Warren Buffett resigned as chairman of Berkshire Hathaway on September 18, 2026, ending a six-decade run that transformed a failing textile mill into a $1.0 trillion conglomerate holding everything from railroads to insurance to energy infrastructure. His son Howard Buffett, 71, a farmer and Berkshire board member since 1993, takes the chairman role immediately. Greg Abel, 64, remains CEO and principal capital allocator. The elder Buffett, now 96, cited no health concerns in the brief internal memo but invoked inevitability: "Father Time always wins."

The succession follows the blueprint Buffett telegraphed in shareholder letters for two decades. Howard Buffett becomes non-executive chairman, tasked with culture preservation and board governance. Greg Abel controls $167 billion in cash and short-term Treasuries, directs acquisitions, and oversees operating subsidiaries generating $364 billion in annual revenue. Ajit Jain, 75, continues running the insurance operations that supply Berkshire's float. The structure separates family stewardship from operational execution, a model Buffett described in 2018 as necessary to prevent «a future board from drifting toward quarterly thinking or private-equity style financial engineering.

The announcement arrives with Berkshire trading at 1.6x book value, near the high end of its five-year range, and the cash pile at an all-time peak. The company repurchased $2.9 billion of stock in Q2 2026, the slowest pace since 2019, signaling valuation discipline even as the S&P 500 hovers 340 points below its July record. Berkshire holds $189 billion in equity securities, with Apple still comprising 42% of that portfolio despite partial sales over the past eighteen months. The Oracle of Omaha's final act as chairman was approving a $14 billion utility infrastructure spend across BHE's Western grid, the largest single-year capital commitment in that subsidiary's history.

Allocators should watch three items over the next eighteen months. First, whether Abel deploys a meaningful portion of the cash hoard into a large acquisition—Buffett's departure removes the psychological anchor of his approval, and Abel has historically favored energy and industrial assets over consumer brands. Second, how Howard Buffett handles board composition as three directors approach mandatory retirement age in 2027; any shift toward younger, tech-fluent members would signal openness to non-traditional sectors. Third, whether the conglomerate discount narrows or widens—Berkshire has traded 180 to 240 basis points below sum-of-the-parts for the past decade, and some analysts believe Greg Abel's operational transparency could close that gap by mid-2028.

The transition was orderly because it was inevitable. Buffett spent sixty years building an institution designed to outlast him, and the capital-allocation track record suggests he succeeded. What remains untested is whether Berkshire's culture of patience survives contact with a generation of investors who never knew a market without Warren Buffett in it.