Buffett, and at its huge size, is open; its lead over the index has narrowed since the 2000s.
Inside this (1)
Connections (3)
▸Warren Buffett and Berkshire Hathaway championed John Bogle's index fundWell documented
The connection
Though one of history's best stock pickers, Buffett told ordinary investors to buy low-cost S&P 500 index funds like Bogle's. In 2007 he bet $1 million that an index fund would beat a set of hedge funds over ten years, and won. His will tells the trustee of his wife's inheritance to put 90% in one.
When and how
Berkshire shareholder letters from the 1990s onward; the bet with Protégé Partners ran 2008–2017; Buffett praised Bogle by name at Berkshire's 2017 annual meeting in Omaha.
How we know
Buffett's letters are public: the 2013 letter gives the 90% instruction, and the 2016 letter says Bogle deserves a statue for helping American investors.
Debates
Critics note the irony that Buffett's own record argues for stock picking; he replies that few professionals beat the market after fees, and those few are hard to identify in advance.
▸Warren Buffett and Berkshire Hathaway co-founded the Giving Pledge amid The billionaire boom and the inequality debateWell documented
The connection
In 2010 Buffett and Bill and Melinda French Gates launched the Giving Pledge, asking billionaires to give away at least half their wealth. Buffett has given over $60 billion, mostly to the Gates Foundation, and argues the rich are undertaxed: in 2011 he wrote that his tax rate was lower than anyone else's in his office, inspiring the 'Buffett Rule.'
When and how
Announced in the US in 2010 with about 40 initial signers; by 2025 over 250 people from more than 30 countries had signed.
How we know
The pledge letters are public on its website; Buffett's gifts are recorded in Berkshire Hathaway share-transfer announcements and foundation filings.
Debates
Pledges are not binding; a 2024 Institute for Policy Studies report found the living original signers' wealth grew far faster than their giving.
▸Andrew Carnegie anticipated the Giving Pledge of Warren Buffett and Berkshire HathawayMostly agreed
The connection
Carnegie's 1889 'Gospel of Wealth' argued the rich should give away their fortunes during life, warning that 'the man who dies thus rich dies disgraced.' In 2010 Buffett, with Bill and Melinda Gates, launched the Giving Pledge, asking billionaires to give most of their wealth to charity, an idea commentators widely trace to Carnegie.
When and how
Pittsburgh and New York, 1889 (Carnegie's essay in the North American Review); Omaha and Seattle, 2010 (the Giving Pledge).
How sure are we?
Both texts are public and closely parallel; commentators routinely link them, but the Pledge is better seen as a revival of Carnegie's idea than a documented direct descendant.
Debates
Critics ask whether billionaire giving, then and now, serves the public or donors' own priorities and tax interests; many pledgers' fortunes have grown faster than their giving.