🧭 Big picture first (TL;DR)
Markets would likely react positively in the short term, with the biggest upside in stocks tied to global trade and supply chains. Volatility would drop, inflation expectations would ease, and bond yields would likely fall.
📈 Immediate market reaction (days to weeks)
Stocks: Bullish
If tariffs are struck down or constrained:
- Broad equities up (especially the S&P 500 / Nasdaq)
- Industrials, tech, retailers, and manufacturers rally
- Companies with China/global exposure get relief
Why:
Tariffs = higher costs + margin pressure + uncertainty
Removing them = better earnings visibility + lower input costs
👉 This is a “risk-on” outcome for markets.
Inflation expectations: Down
Tariffs act like a tax on imports.
- Removing them = lower goods inflation
- Markets would price less upward pressure on CPI
- That’s especially bullish if inflation is already trending lower
Bonds & rates: Yields fall
- Lower inflation risk → Treasury yields likely drop
- Rate-cut expectations may move forward
- Bullish for bonds, growth stocks, and rate-sensitive sectors
USD (Dollar): Slightly weaker
- Less trade friction → less need for “safe haven” USD
- Lower yields also weigh on the dollar
- Emerging market currencies may benefit
🏭 Sector-by-sector impact
Big winners
- Tech (hardware, semiconductors, supply-chain heavy names)
- Retail / consumer discretionary
- Industrials
- Transportation & logistics
- Emerging markets
Relative losers
- Domestic-only manufacturers previously protected by tariffs
- Certain steel, aluminum, or niche industrial producers
(But overall market impact still likely positive.)
🧠 Volatility & sentiment
- VIX likely drops
- Reduced policy uncertainty = higher valuation multiples
- Markets prefer clarity, even if they don’t love the politics
This would be seen as institutional guardrails returning, which Wall Street generally likes.
⚠️ Medium-term caveats (important)
This wouldn’t be a straight line up forever.
Things markets would still worry about:
- Could Congress re-impose tariffs legislatively?
- Could a future administration revive them?
- Does the ruling trigger political backlash or retaliation?
So think relief rally, not permanent immunity.
📊 Historical pattern (useful context)
Markets have consistently reacted negatively to:
- New tariffs
- Trade wars
- Retaliation headlines
And positively to:
- Trade de-escalation
- Court or legislative limits on tariff power
- Predictable trade policy
This fits that pattern cleanly.
🧾 Bottom line
If SCOTUS rules against Trump on tariffs:
✅ Stocks: Up
✅ Inflation expectations: Down
✅ Bonds: Up (yields down)
✅ Volatility: Down
⚠️ Politics: Still a longer-term wildcard