Market Broadening Gains Momentum as AI Uncertainty Grows

Market Broadening Gains Momentum as AI Uncertainty Grows

Despite generally favorable data that showed cooling inflation alongside steady overall economic output, the S&P 500 Index slipped and ended the week lower by 1.55 percent. The prime culprit was renewed questioning of the artificial intelligence (AI) buildout given the increasing amount of capital investment needed to bring it to life and the corresponding costs for those who use the technology weighed against its potential productivity benefits. This was accentuated on Friday with the announcement of Moonshot’s new AI model Kimi K3, a low-cost model from China that appears to rival the strongest and most expensive offerings from OpenAI and Anthropic. This raised questions about whether the industry’s enormous spending spree—which has helped power the U.S. economy and markets forward over the past few years—could ultimately prove unsustainable.

While questions around AI increased during the week, quietly and beneath the surface, other parts of the previously bifurcated U.S. economy and markets performed better. This is particularly true in markets, where a rotation (rather than an outright sell-off) continued after gaining steam in June. After technology stocks, on the back of rising AI enthusiasm and earnings, drove markets higher off the March 30 bottom—rising 41.9 percent through the end of May—June saw a notable shift in leadership that continued into last week. Technology stocks checked in as the worst-performing sector, falling 3.78 percent, and have similarly been the worst-performing sector since the end of May, with a 6.95 percent decline. Given that the S&P 500 is heavily concentrated in technology with a 37 percent weighting, this drove the overall index lower last week and since the end of May.

Beneath the surface, however, a rotation is occurring, with new sectors emerging as relative winners. Despite the pullback in the overall index, last week saw energy, real estate (an area where we recently added exposure), consumer staples, financials, and healthcare post positive returns. In short, market leadership has been shifting. This is best illuminated through the performance of high- versus low-momentum stocks. Momentum investing simply involves buying the stocks that have recently performed best while shorting—or avoiding—stocks that have performed the worst.

This strategy performed poorly last week, with a 4.63 percent decline on a sector-neutral long-short basis that has now driven its performance to -8.88 percent since May 30. In other words, the market’s previous favorites with the highest price momentum have faltered, while recent laggards with the least momentum rallied. Interestingly, a strategy that we believe holds merit for intermediate- to longer-term-focused investors—especially given the market’s elevated valuation—buying stocks that are cheap while avoiding those that are expensive was the best-performing factor last week, rising 6.73 percent and pushing its return since the end of May to 13.78 percent.

Much of this dispersion was driven by the underperformance of the previous AI-tied technology favorites. It also ties into our narrative of a market broadening from a narrow group of technology stocks that have driven the market higher to different companies and sectors assuming leadership as AI pushes through the value chain, bringing the technology to life and ultimately shifting benefits to the broader economy and companies that use it to increase productivity and profitability. Last week’s economic data supported our belief that a broadening economy will continue to produce a broader market. The Fed’s Beige Book showed continued resilience in economic activity coupled with an improvement in employment, while retail sales pushed higher on the back of improved consumer confidence, and the National Federation of Independent Businesses (NFIB) small business optimism rose. Most importantly, both the Consumer Price Index and Producer Price Index showed substantial pullbacks in inflationary pressures during June, which will likely keep the Fed on the sidelines at its next meeting on July 28–29.

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