U.S. Stocks Close Mostly Lower But Well Off Worst Levels

U.S. equities closed notably lower on Tuesday, extending recent declines, primarily driven by renewed trade uncertainty after a U.S. appeals court ruled most of President Trump's global tariffs illegal, sparking concerns over potential government liabilities. The Nasdaq, S&P 500, and Dow fell approximately 0.6-0.8%, while Treasury yields surged, with the 10-year note climbing 5.0 basis points to 4.277%. Although the court delayed implementation until October for a potential Supreme Court appeal, the ruling significantly impacted investor sentiment. Separately, the ISM Manufacturing PMI for August inched up to 48.7 but still indicated a sixth consecutive month of contraction, reflecting ongoing weakness in the manufacturing sector.

Analysis

U.S. equity markets experienced a broad-based decline, extending a recent pullback, with the Nasdaq falling 0.8% to 21,279.63, the S&P 500 sliding 0.7% to 6,415.54, and the Dow dropping 0.6% to 42,295.81. The primary catalyst for the sell-off was a U.S. Court of Appeals ruling that declared most of the Trump-era global tariffs illegal, introducing significant fiscal uncertainty. This decision triggered a surge in Treasury yields, with the benchmark ten-year note yield jumping 5.0 basis points to 4.277%, as investors priced in the risk of the government having to repay billions in collected tariffs. While the court has delayed the order's implementation until October to allow for a Supreme Court appeal, this creates a period of heightened legal and political risk. Reinforcing the negative sentiment, the ISM Manufacturing PMI, despite inching up to 48.7, marked the sixth consecutive month of contraction, indicating persistent weakness in the U.S. manufacturing sector. The risk-off tone was evident in sector performance, with the NYSE Arca Steel Index and the Dow Jones U.S. Real Estate Index both falling 1.7%, while defensive assets like gold saw upward movement.

Key Decisions for Investors

• Investors should closely monitor the progression of the tariff case to the Supreme Court, as the October deadline for the appeals court order represents a significant potential catalyst for market volatility and shifts in fiscal policy.
• Given the surge in Treasury yields and broad equity weakness, it is prudent to assess portfolio exposure to interest rate risk and consider a more defensive posture until the uncertainty surrounding U.S. trade policy dissipates.
• Scrutinize holdings in tariff-sensitive sectors like steel and interest-rate-sensitive sectors such as commercial real estate and banking, which demonstrated notable weakness, and pay attention to upcoming economic data for signs of weakness that could amplify the current risk-off sentiment.