The Market Cycle Puzzle

Preface: Explaining our market timing models

We maintain several market timing models, each with differing time horizons. The “Ultimate Market Timing Model” is a long-term market timing model based on the research outlined in our post, Building the ultimate market timing model. This model tends to generate only a handful of signals each decade.

 

The Trend Asset Allocation Model is an asset allocation model that applies trend-following principles based on the inputs of global stock and commodity prices. This model has a
shorter time horizon and tends to turn over about 4-6 times a year. The performance and full details of a model portfolio based on the out-of-sample signals of the Trend Model can be found here.

 

 

My inner trader uses a trading model, which is a blend of price momentum (is the Trend Model becoming more bullish, or bearish?) and overbought/oversold extremes (don’t buy if the trend is overbought, and vice versa). Subscribers receive real-time alerts of model changes, and a hypothetical trading record of the email alerts is updated weekly here. The hypothetical trading record of the trading model of the real-time alerts that began in March 2016 is shown below.

 

 

The latest signals of each model are as follows:
  • Ultimate market timing model: Buy equities (Last changed from “sell” on 28-Jul-2023)
  • Trend Model signal: Bullish (Last changed from “bearish” on 27-Jun-2025)
  • Trading model: Neutral (Last changed from “bullish” on 26-Nov-2025)

Update schedule: I generally update model readings on my site on weekends. I am also on X/Twitter at @humblestudent and on BlueSky at
@humblestudent.bsky.social. Subscribers receive real-time alerts of
trading model changes, and a hypothetical trading record of those email
alerts is shown here.
 

Subscribers can access the latest signal in real time here.

 

 

Divergent Market Cycles

Two weekI highlighted the relative breakouts of gold prices compared to the S&P 500 and the 60/40 portfolio and argued that the breakouts represented a transition of paper to hard asset leadership. However, the last time the gold/paper asset cycle turned, it coincided with a bottoming in other market leadership factors, namely value/growth, small cap/large cap and international/U.S. stocks. This time, the turn in factor leadership isn’t evident.

 

 

What are the investment implications of the continuing divergence? Changes in market leadership often occur when a market transitions from bull to bear. Does this mean that the bull is still alive and how should investors position their portfolio allocation?
 

 

The Debasement Trade

The most likely explanation is to distinguish between increasing nervousness over the outlook for U.S. sovereign paper compared to the enthusiasm for dominant U.S. companies. The rise in the gold price is reflective of the so-called “debasement trade”. It just doesn’t reflect nervousness over the U.S. federal deficit, but deficits all around the world. Robin Brooks observed that bond yields and forward yield curves are steepening in the major developed market economies, not just the U.S., which is a signal of increasing fiscal dominance where central banks are forced to accommodate the rising fiscal deficits of their governments.
 

 

 

U.S. Corporate Dominance

By contrast, investor enthusiasm for dominant AI-related companies which are all based in the U.S. continue. If AI stocks are in a bubble, it’s only just starting. The forward P/E gap between the cap-weighted and equal-weighted S&P 500 really only started to diverge with the introduction of ChatGPT three years ago

 

 

Investors have seen this movie before. U.S. stocks dominated global stock performance after the GFC, and for the correct reasons. The dominant technology stocks were all based in the U.S., and the Apples, Googles and Amazons of the world.
 

Even though the capital expenditure rates of the hyperscalers look odd scale insane, valuations may not be totally out of line. Goldman Sachs argues that while the capex to sales rate (dark blue line) has risen to Dot-Com Bubble level highs, capex to free cash ratios (light blue line) are still reasonable.

 

 

 

The Value vs. Growth Dilemma

The dominance of U.S. megacap growth stocks brings up a valuation dilemma for equity investors. Sure, value stocks are trading at a large historical discount to growth stocks, but the earnings growth of the growth stock universe has outpaced value for the last four years.
 

 

A similar dilemma arises when investors consider the forward P/E ratios of major global regions. The U.S. equity forward P/E ratio is elevated on an absolute basis, but the earnings multiples of other regions are elevated relative to their own history as well.
 

 

 

How the Bubble Could Pop

Where does that leave us?

 

It’s unclear whether AI stocks are in an investment bubble, and investors won’t know until after the fact. My assessment is that they are in a bubble, but the bubble inflation is in early stages.

 

Here is a scenario of how the bubble may pop, but the process will not follow the conventional script of the Dot-Com era. A report by the conservative think tank Center for Security Policy will be the battleground for a new “cold war” between the U.S. and China. The report argues that Chinese dominance would mean the Chinese Communist Party would be able to dictate “global technology standards worldwide”. The Trump Administration, and previously the Biden Administration, recognized these risks and took steps to retard the progress of Chinese AI research.

 

I offer an out-of-the-box view of how AI competition may evolve. Tracy Alloway at Bloomberg observed that while the aim of U.S. policy is to dominate the platform and own the global technology standard in the same way that U.S. social media companies owned their standards, Chinese companies are pursuing a strategy of commoditizing AI: “Wall Street still out there valuing US AI like it’s a $5,000 espresso machine with a supposedly infinite potential market. Meanwhile China’s already been handing out free Nespresso pods to anyone who’ll have them. Which is interesting because it means China is effectively pursuing a commodification strategy for AI (and makes the real U.S.-China tech competition about power availability rather than model or data sophistication).”

 

The U.S. hyperscale arms race has been to build the best LLM platform using their own databases based on a “winner take all” business model. Many companies and government organizations don’t want their proprietary data residing in public platforms and they want AI solutions based on their own data. Small language model is sufficient for these applications and they don’t need the enormous computing resources of LLMs. Those data-light platforms are all currently Chinese, which supports Alloway’s commoditization thesis.

 

One day, investors may wake up and realize that the U.S. hyperscalers were fighting the wrong war. The value-added in the AI value chain belongs to the implementers who pursued the commoditization strategy.
 

If this thesis correct, the shift is only starting and the peak is still a few years away.

 

On the other hand, Time Magazine’s choice of the Architects of AI as its “Person of the Year” is a magazine cover contrarian indicator that the top is near.

 

 

In conclusion, investors should be aware of two separate and distinct long-term themes in the markets. First, the “debasement trade” will carry on and hard assets will continue to dominate in the next multi-year market cycle. The combination of fiscal dominance and acquiescent central banks is bullish for asset prices and the equity bull cycle isn’t over. However, investors shouldn’t depend on a rotation from growth to value, large cap to small cap, and U.S. to non-U.S. equities in the near future.

 

I reiterate my view that equity investors should diversify by holding a barbell portfolio of U.S. large-cap growth and international value stocks. AI is probably in a bubble, but the top may be further than anyone expects. As the accompanying chart shows, the top panel demonstrates the continued multi-year dominant trend of U.S. large-cap growth. The bottom panel shows that the relative performance of EAFE value stocks (dotted red line) have kept pace with the global index. If and when AI stocks falter, these stocks will provide outperformance, while investors get paid to wait for the break.

 

 

 

The Week Ahead: Waiting for Santa

Looking to the week ahead, the market last week was weaker than I expected, but it remains positioned for a rally into year-end. Contrary to the belief popularized by the financial press, Jeff Hirsch explained that the “Santa Claus Rally was devised by Yale Hirsch in 1972 and published in the 1973 Stock Trader’s Almanac. The ‘Santa Claus Rally’ is the last 5 trading days of the year plus the first 2 of New Year.” While the historical record of this seasonally positive period isn’t perfect, the stock market has risen 19 of the last 25 years.

 

 

Technical analyst Wayne Whaley argues that the traditional Christmas rally window is December 20 to January 6, which has an S&P 500 win-loss ratio of 57-18 and an average gain of 1.55%.

 

 

Regardless of what the actual rally window is, I am encouraged by evidence of broadening breadth and the recovery in AI-related stocks after last week’s fright. It’s the best of both worlds, the Magnificent Seven remains in a relative uptrend, and the equal-weighted S&P 500 is turning up. As well,  both the S&P 500 and NASDAQ 100 rallied to regain their 50 dma levels, which are constructive signs.

 

 

Last week’s weakness in AI stocks was likely just a hiccup. MarketWatch reported that Nomura derivatives strategist Charlie McElligott wrote that ““The AI phase shift into ‘adulthood’ has moved into ‘tumultuous’ territory in recent weeks, with the market transitioning away from the early CAPEX spend euphoria, and now, maturing into a much more rigorous
assessment of the investing theme.”

 

Happy trading.