Fragmentation, Momentum, and Trade Re-Routing: US–China Export Dynamics Under Policy Uncertainty (Q1–Q3 2025)

Date: January 2026

Tools Used: SQL, Excel, Tableau

Context: Self‑Initiated Analytical Case Study 

GitHub

Executive Summary

This report examines monthly export dynamics for the United States and China during Q1–Q3 2025, using IMF International Merchandise Trade Statistics. The analysis evaluates export momentum, volatility, partner‑level divergence, and emerging signals of trade re‑routing amid heightened policy uncertainty. Conducted in the context of Davos 2026, unstable US tariff policy, and Mark Carney’s remarks on global economic fragmentation, the findings highlight asymmetric export trajectories, uneven partner exposure, and early indications of trade diversion. These insights inform how geopolitical uncertainty is reshaping global trade flows rather than suppressing them uniformly.

Context & Business Question

Global trade in 2025 operated under elevated uncertainty driven by shifting tariff regimes, geopolitical realignment, and renewed industrial policy activism. Discussions at Davos 2026, including Mark Carney’s emphasis on fragmentation and resilience over efficiency, reinforced concerns that global trade is entering a structurally different phase. 

Against this backdrop, this analysis asks: how did US and Chinese exports evolve during 2025, and do the data suggest stabilisation, volatility, or re‑routing across advanced and emerging trade partners?

Data & Methodology

The analysis uses the IMF International Merchandise Trade Statistics (IMTS) monthly export data covering January to September 2025. Values are reported in nominal USD millions. Q4 data was not available at the time of analysis and is explicitly excluded. SQL was used to aggregate monthly exports, compute growth differentials, assess volatility, and compare bilateral trade patterns. Visualisations were produced to support temporal, partner‑level, and comparative analysis.

Key Insights

Export momentum diverged sharply between the US and China in mid‑2025

Between April and September 2025, cumulative export growth for the United States exceeded that of China, indicating stronger late‑period momentum. Average monthly gains during Q2–Q3 were higher for the US, while China’s growth softened toward late summer. This divergence suggests differential sensitivity to policy expectations rather than uniform global demand shifts.

China’s exports exhibited higher short‑term volatility than US exports

Month‑to‑month changes reveal a wider volatility range for China, reflecting larger swings between peak and trough monthly growth. In contrast, US exports followed a narrower band of variation, indicating greater short‑term predictability. This stability advantage may be relevant for firms prioritising supply chain reliability under policy uncertainty.

Advanced‑economy partners drove a disproportionate share of US export gains

Exports to advanced economies—specifically the EU, Japan, and the UK— accounted for a larger share of US export growth compared with China. Growth to emerging partners such as India and Mexico was more evenly distributed. This pattern aligns with early signs of trade re‑routing toward politically aligned markets.

Bilateral stagnation signals emerged despite aggregate growth

Several bilateral export relationships experienced stagnation or decline between January and September 2025. These instances suggest that aggregate export growth masked partner‑specific weaknesses, potentially linked to tariff uncertainty or shifting sourcing strategies.

Evidence of selective trade diversion appeared across key partners

For certain counterpart countries, US exports increased while Chinese exports declined, producing a directional trade diversion signal. These patterns were not universal but indicate early reallocation of trade flows consistent with fragmentation narratives discussed at Davos 2026.

Analysis & Deep Dives

A deeper examination of month‑to‑month changes highlights turning points in mid‑2025, particularly around late Q2. These inflection points coincide with heightened policy rhetoric and tariff uncertainty. While causality cannot be inferred, timing alignment strengthens the case for policy‑driven trade behaviour.

Recommendations / Implications

• Monitor partner‑level trade dynamics rather than aggregate export figures when assessing exposure to fragmentation.

• Incorporate export volatility metrics into supply chain risk assessments.

• Track advanced‑economy trade flows as early indicators of geopolitical alignment effects.

• Use monthly momentum measures to identify early inflexion points under policy uncertainty.

Limitations & Assumptions

The analysis is limited to Q1–Q3 2025 due to data availability. Export values are nominal and not adjusted for price effects. Partner group classifications are simplified and may not capture heterogeneity within groups.