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S&P 500 Could Drop 11% if US-China Trade War Escalates, Says Morgan Stanley

S&P 500 Could Drop 11% if US-China Trade War Escalates, Says Morgan Stanley
Kanika Sharma
Geopolitical Analyst & Editor
Published: Updated: 2 min read
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Morgan Stanley’s chief US equity strategist Michael Wilson has warned that US stock markets could face a significant selloff if trade tensions between the US and China are not resolved before November. He estimates a possible decline of 8% to 11% in the S&P 500.

Why the Market is Vulnerable

Wilson highlighted two main reasons why the market is at risk:

  • High investor exposure: Many investors are heavily invested in US stocks.
  • Elevated valuations: Stock prices are currently high compared to historical averages.

Recent events escalated the risk. On Friday, President Trump announced a threat of 100% tariffs on China and export controls on critical software starting November 1. This caused:

  • S&P 500 to drop 2.7%
  • Nasdaq 100 to fall 3.5%, ending its AI-driven record bull run.

Worst-Case Scenario Forecast

In a worst-case scenario, Wilson predicts the S&P 500 could fall to a range of 5,800 to 6,027 points. Despite this, he remains optimistic about a gradual economic recovery in 2026 if trade tensions eventually ease.

Market Recovery Outlook

Wilson emphasized that the recovery thesis is strong enough to withstand short-term trade escalations, as long as tensions gradually de-escalate. On Monday, index futures rebounded after the White House indicated openness to a deal with Beijing, providing hope for a potential resolution.

Key Takeaways

  • S&P 500 may drop up to 11% if US-China trade war worsens.
  • Nasdaq 100 ended its AI-driven bull run after the trade escalation.
  • Market recovery is expected in 2026 if tensions ease over time.
  • Investors should monitor trade developments closely for short-term risks.
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Kanika Sharma
Geopolitical Analyst & Editor

Kanika Sharma

Kanika Sharma is a Geopolitical Analyst and Editor at BigBreakingWire. She holds a Master's degree in History from the Central University of Punjab, with an academic background in qualitative research, text analysis, and historical frameworks. At BigBreakingWire, she analyzes global trade shifts, international policies, geopolitical developments, semiconductor supply chains, manufacturing policies, and sovereign industrial initiatives. Her work combines historical context with contemporary policy and macroeconomic analysis to explain complex global developments clearly and accurately.

Last reviewed by Kanika Sharma on August 26, 2026

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