Navigating the Cross-Currents Shaping Today's Markets: Insights from Jurrien Timmer - October 19, 2026

A new twist in correlations

Last week stood out for an unusual shift in how markets moved together. Oil and stocks have been negatively correlated, oil and bonds positively correlated, and bonds and stocks positively correlated. But the correlation between bonds and the relative performance of AI versus non-AI stocks, which used to be positive, has flipped to negative. To Jurrien, that suggests the AI story is now deemed systemically important enough for the overall economy. If the AI bubble were to burst, it would affect the economy, inflation, the bond market and Fed policy. Whether this is a temporary development or something more lasting remains an open question, he acknowledged, but it was a noteworthy change.

Echoes of the dot-com era

The comparison between today and the dot-com bubble surfaced again. The price pattern fits almost perfectly and, according to Jurrien, could suggest the market may be nearing a top.  But the glass-half-full counterargument has been the fundamentals. Earnings are booming today, whereas back then there were few earnings to speak of, just the promise of them. Valuations skyrocketed in that era, while tech valuations today are falling. Digging deeper changes part of that picture. In the dot-com era, the early warning signs were not the extreme-valuation equity names, he pointed out. Rather, they were the telecommunications companies investing heavily in fibre optics, financed through speculative-grade debt. The first cracks showed up in the credit market, not the stock market. A present-day parallel can be seen in the financing stress at certain AI-linked companies, where all-in borrowing yields have jumped from around 7% to 15% or 16% in a matter of months.

Isolated incident or early warning sign?

That leads to a key question: Is today's stress among speculative-grade capital-expenditure players the first sign the whole thing falls apart, or merely an isolated incident like the Silicon Valley Bank episode of 2023, which ended up not being systemic at all? There could even be a silver lining. If the market becomes more prudent and disciplined about what gets funded and how much is too much, that might temper the broader story before it becomes a runaway train. Jurrien described himself as hopeful, though open to the possibility that he was being overly optimistic.

Why yields are rising everywhere

A popular narrative holds that yields, especially real yields, have risen mainly because growth is strong. Part of the move does reflect a growing economy, he agreed. But that cannot be the whole story. Yields are rising almost everywhere, in France, Germany, Canada and the U.K., except in China, and several of those economies are barely growing. Instead, he sees a confluence of narratives: growth, fiscal risk, structural inflation running well above 3%, and a more opaque Fed stance that pushes investors to demand a higher term premium. Real 10-year yields near 2.8% now sit above what he views as the economy's equilibrium for real rates, which historical data going back to the 1940s places around 2% to 2.5%. When real rates climb above that level while debt is high, as in France and the U.S., questions of fiscal risk and debt sustainability move to the foreground.

The affordability disconnect

Headline inflation, not core, is what voters experience directly, Jurrien observed. In an era of elevated oil prices and a food-driven affordability squeeze since the pandemic, he wonders whether core inflation has lost some relevance and whether headline inflation, running between 3% and 4%, deserves more attention. That's a different world from the 1% to 2% range, and the bond market has been repricing itself through higher yields as a result. Jurrien suggested this may help explain the K-shaped economy. The stock market sits at all-time highs and GDP is growing strongly, yet consumer confidence surveys sit near all-time lows because food, energy and shelter costs weigh heavily on households. Home prices are roughly 25% higher than before the pandemic, with mortgages near 7%.

Earnings: secular or cyclical?

One of the biggest questions he is grappling with is how long earnings can stay at such elevated levels. Trailing earnings are growing around 30%, with forward estimates even higher, placing the market far out on the right tail of the historical earnings-growth distribution, a spot usually reached only during a recovery from recession. Historically, investors pay lower price-to-earnings (P/E) multiples for peak earnings because earnings are cyclical. The one exception was 2021, when investors paid rich multiples on fast-growing earnings, and the following year brought a sharp reset. Today, the forward P/E sits around 19 while earnings grow at 30% to 40%, which is still well above what investors historically paid for growth at this rate. That gives him pause, since it implies the market may be assuming the earnings story is secular rather than cyclical. His way to handicap that uncertainty is to go global, favoring a more international equity allocation that includes Canada and Europe, where eurozone banks are generating attractive yields.

Positioning through diversification

Those uncertainties also influence how he thinks about portfolio construction. Jurrien reiterated his preference for a 60-20-20 framework over the traditional 60-40. Bond yields are attractive and offer good risk-return characteristics, he explained, but bonds remain positively correlated to equities unless a significant growth shock materializes. That's why he wants assets that will zig when the growth side zags: gold, commodities, managed futures, short-dated inflation-linked bonds and even non-AI stocks that are uncorrelated to the broad index. A couple of percentage points in each can build a 20% block that moves independently.

Conclusion: watching the cross-currents