Resilient stocks rally faces earnings wave after AI, Fed wobbles

U.S. equities extended their rally through October, supported by strong Q3 earnings beats, yet investors are increasingly wary of the S&P 500's elevated valuation, now at dot-com bubble levels, which necessitates continued robust earnings growth. Federal Reserve Chair Powell's recent remarks casting doubt on a December rate cut, combined with a government shutdown delaying critical economic data and corporate layoff announcements, are creating a "data vacuum" that amplifies market uncertainty regarding the labor market and future monetary policy. The AI trade also presents mixed signals, with some megacaps facing scrutiny over spending while others demonstrate strong growth.

Analysis

The U.S. stock market sustained its rally through October, with the S&P 500 gaining 2.3% for its sixth consecutive monthly advance, contributing to a 16% year-to-date increase. This performance is underpinned by robust third-quarter corporate earnings, where 83% of reported S&P 500 companies exceeded expectations, projecting a 13.8% profit increase year-over-year according to LSEG IBES. This strong earnings beat rate, if it holds, would be the sixth highest on record.

However, this rally has pushed the S&P 500's forward price-to-earnings multiple above 23, reaching levels last seen during the dot-com bubble, prompting concerns that future returns will heavily rely on continued earnings growth. The artificial intelligence theme presents mixed signals; while Amazon and Alphabet saw gains due to strong growth or funding capacity, Meta Platforms and Microsoft shares declined following increased AI spending. Investors are seeking evidence that AI investments are paying off, not just growth prospects.

Monetary policy uncertainty has heightened after Fed Chair Powell indicated a December rate cut is "not a foregone conclusion," contrary to investor expectations. Compounding this, the ongoing government shutdown has created a "data vacuum," delaying critical economic reports and forcing investors to rely on alternative data and corporate announcements, such as Amazon's 14,000 job cuts, to gauge economic health.

Despite these headwinds, historical data suggests a potentially strong year-end, with November and December typically being top-performing months for the S&P 500. Past instances of 15%+ year-to-date gains through October have almost always led to further gains in the final two months, though some investors question if this year's strength has already pulled forward typical year-end cheer.

Key Decisions for Investors

• Investors should closely monitor upcoming corporate earnings for sustained growth, given high valuations necessitate strong profit performance to drive future returns.
• Scrutinize AI-related investments for clear return on investment, differentiating between companies with effective capital allocation and those with unproven spending.
• Prioritize alternative economic data and corporate labor market announcements to assess economic health amidst the government data vacuum and Fed uncertainty regarding interest rate policy.
• Evaluate potential year-end seasonality for market tailwinds, but remain cautious given current elevated valuations and the possibility of pulled-forward gains.