BofA Warns of Market 'Reset' as Geopolitical Shocks Hit Excess Bullishness

The global equity markets are currently navigating a fundamental 'reset,' according to Bank of America’s chief investment strategist, Michael Hartnett. This correction, which has seen the S&P 500 retreat roughly 2.1% in the first week of March 2026, is characterized by a collision between extreme investor optimism and sudden exogenous shocks. Hartnett notes that the market entered this period with 'excess bullishness,' making it particularly vulnerable to external triggers such as the escalating conflict in Iran. This volatility has already erased year-to-date gains, leaving the S&P 500 down approximately 1.5% for 2026 as of March 6.

The current downturn follows a familiar historical pattern of market corrections where external events rattle sentiment just as valuations reach a tipping point. While the major indices have shown significant declines—the Dow Jones Industrial Average fell 3% in a single week—Hartnett argues that the conditions for a sustained rebound are not yet present. Specifically, he points to the continued strength of safe-haven assets. Historically, market resets typically conclude only after the U.S. dollar and oil prices begin to weaken, signaling a return of risk appetite and a stabilization of geopolitical tensions. To date, these assets have remained resilient, suggesting that the 'final piece' of the recovery puzzle is still missing.

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This correction, which has seen the S&P 500 retreat roughly 2.1% in the first week of March 2026, is characterized by a collision between extreme investor optimism and sudden exogenous shocks.

This perspective aligns with recent warnings from Morgan Stanley’s Mike Wilson, who has highlighted the concept of 'dispersion' within the S&P 500. Wilson’s analysis suggests that while the headline index may appear relatively stable compared to historical crashes, many underlying stocks have already experienced severe drawdowns. This internal decay within the index suggests that the broader market is more fragile than the top-line numbers indicate. The overlap between Hartnett’s 'reset' theory and Wilson’s 'dispersion' warning paints a picture of a market undergoing a painful transition where fundamentals are being repriced across the board.