Morgan Stanley argues the central question for the U.S. economy in 2026 is whether trade flows will continue distorting quarterly GDP readings or if the volatility following 'Liberation Day' has subsided. The bank notes trade swings were a major factor in 2025, subtracting 4.7 percentage points from Q1 GDP, adding 4.8pp in Q2, and contributing another 1.6pp in Q3. Trade should be a smaller determinant of real GDP growth in 2026 than in 2025, according to the firm's analysis. Morgan Stanley highlights that while computer imports remain robust due to AI spending and pharmaceuticals surged in 2025 due to tariff fears, these factors may be receding. Excluding special factors like nonmonetary gold flows, the bank sees import volumes potentially slowing due to protectionism. This means GDP could provide a clearer signal in 2026, reducing its current status as a 'noisy' indicator.

Morgan Stanley's view suggests 2026 GDP growth may be less volatile than recent quarters, offering a more reliable gauge of the economy's health. The bank's focus on specific import components like AI-driven computer purchases and the fading impact of tariff-related surges underscores the nuanced factors influencing trade's role. This analysis implies investors should look beyond headline trade numbers for a truer picture of U.S. economic momentum next year.

The core debate revolves around whether the post-'Liberation Day' trade turbulence is fully resolved or if its effects will continue to muddy quarterly GDP figures, potentially obscuring underlying economic trends for the remainder of 2026.