CNBC Daily Open: Breaking the September market curse

The S&P 500 is notably up 2.84% this September, potentially breaking a historical negative trend for the month, supported by strong economic data including 3.8% Q2 GDP growth, though new tariffs and the prospect of the Fed maintaining rates due to robust economic signals introduce caution. This market environment coincides with the Buffett Indicator reaching an all-time high, signaling potential exuberance, and Intel becoming deeply overbought after a significant rally. Separately, OpenAI, now valued at $500 billion, is aggressively pursuing multi-billion dollar infrastructure deals to scale AI development, raising investor scrutiny over its substantial cash burn.

Analysis

The U.S. market is presenting a bifurcated outlook as September nears its end. While the S&P 500 is on track to defy its historical negative trend for the month with a 2.84% gain, buoyed by strong economic indicators like 3.8% Q2 GDP growth and a resilient labor market, underlying caution prevails. This caution stems from fresh tariff policies and the paradoxical risk that strong economic data may prevent the Federal Reserve from cutting interest rates, thereby reining in market momentum. Valuation concerns are escalating, evidenced by the Buffett Indicator reaching an all-time high, which suggests market exuberance may be at a peak. At a single-stock level, Intel (INTC) has seen a year-to-date gain of nearly 80% but is now flagged as being deep in overbought territory, a technical warning for investors. In the AI sector, OpenAI's aggressive multi-billion dollar infrastructure deals with partners including Oracle and Broadcom highlight a massive capital investment cycle, but the firm's significant cash burn is beginning to raise analyst and investor scrutiny regarding its financial sustainability.

Key Decisions for Investors

• Given the conflicting signals of a strong economy versus an all-time high Buffett Indicator and potential Fed hawkishness, investors should consider trimming exposure to highly valued market segments to manage downside risk.
• For Intel (INTC), its deeply overbought status following an almost 80% year-to-date gain suggests it may be prudent to take some profits or implement protective strategies against a potential near-term correction.
• While OpenAI's immense infrastructure spending is a positive catalyst for suppliers like Oracle and Broadcom, investors should closely monitor OpenAI's cash burn and funding developments, as any slowdown could materially impact these partners' growth trajectories.