Berkshire Hathaway has completed one of the most closely watched leadership transitions in corporate history.
On September 18, Warren Buffett stepped down as chairman and became chairman emeritus, effective immediately.
He remains a Berkshire director.
His son, Howard G. Buffett, became chairman.
Greg Abel remains chief executive officer and continues to run the company.
That division of responsibility is the most important point for shareholders.
Howard Buffett is not replacing Greg Abel as the operating leader.
The chairmanship is primarily a governance and cultural role.
Abel remains responsible for Berkshire’s businesses and capital allocation.
The New Leadership Structure
Berkshire now has three clearly defined senior roles.
Greg Abel: CEO. He runs the company.
Howard Buffett: chairman. He leads the board in a non-executive capacity and is expected to help preserve Berkshire’s culture and governance model.
Warren Buffett: chairman emeritus and director. He no longer holds the formal chairmanship but remains on the board.
Susan Decker continues as lead independent director.
The structure reflects a succession plan Berkshire has discussed for years.
Why Howard Buffett Became Chairman
Howard Buffett has served on Berkshire’s board since 1993.
He is not being positioned as the company’s day-to-day manager.
Warren Buffett has repeatedly described the chair’s future role as one of protecting Berkshire’s culture and values.
That matters because Berkshire’s unusual structure depends heavily on decentralization, trust in subsidiary managers and long-term capital allocation.
The board’s job is partly to preserve that system even as the operating leadership changes.
Greg Abel Is the Person Running Berkshire
For investors asking “Who runs Berkshire now?”, the answer is Greg Abel.
He became CEO earlier in 2026 after years of overseeing Berkshire’s non-insurance operations.
Since taking over, Abel has already begun making large capital decisions.
Reuters reported that Berkshire recently committed about $16.8 billion over two days to acquire Taylor Morrison and expand its Alphabet stake.
Those moves suggest the company is not simply sitting on its cash while waiting for Warren Buffett.
Abel is using the balance sheet.
Berkshire’s $364.7 Billion Cash Pile Is the Biggest Strategic Question
Berkshire ended June with about $364.7 billion in cash, near a record level.
That cash creates enormous optionality.
It also creates pressure.
When Treasury yields are high, cash earns meaningful income.
But shareholders ultimately expect Berkshire to find attractive businesses, stocks or repurchases that can produce higher long-term returns.
The transition therefore places a spotlight on Abel’s capital-allocation discipline.
A few large deals will not define the new era.
The pattern of decisions over several years will.
What Changes for the Stock
Warren Buffett’s formal departure from the chairmanship was widely expected.
That reduces the likelihood of a purely mechanical shock.
Berkshire shares rose modestly on Friday.
The more important question is whether investors continue to assign any special valuation premium to the company because of Buffett’s historical presence and reputation.
Through Thursday, Berkshire shares had lagged the S&P 500 by roughly 11 percentage points in 2026, according to Reuters.
The stock was trading around 1.5 times trailing book value.
Those figures suggest the market had already begun treating Berkshire more like a large diversified financial-industrial company and less like a personal investment vehicle run by Buffett.
The Insurance Business Still Matters Enormously
Berkshire is not only an investment portfolio.
Its insurance operations generate float that can be invested.
GEICO, reinsurance and other insurance businesses remain central to the company’s financial model.
Ajit Jain continues to oversee insurance operations.
For investors, the new leadership era should therefore be judged on both operating-company performance and investment returns.
The equity portfolio alone is not enough.
What Does Not Change
Berkshire still owns a collection of major businesses across insurance, railroads, energy, manufacturing, retail and services.
It still holds large public-equity positions.
It still has an unusually conservative balance sheet.
And Warren Buffett remains a director.
The formal title change does not instantly alter the economics of those businesses.
What changes is the identity of the people with final authority over future decisions.
The Main Risk: Culture Is Hard to Institutionalize
Berkshire’s historical advantage has depended partly on behavior that is difficult to encode into policy manuals.
Managers have had unusual autonomy.
The parent company has maintained low overhead.
Acquisitions have often been negotiated quickly.
Capital has moved across subsidiaries with relatively little bureaucracy.
Howard Buffett’s role is partly designed to protect that culture.
The challenge is whether a system associated so closely with one individual can remain equally effective after leadership becomes more institutional.
Why Book Value Still Matters
Berkshire is increasingly judged on operating earnings and cash generation, but book value remains a useful reference because it captures accumulated capital across the group.
Investors should avoid using a single historical multiple mechanically.
Still, changes in price-to-book can help show whether the market is assigning a premium to future capital allocation under the new leadership team.
The Bull Case
The positive case is that succession actually improves clarity.
Abel can operate without investors constantly asking what Buffett would do.
Howard can focus on governance and culture.
Berkshire’s cash can be deployed more actively.
The businesses continue generating cash.
In that scenario, the transition becomes a source of stability rather than disruption.
The Risk Case
The risk is not that Berkshire suddenly changes overnight.
It is that capital allocation gradually becomes less distinctive.
Large acquisitions can destroy value if pricing discipline weakens.
A huge cash balance can become a drag if attractive opportunities are scarce.
The board also has to preserve Berkshire’s decentralized culture as the organization grows.
Those are long-term risks, not one-quarter problems.
What to Watch Next
Watch how Greg Abel uses Berkshire’s cash.
Watch future acquisitions and share repurchases.
Watch changes in the public-equity portfolio.
September 30 marks the end of the third quarter, and mid-November filings will provide another window into Berkshire’s portfolio activity.
Also watch whether the company changes governance, disclosure or capital-allocation practices under the new structure.
The central question is:
Can Berkshire preserve the discipline and culture that made it exceptional while becoming a company led by institutions and processes rather than one dominant investor?
The succession is now official. The test begins with execution.