Event Study: Trump Inauguration & Equity Indices

We compare US vs. international equity indices around the inauguration using Difference-in-Differences and t-tests. US indices underperform relative to international peers; the effect trends negative and is borderline significant at the 10% level.

Highlights

• Methods: DiD and independent-samples t-test on daily returns.
• Data: Major indices (e.g., S&P 500, Dow, SMI, FTSE 100, CAC 40, SSE Composite).
• Finding: Weaker US performance vs. rest; limited statistical significance.

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