Market Breadth Improves as AI Weakness and Growth Concerns Shape the Outlook

Executive Summary

Markets begin the week with a constructive but increasingly selective investment backdrop. Improving equity-market breadth, exceptionally strong corporate earnings, and resilient economic activity continue to provide meaningful support, even as weakness in AI-related stocks, elevated borrowing costs, and persistent inflation pressures create a more challenging environment. With major technology earnings reports, the Federal Reserve’s October meeting, and key economic data releases ahead, investors will be focused on whether strong fundamentals can sustain the expansion as monetary policy remains restrictive and growth potentially moderates.

Key Takeaways:

• Market breadth continues to improve. Despite weakness in large-cap technology and AI-related stocks, the equal-weighted S&P 500, small caps, and Dow Jones Industrial Average advanced last week, suggesting rotation within equities rather than broad-based risk aversion.
• Corporate earnings remain exceptionally strong, but scrutiny of AI is increasing. Third-quarter S&P 500 earnings growth is tracking at 29.5%, with 83% of reporting companies exceeding expectations. However, investors are increasingly focused on whether substantial AI capital expenditures can generate sustainable profits and free cash flow.
• Economic growth remains resilient but increasingly uneven. Strong business activity, limited layoffs, and continued capital investment contrast with significant housing weakness, subdued consumer confidence, and renewed inflation pressures.
• The Federal Reserve remains cautious as inflation risks persist. Policymakers are expected to hold rates steady Wednesday, although additional tightening remains possible later this year or in early 2027. The challenge remains to restore price stability without materially undermining economic growth.
• The coming week will test the expansion’s durability. Earnings from Alphabet, Microsoft, and Amazon, along with GDP and PCE inflation data, will offer important insight into corporate profitability, returns on AI investment, and the balance between slowing growth and persistent inflation.

Financial Markets

U.S. equity markets finished last week mixed, with headline index performance masking a meaningful improvement in market breadth. Weakness among large-cap technology and artificial intelligence-related companies weighed down the cap-weighted S&P 500 and NASDAQ. In contrast, the equal-weighted S&P 500, Small Cap S&P 600, and the price-weighted Dow Jones Industrial Average finished the week higher. Importantly, the divergence within U.S. equities suggests that investors are rotating away from a narrow group of former leaders rather than broadly abandoning risk assets.

The improvement in breadth has been particularly notable given the severity of the recent correction in AI-related stocks. On Thursday, the capitalization-weighted S&P 500 declined approximately 1.2%, while its equal-weighted counterpart gained 0.7%, producing a nearly 194-basis-point performance differential, the largest since July 2024. More than twice as many index constituents advanced as declined, illustrating the extent to which weakness was concentrated in the market’s largest companies. This broadening participation is encouraging, suggesting underlying investor appetite remains healthy and capital is rotating into a wider range of companies rather than leaving the equity market altogether.

Artificial intelligence remains at the center of this rotation. Recent headlines have highlighted increasingly cautious investor sentiment, with rising credit spreads among large technology companies, greater scrutiny of AI financing and valuations, and delays or reconsideration of potential public offerings. OpenAI reportedly lowered its valuation target in its latest fundraising round, while developments around Meta’s Muse model have renewed questions about the computing resources needed to develop advanced AI systems and the returns those investments may ultimately generate. These concerns contrast with continued evidence of robust underlying demand. The distinction is increasingly important: investors are not necessarily questioning demand for AI computing, but rather the financing needs, valuations, and ultimate profitability of the companies supporting it.

Corporate earnings remain an important counterweight to these concerns. According to FactSet, the S&P 500’s blended third-quarter earnings growth rate stands at 29.5%, with about 24% of companies reporting results. Of those companies, 83% have exceeded consensus earnings-per-share expectations, above both the one-year average of 82% and the five-year average of 78%. Earnings strength continues to support elevated equity valuations, although positive revisions remain concentrated in a relatively narrow group of companies, and strong results have not always translated into positive share-price reactions. Meanwhile, Treasury markets have begun to reflect different concerns. The 10-year Treasury yield declined from approximately 5.15% to 5.00% during the week, despite higher oil prices and persistent inflation pressures. The decline suggests investors are assigning greater weight to the possibility that elevated borrowing costs, tariffs, tighter monetary policy, demographic trends, and a fading fiscal impulse could gradually slow economic growth.

Economics

Recent economic data continue to describe an expanding but increasingly uneven U.S. economy. The most pronounced weakness remains in housing, where elevated mortgage rates, high construction costs, and weak consumer confidence continue to weigh on demand. September pending home sales declined 7.3% month over month, pushing the index to a record low, while housing starts fell 5.2% to an annualized pace of 1.221 million, marking a third consecutive monthly decline. October homebuilder sentiment also hit its lowest level since June 2012, reinforcing the pressure elevated borrowing costs are putting on housing activity. Labor market conditions were more encouraging, with initial jobless claims declining to 194,000, their lowest level since mid-July, although continuing claims edged higher and ADP’s four-week average of private-sector hiring slowed to approximately 18,500. Together, these indicators remain consistent with a “low-hiring, low-firing” labor market, where limited layoffs continue to support household incomes despite subdued hiring.

Business activity was considerably stronger. October’s preliminary composite Purchasing Managers’ Index (PMI) registered 57.6, signaling the second-fastest expansion since March 2022, with manufacturing reaching its highest level since May 2022 and new orders accelerating to their strongest pace in more than four years. However, selling-price inflation also reached its highest level since August 2022, reflecting persistent pressure from energy, freight, and other input costs. Consumer sentiment remained subdued at 48.0, while year-ahead and longer-term inflation expectations increased to 4.7% and 3.5%, respectively, underscoring the continued strain on household confidence and purchasing power.

Policy

Monetary policy returns to the forefront this week as the Federal Reserve concludes its October meeting on Wednesday. Policymakers are widely expected to leave the federal funds target range unchanged at 3.75%–4.00%, following September’s 25-basis-point increase. However, the broader outlook remains tilted toward additional tightening, potentially in December and early 2027, as inflation continues to exceed the Fed’s 2% target. September’s core Consumer Price Index (CPI) rose 2.6% year over year, while elevated energy prices, tariffs, and supply chain disruptions continue to exert inflationary pressure. Policymakers remain concerned that repeated supply shocks could become embedded in longer-term inflation expectations, even as their underlying causes lie largely beyond the Fed’s control. Recent commentary suggests a preference for patient, incremental adjustments rather than an aggressive tightening cycle. Investors will focus on whether the Committee retains September’s language emphasizing a timelier return of inflation to target, as well as on Chair Kevin Warsh’s press conference for clues regarding a potential December move and the Fed’s ongoing policy framework reviews. Overall, the projected policy path appears more consistent with reversing a portion of last year’s rate cuts than beginning a prolonged tightening campaign.

The Federal Reserve is not alone in facing important policy decisions this week. The Bank of Canada will announce its decision Wednesday, followed by the European Central Bank on Thursday and the Bank of Japan on Friday. These meetings are particularly consequential because the current inflation shock is affecting major economies differently. The United States continues to benefit from substantial domestic investment, healthy corporate profitability, and resilient consumption, while Europe faces greater exposure to imported energy costs and fiscal constraints. Japan must balance higher import prices against currency movements and domestic inflation pressures. These differences could lead central banks to pursue increasingly divergent policy paths, introducing additional volatility into foreign exchange markets, sovereign bond yields, and international equities. With global borrowing costs already elevated, investors will continue to weigh the interaction between monetary policy, fiscal sustainability, and economic growth.

Conclusion

Markets begin the week with a constructive but increasingly selective investment backdrop. Improving equity market breadth suggests that recent weakness in AI-related stocks reflects a rotation in leadership rather than broad-based risk aversion, while exceptionally strong corporate earnings, expanding business activity, and stable labor market conditions continue to support the broader economy. The AI investment cycle remains a key structural growth driver, though investors are becoming more discerning about returns on substantial capital expenditures. This week’s earnings reports from Alphabet, Microsoft, and Amazon will provide a critical test, with attention focused on AI spending plans, free cash flow, and evidence of monetization. Meanwhile, elevated borrowing costs, higher energy prices, tariffs, and tighter monetary policy present meaningful headwinds to growth. Although these pressures could contribute to a mid-cycle slowdown in 2027, strong profitability, sustained investment, and limited layoffs continue to suggest a more resilient economic outlook than recent concerns might imply. Unresolved Middle East tensions remain an important risk, particularly through their potential impact on global energy supplies, inflation, and economic growth.

Against this backdrop, the Federal Reserve is likely to remain cautious at Wednesday’s meeting, with the central question being whether policymakers can restore price stability without materially undermining economic growth. Thursday’s GDP and Personal Consumption Expenditures (PCE) inflation reports will provide an important test of that balance. For investors, the message remains one of disciplined optimism. Strong earnings, resilient economic activity, and improving market breadth provide a constructive foundation, but elevated interest rates, geopolitical uncertainty, and increasingly demanding AI valuations leave less room for disappointment. Maintaining diversification, emphasizing companies with durable profitability and strong balance sheets, and remaining disciplined around valuation remain essential as markets navigate a potentially slower, but still expanding, economy.

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