Dirk Willer, Head of Global Macro, Asset Allocation and Emerging Markets Strategy at Citi, joined Meb Faber on The Meb Faber Show1 to deliver one of the more intellectually honest macro frameworks to emerge from the current bull market debate. His message is as provocative as it is disciplined: the market is in a bubble, and that is precisely why you buy it.
How Citi Defines a Bubble
Willer and his quantitative team rely on a price-based definition borrowed from GMO: when an asset rises more than two standard deviations above its long-term real trend, it qualifies as a bubble. The definition is deliberate in its scope. "Bubbles can show up in earnings too," Willer notes, pointing to the kind of gross-margin expansion among high-growth names that cannot persist indefinitely. Valuation-based measures, including the Shiller CAPE, confirm the same conclusion. By either standard, Willer says, "we entered bubble territory roughly middle of last year."
Crucially, for Willer this is not a bearish signal. "You tell it's a bubble, but you buy it," he explains. The defining characteristic of a bubble, in his framework, is not that it ends badly, which it will, but that it gives you meaningful gains before it does. The strategy, then, is to participate while managing downside risk: avoid excess leverage, carry some hedges, and stay clear-eyed about the eventual reckoning.
The Scale of What Is at Stake
Willer provides a historical anchor that stops short of being alarmist but demands serious attention. In 2000, U.S. equity market capitalization sat at roughly 100 percent of GDP. The resulting bust produced a recession, shallow but real. Today that figure stands at 240 percent of GDP. The arithmetic is straightforward: "You can expect a bigger recession and the Fed will react to that." Rates could return to zero. The Fed would likely need to purchase long-duration Treasuries. Gold, in that scenario, "will go straight up."
Reading the Warsh Fed
Willer and his team have constructed what they call the Warsh Shadow Rate, a z-score composite of every economic indicator Fed Chair Kevin Warsh has publicly cited as consequential. The rate tracks Fed funds with striking fidelity, particularly under the Greenspan regime that Warsh openly admires. Right now, the shadow rate is at the highs. "We think that means he's hawkish," Willer says. The Fed has hiked once in the current cycle. That is not yet a problem. "The first Fed hike is usually not a problem," Willer observes. "The last Fed hike is a problem." The implication for positioning: stay patient on bonds, and do not mistake a single hike for the end of a cycle.
When the Generals Break
Willer's proprietary bubble-timing tool, which he calls the Generals Indicator, tracks the top seven names in the S&P 500 by market capitalization at the start of each year. The tactical signal is direct: when four of the seven break below their 200-day moving averages, the portfolio exits. "That saves you a lot of money in these bubbles," he says, "and gives you quicker exit than when you wait for the S&P to break down." Breadth narrowing is, in his words, "a feature, not a bug" of a bubble market. The concentration is the tell.
Bonds, Gold, and Where to Look Now
On fixed income, Willer is patient rather than bearish. Real yields on 30-year Treasuries now exceed three percent. For a sufficiently long-term investor who believes the equity bubble will eventually burst, that is a meaningful offer. "When you really, really need Treasuries in your portfolio, they will work," he says, "because in the next deflationary bust, they will help you." That deflationary shock could come from the bubble itself, or from AI displacing labor at scale.
Gold, meanwhile, has structural support from global central bank reserve diversification, particularly among sovereigns seeking alternatives to dollar holdings. The short-term headwind is rate-cycle sensitivity. "If you just trade gold in line with 2-year rates in the US, that is all you need," Willer says. The bigger-picture thesis remains intact but requires patience.
5 Key Takeaways for Advisors and Investors
- Bubbles are tradeable. Identifying a bubble is not a sell signal. It is a risk-management signal. The discipline is staying invested while sizing positions conservatively and maintaining portfolio hedges against the eventual unwind.
- The Generals Indicator is worth watching. When the market's leadership names break below their 200-day moving averages in sufficient numbers, the bubble may be peaking. That signal is likely to arrive before fundamentals deteriorate, giving active managers an earlier exit.
- Bond timing depends on the Fed's last move, not its first. The rule of thumb is to buy bonds when one hike remains, not when hiking begins. Given the Warsh Fed's hawkish bias, the entry point for fixed income has not yet arrived.
- Gold is a long-game reserve asset. Short-term, gold trades with U.S. 2-year rates. Long-term, central bank reserve diversification away from the dollar provides a structural floor. The catalyst to own it aggressively is the next deflationary bust, not the current inflationary cycle.
- Equity market cap at 240 percent of GDP sets the stakes. The coming recession, when the bubble does burst, is expected to be larger than 2000. Advisors should ensure client portfolios carry sufficient duration assets and defensive exposure to weather an episode that will likely require the Fed to take rates back to zero.
Footnote:
1 Faber, Meb, host. "Dirk Willer on Why You Buy the Bubble." The Meb Faber Show, Cambria Investment Management, 29 Oct. 2026, www.themebfabershow.com/episodes/IolfhD72TeV.
