Like a swinging pendulum, Wall Street strategists and equity investors are reverting to a traditional playbook centered on one core belief: market declines triggered by sudden geopolitical conflicts almost always present good buying-on-the-dip opportunities. However, this classic stock market strategy is becoming increasingly perilous against the significant threat of international oil prices potentially surging to $100 per barrel. This time, there is a major caveat: if the geopolitical confrontation involving the US, Israel, and Iran persists, the global oil benchmark—Brent crude—could well rise to around $100 per barrel for a sustained period, thereby choking the US economy, which has long been driven by consumer spending. As long as oil prices remain below the $100 threshold, any pullback in global equities, including US stocks, might still be viewed as a shallow, repairable shakeout, and the buy-the-dip strategy will likely prevail. But if the risks surrounding the Strait of Hormuz push oil into triple digits, the combined pressures of inflation, interest rates, and weakened consumption could render the old script of "buying the dip in US stocks" completely ineffective.
Although a sustained rise to $100 is not yet the consensus among oil analysts, it has emerged as a significant potential risk factor that stock market bulls are now considering. A persistent spike in energy costs would not only threaten the trajectory of consumer spending growth but could also rekindle inflation and push interest rates higher again. This market narrative played out in real-time during Monday's trading: US Treasury bonds, long considered classic safe-haven assets, failed to serve their traditional role during a period of high geopolitical tension. Instead, yields rose sharply due to renewed inflation fears and concerns that the Federal Reserve might pivot back to hiking rates in response to higher prices.
"If elevated oil prices persist for an extended period, inflation concerns will likely begin to build. This would act as a large, unexpected tax on consumers, a problem the Fed does not need as President Trump pressures for rate cuts," wrote Jay Woods, Chief Global Strategist at Freedom Capital Markets, in a report.
On the first trading day following the attack on Iran and its subsequent military responses, the stock market's decline proved short-lived. The S&P 500 fell as much as 1.2% shortly after the open but subsequently recovered its losses, trading essentially flat by midday and closing with a marginal gain of 0.04%. West Texas Intermediate (WTI) crude surged as much as 12% to $75.33 per barrel before paring half of those gains and trading near $71. Brent crude rose 7.4% on Monday to settle at $77.85 per barrel.
Historical data suggests that US stocks have struggled significantly when the global oil benchmark breaches $100. However, the escalation of Middle East geopolitical tensions is impacting a US stock market where traders were already growing cautious due to worries about AI disruption across traditional industries and emerging cracks in credit markets.
According to top Wall Street firms like Goldman Sachs, the market is currently in a phase with a high probability of first experiencing a corrective shakeout before attempting a decisive break above 7,000 points, paving the way for a new bull market leg. After a recent failed attempt to surpass 7,000, the "Anthropic storm" that battered software stocks continues to reverberate globally—the panic-selling sentiment driven by fears of "AI disruption" persists. Combined with volatile fund flows and geopolitical risks, this makes the S&P 500 susceptible to a near-term "painful path."
A sharp oil price surge to $100 or above could plunge US stocks into a major correction scenario. Analysts at Bloomberg Intelligence note that historically, equity markets only become truly troubled when oil prices rise above $100 per barrel. They add that since 1983, the S&P 500 has averaged a decline of 1.6% in the year following periods when oil traded above $100. Some Wall Street analysts have incorporated this price level into their models, anticipating it if the Strait of Hormuz were to be closed for an extended period. "This is the only price range we've studied that correlates negatively with future returns; beyond that, it also holds a certain psychological significance as a barrier," stated strategist Nathaniel Welnhofer.
The equity strategy team at Morgan Stanley, led by Michael Wilson, also views $100 per barrel oil—representing a 75% to 100% year-on-year price increase—as a potential condition for a bear market scenario in global equities. They add that the economy would likely need to be in a late-cycle phase for this scenario to gain higher probability. Wilson's team wrote, "We are currently in an early-cycle environment where corporate earnings recovery is accelerating." In Wilson's view, a "long-term bear market scenario" related to the weekend's Iran and Middle East events primarily materializes if oil prices rise significantly and sustainably, threatening the continuity of the business cycle. The historical threshold provided by this chief equity strategist requires two conditions to be met simultaneously: first, a 75% to 100% year-on-year surge in oil prices, and second, the shock occurring during the late stage of an economic growth cycle. The absence of either condition makes it more likely that a geopolitical event evolves into a temporary correction rather than a structural downturn.
Wilson asserts that current market conditions do not fit this "high-risk combination," describing the present as an "early-cycle environment" with accelerating earnings recovery and noting that "multiple synergistic drivers" are facilitating a rolling cyclical recovery in the US stock market. Morgan Stanley characterizes 2026 as a "broad-based equity bull market under a rolling recovery," advocating for a return of market risk appetite "from points to sectors" and simultaneous cyclical sector rallies, led by cyclical stocks in the bull market's second phase. Wilson maintains a year-end target of 7,800 for the S&P 500. Similar to Goldman Sachs, Morgan Stanley also believes US stocks might undergo a significant downward adjustment due to a combination of negative factors—geopolitical turmoil, tariff disputes, and the pessimistic market tone surrounding "AI disruption"—before achieving a stronger bull market trajectory.
Conversely, there is reason to believe that the US economy, now the world's largest oil producer and heavily driven by the tech sector, is better positioned to withstand a global oil price shock than it was decades ago. So far, the oil price increase has not pushed crude near the $100 level that worries stock market bulls. "In today's US economy, an oil price spike does not pose the same magnitude of significant downside risk to overall economic growth or inflation as it did half a century ago," said Joseph Brusuelas, Chief Economist at RSM US. He added that he believes oil would need to reach the $120 to $130 per barrel range to cause a substantial pullback in consumer spending and potentially rekindle inflation. "For now, the early price action in energy markets does not appear to pose any material risk to the US growth or inflation outlook."
The entire bull market logic hinges significantly on how long the military conflict between the US/Israel and Iran persists, and crucially, the duration of any disruption to crude oil shipments through the Strait of Hormuz. Approximately one-fifth of the world's oil consumption transits this strait. According to Bloomberg Intelligence, a prolonged closure of the strait by Iran could replay the oil shocks seen during the 1973 Arab oil embargo and the 1979 Iranian Revolution. The strategists added that the 1973 embargo triggered a stagflationary global recession, with the S&P 500 falling at an annualized rate of 29%; the second crisis coincided with a recession in 1980, yet the S&P 500 still recorded an annualized gain of 11.3%.
US Defense Secretary Pete Hegseth dismissed notions of an "endless" geopolitical war with Iran, even as US-led airstrikes continued for a third day on Monday. President Donald Trump stated in a media interview that the operation was progressing "slightly ahead of schedule," whereas he had initially anticipated it lasting four weeks.
At least in the near term, global equity traders will be intensely focused on a 100-mile-long "chokepoint for global energy" connecting the Persian Gulf and the Gulf of Oman. On Monday, the S&P 500 closed virtually unchanged, staging a significant rebound from its earlier sharp decline. Traders continue to weigh the potential financial market implications of the escalating Middle East conflict, which already triggered a rapid surge in the Brent crude benchmark.
Due to the near-halt of crude oil and LNG (liquefied natural gas) shipping through the Strait of Hormuz, coupled with production disruptions at a major Saudi Arabian refinery, energy markets faced severe supply-side shocks, causing oil prices to jump. While a sharp oil price increase disrupts risk appetite, historically, US stocks have often posted positive returns one month after an initial sell-off following a major single-day oil spike. This suggests a pattern of near-term pressure followed by recovery is more aligned with the current market structure than a "direct, uninterrupted break above 7,000 points."
Ultimately, what will determine whether US stocks can resume their strong bull trend after a correction is not the conflict headlines themselves, but whether the oil price shock is sustained, whether Hormuz shipping faces long-term disruption, and whether the resulting inflation/interest rate expectations deteriorate persistently. "If Iran deploys sea mines, fast-attack craft, or drone swarms to restrict commercial passage—even partially and temporarily—the impact on energy prices would be severe and immediate. This is the scenario we are watching most closely, as it's the one that transforms a geopolitical event into a direct global economic shock," said Adrian Helfert, Chief Investment Officer of Multi-Asset Strategies at Westwood Management, in a report.