S&P 500 Dips as Wall Street Eyes SCOTUS Tariff Rule

On Monday, February 23, 2026, Wall Street is navigating a complex “policy whiplash” after the U.S. Supreme Court struck down a central pillar of the administration’s trade agenda. The S&P 500 fell 0.7% in early trading, while the Dow Jones Industrial Average dropped over 600 points (1.2%), as investors digest a rapid-fire shift in tariff strategy.

The initial relief from Friday’s court ruling—which invalidated “Liberation Day” tariffs—was short-lived. Over the weekend, President Trump pivoted to a new legal framework (Section 122), announcing a 15% global import tax that takes effect tomorrow.

The SCOTUS Pivot: From “Panic” to “Section 122”

The Supreme Court ruled 6–3 that the President lacked the authority under the International Emergency Economic Powers Act (IEEPA) to impose broad trade duties. While this theoretically “voided” billions in tariffs, the market’s reaction is being shaped by the administration’s “Plan B.”

• The 150-Day Surcharge: The new 15% tariff under Section 122 of the Trade Act of 1974 is legally valid for 150 days. This “temporary” measure has reintroduced immediate uncertainty into corporate budgeting.

• The Refund Question: Estimates suggest the government could owe $175 billion in refunds for the voided IEEPA tariffs. However, the President warned on Friday that these refunds could be tied up in litigation for “the next five years,” leaving a massive capital hole on corporate balance sheets.

• Sector Impact:

  • Airlines: Stocks like United and Delta fell over 4% today, compounded by a major Nor’easter that has grounded thousands of flights.

  • Luxury & Tech: European luxury brands and U.S. tech giants initially rallied on Friday but gave back gains today as the new 15% surcharge loomed.

  • Retail: Walmart and Nike are under pressure as analysts warn that the 15% rate will continue to squeeze margins, despite the court victory.

Economic Headwinds: Inflation and Slowing Growth

Market volatility is being further stoked by a “toxic” mix of macro data released late last week:

• GDP Growth: Q4 2025 growth slowed to a 1.4% annual rate, down from 4.4% in Q3.

• The Inflation Gauge: The PCE Price Index (the Fed’s favorite measure) rose to 2.9%, while “Core” inflation hit 3.0%, both exceeding expectations.

• Federal Reserve Signal: Fed officials suggested this morning that the central bank may skip a rate cut in March due to persistent inflation and strong January job gains, despite pressure from the White House for lower rates.