Greenspan's Ghost and Walsh's Choice: The 'Master's' Replication Path of the New Fed Chair

In June 2026, the Federal Reserve welcomed a new, controversial, and anticipated chair—Kevin Walsh. Just before he officially took the helm, Alan Greenspan, one of the most influential Fed chairs in history, passed away at 100. This historical coincidence cast a meaningful note on Walsh's policy blueprint. In his inaugural speech, Walsh frequently invoked Greenspan's ideas, clearly setting him as a benchmark. In his first press conference, he positioned himself as a successor of 'data-driven', 'strategic ambiguity', and 'supply-side thinking'. To the market, this was a promise to rekindle the 'Greenspan boom'—low inflation, high growth, strong employment, and a long bull market. However, Greenspan's legacy was not one-sided; low rates bred asset bubbles, the market's illusion of the Fed's 'put' on stocks, and the macro blind spots exposed by the global financial crisis are all unavoidable reefs for Walsh. This article deeply analyzes how Walsh seeks to replicate the monetary policy paradigm of the Greenspan era and explores whether he can break the market's 'put illusion' while creating growth miracles, heading toward a more prudent balanced path.

Return of 'Strategic Ambiguity': Walsh Actively Emulates Greenspan

Greenspan led the Fed for nearly two decades (1987-2006), navigating major market storms including the 1987 crash, the 1994 Mexican peso crisis, the 1998 collapse of Long-Term Capital Management, and the 2000 dot-com bubble burst. With flexible and sharp policy maneuvers, he earned the title 'Maestro', overseeing above-trend growth, strong employment, and price stability. Crucially, Greenspan never issued detailed long-term forward guidance, deliberately keeping the market guessing—this signature 'strategic ambiguity' is exactly what Walsh intends to emulate.

At the press conference after the June 17 policy meeting, Walsh's actions directly interpreted this stance. The Fed statement included no forward guidance, and Walsh himself refused to fill in the 'dot plot' of officials' quarterly rate projections, explicitly stating he wanted the market to react directly to economic data, not to rely on filtering and predictions from Fed governors. This completely overturned the transparency paradigm of 'full communication and expectation management' under his predecessor Powell. Walsh told the market: 'You don't need me to predict the future; you need to interpret the data yourselves.'

In terms of rule orientation, Greenspan used real-time market prices such as industrial and agricultural commodity prices, the yield curve, the dollar exchange rate, and gold prices as policy anchors. Walsh has consistently advocated for more rule-based and less discretionary policy, and is expected to adopt a similar framework to some extent. This seemingly 'conservative' stance is actually a trust in market free will and a strategy to partially transfer decision-making burden to the market. The market no longer relies on official 'dot plots' to predict rate paths but returns to independent judgment of economic fundamentals.

Data-Driven and Supply-Side Thinking: High Philosophical Alignment

Greenspan was a pioneer of data-driven decision making at the Fed. As an early economic advisor, he established a tradition of referencing a wide range of multi-dimensional data, and Walsh emphasized the same philosophy: decisions should not rely on fixed rules but on the broadest set of real-time economic indicators.

However, it is their high agreement on the 'Phillips curve' that truly reveals the deep philosophical alignment. In the latter half of the 1990s, Greenspan repeatedly argued that structural changes like productivity improvements had rendered the theory obsolete—falling unemployment does not necessarily lead to runaway inflation, because supply-side expansion can simultaneously lower costs and prices. At the June press conference, Walsh explicitly rejected the notion of a 'cruel trade-off' between employment and inflation, emphasizing that appropriate monetary policy can allow low unemployment and solid growth to coexist without necessarily triggering inflation. This stance is consistent with Greenspan's supply-side logic.

Productivity is the core pillar of the above policy framework. In Q1 2026, U.S. productivity growth (annualized) rose to 2.8%, significantly above the post-financial crisis long-term average of about 1.4%, reminiscent of the late 1990s when tech-driven productivity consistently exceeded 2.5%. If this trend persists, it will provide a solid economic foundation for Walsh's goal of achieving 'low inflation, high growth, and low unemployment' simultaneously. Historical experience shows that strong productivity gains often go hand-in-hand with substantial stock market returns—during the Greenspan era, the S&P 500 rose 290%.

The Ideological Blind Spot: The Other Side of Greenspan's Legacy

Greenspan's failures are also unavoidable. His almost faith-based adherence to free markets created blind spots even in data attention—his mastery of firm-level micro data obscured a more rigorous analysis of the macroeconomy and hindered full recognition of unstable credit conditions and accumulated financial imbalances.

The consequences were obvious: low rates fueled cheap credit, ultimately breeding large bubbles during the global financial crisis. Global imbalances also drove the industrial shock of the early 2000s, severely damaging overall U.S. manufacturing. The Financial Times warned Walsh that if he reverts to last year's dovish stance, he must extend his risk horizon for expansionary policies beyond inflation. 'He should not adopt dogmatic positions on market issues, nor should he be seduced by the 'golden calf' of Wall Street and Silicon Valley.'

This means that simply replicating Greenspan's data-driven approach and strategic ambiguity does not guarantee Walsh's success. On the contrary, if Walsh fails to learn from Greenspan's lessons in macro balance, his pursued 'supply-side boom' could easily evolve into new asset bubbles, laying the groundwork for even larger systemic risks.

'Greenspan Put': The Most Troublesome Legacy

Perhaps the most complex legacy of the Greenspan era is the so-called 'Greenspan put'—a long-standing market expectation that the Fed will support U.S. stocks. This perception has persisted in various forms after Greenspan, and even if the Fed chair does not hold this position, it can lead to dangerous consequences.

In the Walsh era, market sentiment is already exuberant. Allowing this 'put illusion' to persist will further encourage excessive risk-taking. Investors may believe that regardless of economic data, the Fed will intervene when stocks fall sharply, thereby compressing risk premiums and inflating valuation bubbles. The Financial Times advised Walsh to eliminate this expectation early: this does not mean ignoring stock market reactions, but rather striving to dispel the market's belief that the Fed treats stock levels as a policy target.

'Greenspan verbally championed free-market ideals, but the new Fed chair must show commitment to Greenspan's words, not his actions.' For Walsh, the most worthy legacy of Greenspan is data-driven flexible decision-making and resistance to dogma; the aspect to most deliberately avoid is precisely treating stock market levels as a policy goal. One unambiguous signal is: the Fed will not cut rates because the S&P 500 falls 10%, nor will it raise rates because the Nasdaq hits new highs.

Conclusion

The curtain has just risen on the Walsh era, but history has already set two distinct tracks for his policy path. One is Greenspan's success—data-driven, supply-side thinking, and strategic ambiguity that created nearly two decades of 'low inflation, high growth, low unemployment' miracle, with rich capital market returns. The other is Greenspan's failure—low rates breeding asset bubbles, free-market faith obscuring macro balance, ultimately leading to the global financial crisis that severely damaged the real economy.

Can Walsh replicate the glory and avoid failure? The key lies in whether he is willing to do two seemingly contradictory things: on one hand, adhere to supply-side thinking and productivity-driven structural prosperity; on the other, decisively break the illusion of the Fed's 'put' on stocks, actively sending signals when risk asset prices are too high, and even taking preventive tightening. This means Walsh cannot merely be a 'mirror image of Greenspan'; he must be a 'corrected Greenspan' who is more alert and forward-looking.

The market is waiting for Walsh to provide an answer. The real test may not be whether he can keep stocks rising, but whether he has the courage to break the bubble as it inflates. After all, a true 'maestro' not only knows how to create prosperity in good times but also how to maintain stability in adversity. Walsh's journey has only just begun.