Stock market today: Dow, S&P 500, Nasdaq fall as Wall Street digests earnings, Trump tariffs

US stocks retreated Tuesday, with the S&P 500 down 0.5%, as investors digested mixed corporate earnings, including Palantir's 7% jump on its first $1 billion revenue quarter, alongside an unexpected flatlining of the services sector in July. Market sentiment was further pressured by President Trump's escalating tariff threats on India and pharmaceutical imports, and ongoing uncertainty regarding the next Fed chair, highlighting a complex economic and policy landscape.

Analysis

U.S. equities retreated on Tuesday, with the S&P 500 falling 0.5%, as investors contended with a mix of negative macroeconomic signals and geopolitical uncertainty. The primary catalyst for the downturn was unexpectedly weak economic data, as the ISM services PMI registered 50.1 for July, significantly below the 51.5 forecast and indicating a flatlining services sector. This economic softness was compounded by escalating trade policy risks, including President Trump's threats of new tariffs on India and a potential 250% tariff on pharmaceutical imports. Further uncertainty stems from domestic policy, with the next Federal Reserve chair expected to be named "soon." In contrast to the broad market decline, Palantir (PLTR) provided a notable exception, with its stock surging approximately 7% after reporting its first-ever quarter with over $1 billion in revenue, demonstrating that strong company-specific results can still drive significant outperformance.

Key Decisions for Investors

• Given the weak ISM services data and heightened tariff threats, investors should consider a more defensive posture and monitor upcoming economic reports and policy announcements for signs of further deterioration.
• Palantir's strong performance following its earnings beat highlights the potential for alpha in stock selection; focus on companies with robust fundamentals that can weather a challenging macroeconomic environment.
• Traders should prepare for increased volatility surrounding upcoming earnings releases from bellwethers like AMD, Disney, and McDonald's, as well as any official announcements regarding new tariffs or the Federal Reserve leadership.