Historic Market Reference (2017–2021)
Event-level market reactions during Donald Trump's first presidency, Dow Jones Industrial Average, U.S. Dollar Index, and 10-year Treasury yield.
What does this reference page cover?
This page archives first-term (2017–2021) market moves tied to major presidential actions. It uses the same indices and before/after methodology as the original site build. For second-term quarterly data (Q2 2025–Q1 2026), see the Markets section on the home page.
Figures show session or next-session changes around each event date. Percent changes are rounded; Treasury moves are in basis points (bp).
How did markets react to key first-term decisions?
Financial markets responded to major Trump administration actions with measurable shifts in the Dow Jones Industrial Average, the U.S. Dollar Index (DXY), and the 10-year Treasury yield. The table lists before-and-after levels and percent changes for five documented events.
| Date | Event | Stock Market (Dow) | Change | Dollar Index | Change | 10Y Treasury Yield | Change |
|---|---|---|---|---|---|---|---|
| Jan 20, 2017 | Inauguration | 19,827.25 → 20,093.78 | +1.34% | 101.18 → 100.74 | −0.44% | 2.48% → 2.46% | −2 bp |
| Jan 23, 2017 | TPP Withdrawal | 19,827.25 → 19,799.85 | −0.14% | 100.74 → 100.23 | −0.51% | 2.46% → 2.41% | −5 bp |
| Dec 22, 2017 | Tax Cuts and Jobs Act | 24,782.29 → 25,075.13 | +1.18% | 93.35 → 92.83 | −0.56% | 2.48% → 2.58% | +10 bp |
| May 8, 2018 | Iran Nuclear Deal Withdrawal | 24,357.32 → 24,542.54 | +0.76% | 92.57 → 93.24 | +0.72% | 2.95% → 3.01% | +6 bp |
| Jan 15, 2020 | Phase One Trade Deal with China | 28,939.67 → 29,348.10 | +1.41% | 97.08 → 97.54 | +0.47% | 1.78% → 1.84% | +6 bp |
Inauguration, Dow
+1.34%
Tax Cuts, Dow
+1.18%
China Trade Deal, Dow
+1.41%
TPP Withdrawal, Dow
−0.14%
How was this data compiled?
Each row pairs a documented first-term policy event with market levels immediately before and after the event window, using the same three benchmarks as the original chronicle build:
- Dow Jones Industrial Average: closing levels (S&P Dow Jones Indices)
- U.S. Dollar Index (DXY): ICE U.S. Dollar Index
- 10-year Treasury yield: U.S. Treasury constant maturity, via FRED DGS10
Related context: First presidency timeline (2017–2021) · Trade history
Where are current second-term market figures?
Quarter-end market summaries for Q2 2025 through Q1 2026 (second Trump term) are on the home page Markets section, using the same index definitions and static HTML format for Cloudflare Pages.