Stock Markets March 1, 2026

Barclays Urges Patience: Wait for a Double-Digit S&P 500 Slide Before Buying the Dip

Operation Shield of Judah and subsequent regional strikes raise tail-risk concerns; strategists split on near-term market reaction

By Priya Menon
Barclays Urges Patience: Wait for a Double-Digit S&P 500 Slide Before Buying the Dip

Global markets opened under pressure after Operation Shield of Judah - a pre-emptive strike on Iran by the United States and Israel - triggered immediate Iranian missile strikes across the region. While some analysts view the market effects as likely short-lived, Barclays advises investors not to buy an immediate dip and to consider purchases only after a meaningful correction in the S&P 500 of roughly 10%.

Key Points

  • Operation Shield of Judah - a joint United States-Israel pre-emptive strike on Iran - prompted Iranian missile strikes at U.S. bases and allied targets, with explosions reported in Dubai, Riyadh, Abu Dhabi, Bahrain and Kuwait.
  • Some strategists, including Vital Knowledge's Adam Crisafulli, say the market impact of such geopolitical episodes has historically been short-lived for U.S. equities.
  • Barclays' Ajay Rajadhyaksha advises against buying an immediate dip; he recommends waiting for a larger correction - roughly a 10% fall in the S&P 500 - before re-entering the market.

Global equity markets prepared for a turbulent start after the United States and Israel carried out Operation Shield of Judah, described as a pre-emptive strike on Iran. The operation prompted swift retaliation: Iran launched missiles at U.S. bases and allied targets, with explosions reported in Dubai, Riyadh, Abu Dhabi, Bahrain and Kuwait.

Officials said the opening operation resulted in the death of Iran's Supreme Leader Ayatollah Ali Khamenei. Israeli authorities also identified several senior figures killed in the initial wave, including Defense Minister Aziz Nasirzadeh, Security Council chief Ali Shamkhani and IRGC Commander Mohammad Pakpour.

Market strategists offered differing views on how equities might react. Adam Crisafulli of Vital Knowledge noted historical patterns in recent years, arguing that similar episodes of pronounced geopolitical tension have tended to produce only brief disruptions for U.S. stocks. "As has been the case for the last several years, through multiple instances of ostensibly substantial geopolitical strife, the impact on U.S. equities is usually ephemeral, and there’s no reason to believe this will be any different," Crisafulli said.

Ajay Rajadhyaksha, Barclays Global Head of Research, took a more guarded stance. He suggested that Iran "may lack the ability to sustain a military campaign," and that the barrage of missiles could be intended principally for domestic audiences by "showing resolve without crossing a threshold that demands further retaliation by the U.S."

Despite the possibility that the conflict will remain limited, Rajadhyaksha emphasized that the risk environment has changed and that the chance of a wider conflagration is higher than in recent years. He advised against immediate buying on market weakness, pointing to historical behavior around geopolitical shocks. "History argues strongly in favor of selling geopolitical risk premium when hostilities start," he said.

On tactical positioning, Barclays counseled restraint. "We would recommend not buying any immediate dip - the risk-reward doesn’t seem compelling. If equities pull back enough (say over 10% in the S&P500), there is likely to come a time to buy. But not yet," Rajadhyaksha concluded.

For investors, the competing assessments underscore a difficult decision: some data points and past episodes suggest markets can be resilient in the face of geopolitical flare-ups, while elevated tail risk argues for caution in committing capital until uncertainty abates or valuations adjust materially.


Context

The immediate military and political developments described above have produced a heightened risk backdrop for global markets and for investors assessing near-term exposure to equities.

What to watch

  • Whether hostilities escalate beyond the current exchanges or remain contained.
  • Market volatility and whether U.S. equities register a sustained pullback of around 10% from recent levels.
  • Investor behavior in the days following the strikes, including flows into and out of risk assets.

Risks

  • Higher tail risk of a broader regional or wider conflagration, which could extend market volatility and affect investor sentiment - this risk affects global equities and risk-sensitive asset classes.
  • Markets may be underpricing the chance that tensions fail to cool, creating the potential for a deeper-than-expected correction in equity prices - this uncertainty impacts equities and portfolio risk management decisions.
  • While Iran "may lack the ability to sustain a military campaign," the current missile strikes could be aimed at domestic audiences by "showing resolve without crossing a threshold that demands further retaliation by the U.S.", which leaves outcomes uncertain and could influence defense and geopolitical risk assessments.

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