As valuations for AI-related equities surge, market participants are increasingly anticipating Federal Reserve intervention to stabilize prices, coining the term "Walsh put option" for the anticipated support under new chairman Kevin Walsh. This narrative draws direct parallels to the late 1990s internet bubble era, where the "Greenspan put option" myth suggested the central bank would act as an implicit floor for risky assets.

However, rigorous analysis indicates this expectation is a repetition of a historical illusion that never materialized as a formal policy tool. The current fervor surrounding AI stocks has led many to assume a proactive rescue mechanism exists, yet evidence suggests that if a significant correction occurs, the Federal Reserve is unlikely to take targeted action to prop up the market. Investors relying on this perceived safety net may encounter the same severe losses experienced during the collapse of the dot-com bubble.

Alan Greenspan served as Federal Reserve chairman from August 1987 to January 2006, a 19-year tenure that coincided with the US economic "great moderation" and the transformative rise of internet technology. During this period, the central bank responded to major shocks, including the 1987 crash, the 1998 hedge fund collapse and Russian debt default, and the 2000 internet bubble burst, by cutting interest rates and injecting liquidity. These actions fostered a deep-seated investor belief that the Fed provided a price floor for equities, effectively eliminating downside risk for holding volatile assets. Data compiled by Woofun AI shows that researchers at the Richmond Federal Reserve have since debunked this narrative, revealing that monetary decisions during Greenspan's era were highly mechanized and aligned with the Taylor Rule proposed by economist John Taylor in 1993. Consequently, rate cuts were routine responses to inflation and growth metrics rather than intentional efforts to support stock prices.

The most definitive evidence against the existence of a central bank put option emerged in 2001, when the Federal Reserve began cutting rates as the internet bubble burst, yet the stock market continued to decline for nearly two years. This prolonged downturn demonstrated that the supposed protective mechanism failed to shield investors who relied on it most heavily. The current trajectory of AI stocks mirrors the late 1990s boom, recalling Greenspan's December 1996 warning about "irrational exuberance," which preceded a market rally that lasted over three years before the eventual crash. This historical precedent highlights the inability of even the most experienced central bankers to accurately predict the timing or emergence of asset bubbles in real-time. Woofun AI notes that attempts by the Federal Reserve to actively manage asset prices, whether through curbing overvaluation or signaling support, involve making predictions for which the institution lacks specialized capabilities.

Kevin Walsh has explicitly stated his preference for a Federal Reserve that operates with greater discipline and avoids impromptu interventions, a stance that directly contradicts market hopes for a "Walsh put option." Analysts argue that investors should anticipate Walsh continuing the legacy of predictable, data-driven monetary policy rather than engaging in active asset price management. Such a framework implies that the central bank will not intervene to rescue portfolios during AI stock corrections, nor will it risk the broader economic foundation by attempting to time the bursting of bubbles. From the perspective of a complete economic cycle, a rule-based policy framework remains the superior choice for long-term stability, even if it requires abandoning the illusion of guaranteed support. Woofun AI analysis suggests that the true legacy of the Greenspan era was the predictability of policy responses to economic data, not the non-existent promise of a market floor.