Full Breakdown
U.S. Stock Funds Show Resilience Amid Iran Conflict
4/30/2026, 9:39:49 PM
Iran Conflict Triggers Market Volatility but Funds Remain Positive
On February 28, the United States and Israel launched attacks on Iran, initiating a regional war that unsettled global markets. The resulting volatility produced a modest 1.2 percent decline for the first quarter of 2024 in the average domestic U.S. stock mutual fund or exchange-traded fund. After a fragile cease-fire began, the S&P 500 moved back toward its calendar-year starting point.
Background and Immediate Market Response
The attacks on Iran prompted a rapid sell-off in equities and a spike in oil prices. By the following Wednesday, the announcement of a tentative cease-fire coincided with a drop in oil prices and a broad market rally. This rebound lifted investor returns that had been calculated up to the last minute of trading.
Performance Data for Domestic Stock Funds
Morningstar’s final investor-return data show three key figures for the period through March 2024: a 1.2 percent loss in the first quarter for the average domestic stock fund; a 16.8 percent gain over the preceding twelve months; and an eight-percent annualized return over the past five years, a span that includes the high-inflation environment of 2022. These numbers indicate that, relative to the broader market shock, losses were limited and long-term returns remained positive.
Official Data Release
Morningstar, a financial-services firm that aggregates fund performance, supplied the final return figures cited above. The firm’s methodology aggregates returns across domestic stock mutual funds and ETFs, providing a consolidated view of investor outcomes during the conflict period.
Criticism and Limits of the Resilience Argument
The article cautions that the observed resilience is “far from foolproof.” While historical patterns show the U.S. market rebounding after wars, pandemics, and recessions, the current data set does not guarantee similar outcomes for future disruptions. The modest quarterly loss and reliance on corporate-earnings forecasts underscore the conditional nature of the positive performance.
Implications for Investors
The article notes that corporate earnings have provided the glue holding investor returns together and that most earnings forecasts remain strong. It also adds that the record of resilience supports the argument that investors are best off staying invested in the stock market, even when they are troubled by the state of the nation and the world.
Historical Resilience Context
The article notes that since World War II, the U.S. stock market has repeatedly recovered from wars, pandemics, domestic unrest, recessions, inflation and flawed economic policies. Corporate earnings have historically provided the glue for investor returns, and most earnings forecasts remain strong, according to the source.
