Alan Greenspan, the Fed chair who defined an era of American finance, dies aged 100

Alan Greenspan, the Federal Reserve chairman whose tenure ran longer than those of any predecessor and whose every syllable was parsed by bond traders, sovereign-debt desks and emerging-market finance ministries for almost two decades, has died at 100. The central bank itself has not, at this writing, published a formal obituary, but the Fed's official biography describes a career that began in a one-room office above a luncheonette in New York and ended in the marble corridors of the Eccles Building, where he chaired the Federal Reserve Board from 1987 to 2006.

The biographical file at federalreserve.gov sketches the arc with bureaucratic restraint. Born in 1926 in New York City. Bachelor’s, master’s and doctorate in economics from New York University. A decade as chairman of the Council of Economic Advisers under Gerald Ford. A consultancy of his own making, Townsend-Greenspan & Co., serving chief executives whose own accounts he could later move with a single word in congressional testimony. Then 18 years at the apex of US monetary policy, the longest continuous chairmanship of the institution since its founding in 1913.

The era the chair defined

What Greenspan actually did, in the dense and often deliberately obscurantist language he favoured, was administer the United States through three of the most consequential economic regimes of the post-war era: the disinflation of the early 1990s, the productivity boom that followed, and the housing-and-credit super-cycle that ended, in late 2008, with the most serious financial fire since the 1930s. He cut rates with a decisiveness that startled markets, held them with a patience that frustrated politicians, and presided over a balance sheet that, by the time he left office, was larger in real terms than at any point in the institution’s prior nine decades.

His vocabulary became a market instrument. Words like “irrational exuberance,” delivered in a 1996 speech, were taken as a signal and triggered selling across Asia within hours. The phrase has aged into a cliché; at the time it was a reminder that the chairman’s office was, itself, a lever on the price of every financial asset on earth.

What the record won’t let us forget

Wire obituaries will lead with “architect of the modern economy,” and there is a case for that framing. Inflation came down. Growth held. The unemployment rate fell to levels that, in the 1970s, would have been treated as fantasy. But the same period saw household debt more than double relative to disposable income, derivatives markets metastasise into instruments that even their creators admitted they could not price, and a housing complex whose structural defects were visible, in retrospect, to anyone who bothered to look at the loan-level data. When that regime collapsed in September 2008, the Fed Greenspan had built did not have the legal authority to do what it then did: extend emergency lending to non-bank institutions, underwrite the takeover of Bear Stearns by JPMorgan Chase, and ultimately backstop money-market funds. The architecture it improvised became the template for everything that followed, from the eurozone crisis responses of 2012 to the pandemic-era facilities of 2020.

Greenspan himself, testifying before the House Committee on Oversight and Government Reform in October 2008, conceded that he had been “partially” wrong to assume that the self-interest of market participants would reliably protect their own counterparties. The admission, for a man who had made a career of trusting markets more than he trusted regulators, was as close to a recantation as one is likely to hear from a former central banker.

Why the chairmanship still matters

Twenty years on, the institution Greenspan left is being pulled in opposite directions by a White House that wants lower rates, a bank-supervision regime that has just been stress-tested against a $708 billion loss scenario, and a current chair whose appointment was itself a market event. The Federal Reserve’s annual stress-test results, released in late June, confirmed that the largest US banks could absorb losses on that scale while remaining above their minimum capital requirements. The number matters because it is the explicit answer to a question Greenspan’s tenure made inescapable: how much damage can the system absorb before taxpayers are back on the hook.

Greenspan believed, in the phrase that became associated with him, that the central bank should not try to prick bubbles it could not reliably identify, and should not regulate products it did not understand. That worldview has been discredited in its strong form. It survives, in weaker versions, in every modern argument about whether the Fed should look through asset-price inflation to focus on consumer prices alone, and whether the right response to a leveraged credit boom is tighter policy or better supervision. The debate Greenspan shaped is the one his successors still have.

What the obituary can’t settle

The clean version of the Greenspan story says he brought inflation down without breaking the economy, and that this was a triumph of craft. The structural version says the same policies that delivered low consumer-price inflation also delivered a financial system that, by 2007, had concentrated risk in ways no model had priced, and that the response to that breakdown required the Fed to break its own conventions of what a central bank does. Both readings are consistent with the same set of facts. The question of which one should govern the eulogy is, in the end, a question about what one thinks the central bank is for.

Greenspan lived long enough to see his legacy fought over in real time. He will be remembered, variously, as the man who broke the back of inflation and as the man who sat at the head of the table when the bill came due. The Fed he ran is still answering that bill.