Stock market today: S&P 500 notches 4th consecutive record as Google earnings fuel AI hopes

US equities closed mixed on Thursday, with the S&P 500 notching its fourth consecutive record close and the Nasdaq Composite reaching a fresh high, largely propelled by strong Alphabet earnings that reinforced AI's role as a key growth catalyst. Conversely, the Dow Jones Industrial Average declined, weighed down by post-earnings slides in IBM and a significant drop in Tesla shares following an earnings miss and CEO warnings of 'rough quarters.' Broader market sentiment was also impacted by airlines Southwest and American Airlines cutting profit forecasts due to weak domestic travel demand, and UnitedHealth disclosing a DOJ investigation into its Medicare billing practices, indicating a divergence in sector performance despite overall tech optimism.

Analysis

The market is exhibiting significant bifurcation, with the S&P 500 and Nasdaq Composite reaching their fourth consecutive record highs while the Dow Jones Industrial Average declined 0.6%. This divergence is primarily driven by a narrow, theme-specific rally centered on Artificial Intelligence. Alphabet's (GOOGL) strong earnings beat, fueled by AI-driven growth in its Search business, has bolstered sentiment across the AI ecosystem, lifting related stocks like Nvidia (NVDA). Analysts are endorsing Alphabet's increased capital expenditure guidance—now $85 billion for the year—viewing it as an investment with a clear return, evidenced by price target upgrades from firms like Bank of America and RBC Capital. However, this optimism is not universal within the tech sector. Tesla (TSLA) shares fell 8% after an earnings miss, a 23% slide in European sales, and a warning from its CEO of a "few rough quarters" ahead due to expiring EV credits. Similarly, IBM's stock slid 7.6% on disappointing software sales and a lack of forward guidance. Weakness extends beyond tech, with airlines signaling economic fragility. Southwest (LUV) shares dropped over 11% after slashing its full-year pre-tax profit forecast from $1.7 billion to a $600-$800 million range, citing macroeconomic headwinds. American Airlines (AAL) echoed this sentiment, noting a 'tough' July and a 6% year-over-year decline in domestic revenue. Meanwhile, macro signals are mixed; while initial jobless claims fell to a three-month low, ongoing political pressure on the Federal Reserve and the introduction of a potential 15% baseline tariff create a backdrop of policy uncertainty.

Key Decisions for Investors

• Given the market's positive reaction to Alphabet's earnings, investors should overweight exposure to companies demonstrating clear monetization of AI, as the market is currently rewarding capital expenditure in this area.
• The severe guidance cuts from Southwest and American Airlines signal weakening consumer demand, warranting caution on consumer-facing sectors and a potential re-evaluation of holdings sensitive to discretionary spending.
• The stark performance divergence between AI-centric firms like Alphabet and struggling legacy tech like IBM and EV-maker Tesla underscores the need for a highly selective, rather than broad-based, approach to technology investments.
• Investors should monitor for escalating trade tensions, as the new 15% baseline tariff mentioned could disrupt the positive sentiment fueled by the US-EU and US-Japan trade deal hopes.
• Consider trimming positions in companies showing specific fundamental weaknesses, such as UnitedHealth's DOJ investigation or Tesla's combination of an earnings miss and operational headwinds, as the market is clearly punishing such news.