Israel-Iran conflict poses three challenges for stocks that could slam market by up to 20%, warns RBC

RBC Capital Markets warns that the Israel-Iran conflict poses three challenges for stocks, potentially leading to a market correction of up to 20%. These challenges include contracting P/E multiples due to rising national security policy uncertainty, damage to investor and consumer sentiment, and the impact of rising oil prices on the Federal Reserve’s inflation outlook, which could limit expected rate cuts. RBC's valuation stress test suggests a fair value for the S&P 500 in the 4,800-5,200 range if inflation reaches 4% and the Fed only cuts rates twice.

Analysis

RBC Capital Markets highlights three significant challenges for equity markets stemming from the Israel-Iran conflict, which could precipitate a market correction of up to 20%. Firstly, rising national security policy uncertainty historically correlates with contractions in S&P 500 price-to-earnings (P/E) multiples; this risk is particularly pertinent as current valuations are above long-term averages and did not significantly cheapen during recent tariff-induced market volatility. Secondly, escalating geopolitical tensions threaten to undermine recovering investor, consumer, and business sentiment, which has been a key catalyst for the recent stock market rally. This could notably dampen enthusiasm for initial public offerings and mergers and acquisitions, with corporate earnings calls likely to reflect these concerns. Thirdly, a material disruption to Middle Eastern oil supply could cause Brent crude prices to spike, thereby complicating the Federal Reserve's inflation outlook and potentially limiting anticipated interest rate cuts, which have been a pillar of market support. RBC's valuation stress test, which assumes Personal Consumption Expenditure (PCE) price index inflation reaches 4%, incorporates only two 25 basis point Federal Reserve rate cuts through the remainder of 2025, and assumes 10-year Treasury yields remain near current levels just below 4.45%, projects a fair value for the S&P 500 in the 4,800-5,200 range by the end of 2025. This is substantially below the S&P 500's recent closing price of 5,977, indicating vulnerability despite the market's apparent resilience, where futures briefly reclaimed the 6,000 mark.

Key Decisions for Investors

• Investors should evaluate their portfolio's exposure to a potential market correction, considering RBC's projection of the S&P 500 falling to the 4,800-5,200 range under specific inflationary and interest rate scenarios, and adjust risk positioning accordingly.
• Closely monitor developments in the Middle East, associated oil price fluctuations (Brent crude), shifts in investor and consumer sentiment surveys, and Federal Reserve communications regarding inflation and future monetary policy, as these will be critical drivers of market performance.
• Re-assess valuation sensitivities within portfolios, as currently elevated P/E multiples on the S&P 500 face a heightened risk of contraction due to increased geopolitical uncertainty, potentially leading to increased market volatility and a retest of early-2025 lows.