Investors are misreading news about the Iran war, analysts say as markets whipsaw

CNBC | April 20, 2026 at 01:49 PM UTC
Bearish 90% Confidence Unanimous Agreement
Read Original Article

Key Points

  • The S&P 500 gained 4.5% and Nasdaq surged 7.2% last week on ceasefire optimism, but markets reversed on Monday after the Strait of Hormuz reclosed following its brief Friday reopening
  • The Strait of Hormuz carries 20% of the world's oil and gas supply, and its sustained reopening is critical for any lasting stock market recovery according to analysts
  • Deutsche Bank warns of a 2022-style scenario when the S&P 500 rallied over 10% in early weeks of the Ukraine war on settlement hopes, only to ultimately fall 19% for the year

AI Summary

Market Summary: Iran Conflict Creates Whipsaw Conditions

Analysts warn investors are misinterpreting developments in the Iran conflict, leading to volatile market swings as optimism may be misplaced.

Key Market Movements:

  • S&P 500 gained 4.5% last week; Nasdaq Composite surged 7.2%
  • Nasdaq posted 13th consecutive winning session Friday, matching a streak unseen since 1992
  • Global equities reversed Monday as optimism faded

Critical Developments:

The Strait of Hormuz—through which 20% of global oil and gas flows—briefly reopened Friday, sparking market rallies. Iran announced its closure again the following day, erasing gains. A two-week U.S.-Iran ceasefire agreed April 7 expires Tuesday, with uncertainty around extension.

Analyst Warnings:

BCA Research's Matt Gertken cautioned that unlike Trump's "liberation day" tariff tactics, the president lacks full control over Middle East events. Iran maintains a "higher pain threshold" after being attacked, limiting Trump's ability to de-escalate at will.

Deutsche Bank drew parallels to early 2022, when misplaced optimism about Russia-Ukraine peace negotiations preceded significant declines. The S&P 500 fell 25% from January peak to October trough that year, finishing down 19%—the worst performance since 2008.

Investment Outlook:

Orbis Investment Management's Patrick O'Donnell noted markets are taking a "glass half full" view, warning the conflict will have "quite a long-lasting effect" on the global economy. BCA advised investors to avoid complacency over a 12-month horizon, particularly as Trump faces election-year pressures and has yet to secure guarantees on Iran's nuclear capabilities—a key White House objective.

Sustained stock recovery depends on uninterrupted energy flows resuming through the strategic strait.

Model Analysis Breakdown

Model Sentiment Confidence
GPT-5-mini Bearish 90%
Claude 4.5 Haiku Bearish 85%
Gemini 2.5 Flash Bearish 95%
Consensus Bearish 90%