60/40 in an era of American Unexceptionalism

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: Bearish (Last changed from “neutral” on 11-Apr-2025)
  • Trading model: Bullish (Last changed from “neutral” on 28-Feb-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.

 

 

Threats to the 60/40 Portfolio

The conventional asset mix of 60% equities and 40% bond is designed to maximize return and minimize volatility risk under a reasonable set of risk tolerance assumptions. The equity portion of the portfolio is meant to provide growth, while the bond portion is designed to provide portfolio stability as bond prices have low to negative correlation to stock prices. In addition, bonds have the additional benefit of a steady income and high assurance of capital preservation, or getting your money back.

 

What happens if the “getting your money back” assumption is shaken?

 

Investors saw that recently when Treasury yields rose (and Treasury prices fell) and the USD fell at the same time. The episode was interpreted as a possible end to the era of American Exceptionalism and the USD as a safe-haven asset. While we saw a similar episode in early 2018, it nevertheless underscores concerns about the 60/40 portfolio as stock bond correlations were rising in both instances. Rising correlation leads to greater portfolio volatility and a reduction in the diversification effects of the two asset classes, which can be worrisome during the current climate of elevated market stress.
 

 

What can investors do under such circumstances?
 

 

The Price of Diversification

If the market is losing confidence in the USD and Treasury assets, investors can diversify into a portfolio of non-U.S. sovereign bonds as an alternative. U.S.-based investors should consider the iShares International Treasury Bond ETF (IGOV), which is designed to track the FTSE World Government Bond Index–Developed Markets Capped (USD). Here are the characteristics of IGOV from iShares.
 

 

The characteristics of IGOV are similar to the 7–10 Year Treasury ETF (IEF). The effective duration, or interest rate sensitivity, of both are similar, though IGOV shows a much lower weighted average coupon of 2.23% compared to 3.84% for IEF.
 

 

Diversification has a price in addition to the obvious substantial reduction in average coupon rate. IGOV has underperformed IEF in the last 10 years, though its relative performance popped in the wake of the latest scare (black line, top panel). Foreign bonds provide some inflation protection against domestic bonds through the foreign exchange channel. The accompanying chart also shows the relative performance of TIPs against IEF (red dotted line). The relative performance of TIPs and IGOV were closely correlated until they diverged in mid-2021.
 

 

A U.S. investor concerned about the decline of American Exceptionalism can consider a basket of IEF and IGOV for the bond portion of his 60/40 portfolio. As IGOV has surged against IEF and looks extended on a relative basis, investors seeking to diversify their holdings should average into their IGOV positions over the next few months.
 

On the other hand, fears about the USD could be a head-fake. These covers of The Economist, which were published six months apart, could be the bookends of the perfect contrarian magazine cover signals.
 

 

 

A Cautious Outlook

Nevertheless, I believe the bond portion of a portfolio is becoming increasingly important. Consider the following mystery chart. The top panel is the S&P 500 over the past year, but what are the constructive patterns of the other panels?
 

 

Mystery revealed: They are the relative performance of defensive sectors, which (from top to bottom) is healthcare, consumer staples, utilities and real estate. The constructive patterns of relative performance of these sectors are indicative of a longer-term bear market structure of the U.S. equity market.
It’s time to be more defensive.

 

To be sure, sentiment models are showing substantial levels of fear.
 

 

The latest AAII sentiment survey shows another week of extreme anxiety.
 

 

An analysis of insider activity shows that insider buying (blue line) recently came within a hair of insider selling (red line). In the past, such signals have resolved in price rebounds of differing durations.
 

 

On the other hand, forward 12-month earnings estimates look wobbly as Q1 earnings reporting season begins. With only 12% of S&P 500 companies reported, the EPS and sales beat rates are below historical averages.
 

 

CNBC reported that shipping volumes to the U.S. are collapsing in the wake of the substantial increase in tariff rates. Left unchecked, this will lead to COVID-era supply chain bottlenecks in the coming months.
 

 

Earnings season begins in earnest in the coming week with Magnificent Seven Tesla and Alphabet reporting. Stay tuned.
 

 

Putting it all together, I believe that the current market trajectory will follow the script of bear market rallies of the dot-com bear of 2000, 2008 GFC bear, 2022 inflation fear bears of a substantial drop, a massive bear market rally, and a probable break to new lows. Trump’s tariffs will cause massive dislocations in the economy in the coming months. Anecdotal evidence from ports data will push CPI to an annualized 4% and beyond starting with the April report. Trump realizes this, and that’s why he lashed out at Powell last week by citing the backwards looking benign inflation backdrop. As price pressures and shortages build, it will put the Fed in a difficult position and a debate about whether it should look trough the one-time price rise. Barring significant progress on the trade war front, the higher for longer narrative and weaker economic outlook will weigh on risk appetite.

 

In conclusion, I interpret the combination of technical, sentiment and fundamental conditions as the stock market being ripe for a short-term relief rally, but it is at substantial risk of a much deeper downdraft as more difficult macro conditions become evident.Tactically, the market is trying to recover from a severely washed-out and oversold condition and it’s ripe for a short-term rebound. The short-term challenge for the bulls is to stage an S&P 500 upside breakout through the falling trend line (blue), followed by a breakout of the 50% Fibonacci retracement level at 5500. That said, the minor short-term positive divergence of the NYSE Advance-Decline Line is constructive for the bull case.

 

 

Known unknowns, and unknown unknowns

Ahead of the Second Gulf War, Secretary of Defense Donald Rumsfeld famously referred to “known knowns”, “known unknowns” and “unknown unknowns” when responding to a question about Iraqi weapons of mass destruction.

 

Fast forward to 2025, investors have to contend with a series of known unknowns and unknown unknowns as they consider their investment policy in an environment where global economic uncertainty has skyrocketed to an all-time high.
Here are some known unknowns to consider:

  • What are the objectives of Trump’s negotiations and how far is he willing to go?
  • When will the chaos subside enough that companies can plan and respond to the changes in tariff regimes?
  • Will the U.S. economy fall into recession?

Here are some unknown unknowns to consider:

  • Have the USD and Treasury securities permanently lost their position as safe havens?
  • How much damage has been done to the post-World War II security and financial architecture?

 

 

 

The Negotiations Begin

The markets staged a relief rally on the news that “reciprocal tariffs” would be paused for 90 days for all countries except China and USMCA members Canada and Mexico as the U.S. negotiates with over 70 countries. Investors should expect elevated levels of volatility in light of the tight timeline. The WSJ reported that the main objective of the trade negotiations is to gather allies against China. Not only does the U.S. want to raise a tariff wall against China, the U.S. wants to prevent the diversion of Chinese exports to the U.S. through third countries.

 

It’s unclear whether the negotiation strategy will be successful. America’s allies are in shock over Trump’s initial moves against Canada and Mexico, his desire to annex Greenland, his tilt toward Russia in the Russo-Ukraine War, his characterization of the European Union as an organization designed to “screw us” and calling the U.S.-Japan relationship “one-sided” even as negotiations begin.

 

The attack on allies has produced the perverse effect of pushing them away from the U.S. and toward closer relations with China. Ursula von der Leyen, President of the European Commission, spoke with Chinese Premier Li Qiang about closer trade relations. Representatives from Japan, South Korea and China met and vowed to strengthen trade relations. Xi Jinping visited Vietnam as was warmly greeted as China and Vietnam signed over 40 trade deals.

 

The response shows the limitations of Trump’s negotiating style. Instead of the usual win-win negotiation tactics normally used in trade discussions, a WSJ editorial characterized Trump’s win-lose approach creating fear to use as leverage: “Creating fear is his go-to strategy for inducing people to comply with his wishes. If threats don’t suffice, he moves against vulnerable individuals and institutions, making examples of them to terrify others into obedience.”

 

Such an approach doesn’t always work: “Although some smaller countries such as Vietnam are offering concessions to ward off the president’s tariffs, others — including giants such as China and Canada — have already responded with countermeasures, and the European Union also is preparing a firm response.”

 

In addition, recent events have revealed some of Trump’s pain points. The recent bond market tantrum forced Trump to soften his stance and seek an off ramp by rolling back and pausing “reciprocal tariffs” for 90 days. China’s ban on certain rare earth exports and its halt of Boeing aircraft deliveries will cause significant pain.
 

 

An Abysmal Outlook

As a consequence, companies are pausing their expansion and hiring plans in the face of the growing uncertainty. Blackrock CEO Larry Fink recently stated: “Most CEOs I talk to say we are probably in a recession right now. A couple of airline CEOs told me, and one CEO specifically said, ‘The airline industry is like a proverbial burden, a canary in a coal mine.’ I was told that the canary is sick already…I do believe we’re probably starting, if not already in, a recession.”

 

While some companies have declined to offer guidance during Q1 earnings season, it was remarkable that UAL offered guidance on its earnings report based on two scenarios, stable bookings and recession.
The soft survey data points to an abysmal outlook. The New York Fed’s survey of regional manufacturers show new orders at the lowest level of its entire history.

 

 

A detailed analysis of every component of the survey, such as new orders, shows that employment is going down, with the exception of prices (received, and paid) which are going up.
 

 

 

As Q1 earnings season begins, the Citi U.S. Earnings Revisions Index is deeply in the red.
 

 

 

The Recession Question

Against this backdrop of uncertainty, investors have to ponder the question of whether the U.S. economy will plunge into recession. Historically, non-recessionary bear markets tend to be shorter and experience milder drawdowns than recessionary bear markets.

 

 

I believe it’s too early to tell. Trump’s abrupt tariff announcement was an exogenous shock whose effects have yet to be fully felt by the economy. The soft survey data is plunging and the fall has the potential to create a negative feedback psychological loop. However, the hard data hasn’t meaningfully declined.
 

Early indications are not encouraging. The Citi U.S. Economic Surprise Index, which measures whether economic data is beating or missing expectations, resumed its decline after a brief upward reversal.
 

 

The latest University of Michigan survey of employment expectations has been weak, and readings in this survey have historically led the unemployment rate. The concerns over employment may lead to a market hyper-focus on the weekly initial jobless claims data, much in the manner the market focused on weekly money supply reports during the Volcker Fed’s tight money era of the early 1980s.
 

 

The latest BoA Global Fund Manager Survey shows that a recession is now the consensus call at 49%.
 

 

For a snapshot of the recession question, I turn to New Deal democrat, who has been monitoring the state of the economy using a series of coincident, short-leading and long-leading indicators. To make a long story short, he is relying on the hard data to make a recession call:

The long leading indicators remain neutral, despite the sharp un-inversion of parts of the yield curve, including a sharp “bear steepening” at the long end. Unless something significant changes, corporate profits are likely to tip the balance within several weeks.

 

The short leading indicators, which were positive only two weeks ago, are now negative, as commodities, financial stress, and gas usage have all turned negative, while stocks remain neutral despite their gyrations.

 

The coincident indicators remained positive, mainly because consumer spending has held up. There may be evidence of frontrunning tariffs in the sharp increase in rail traffic.
I anticipate that sharp reversals (and re-reversals) in Washington will continue to drive the news cycle. The new 40 year low in consumer confidence is very concerning, but in the past it has usually taken several quarters for that to manifest in actual consumer and producer retrenchment. As usual, the hard data will tell, and the high frequency data will tell first.

In a separate blog post, he elaborated on the weakness of the short leading indicators and why he isn’t on recession watch yet:

I would want to see some spreading out of weakness from the financial and interest rate data into the “hard” economic data before a ‘recession watch’ would be warranted.” The strength of the current hard data has been affected by consumers and companies purchases to front-run tariffs. Investors will need until the May–July time frame to assess the true picture after the pre-stocked inventory has been depleted.

 

 

The Unknown Unknowns

Finally, investors have to ponder the “unknown unknown” questions, which are:

  • Have the USD and Treasury securities permanently lost their position as safe havens?
  • How much damage has been done to the post-World War II security and financial architecture?

The recent bond market tantrum, which saw Treasury yields spike and a decline in the USD, was unusual inasmuch as investors have usually rushed into USD and Treasury assets as safe-haven trades during periods of market stress. The latest episode saw the opposite effect of a rush away from these assets.
What caused the bond market sell-off? A MarketWatch article reported that how Fidelity portfolio manager Mike Riddell rounded up and questioned the usual suspects: