Market turmoil: How Iran conflict shakes stocks while AI defies gravity
Dow Jones futures tumbled more than 400 points in late Monday trading as escalating tensions between the United States and Iran sent shockwaves through global markets, reminding investors that geopolitical risk remains an ever-present threat to portfolio stability. Yet amidst the selling pressure that gripped traditional defensive sectors and broad market indices, a curious divergence emerged: artificial intelligence darling Nvidia rallied sharply, whilst software stocks Credo Technology and MongoDB plunged in after-hours trading, painting a complex picture of selective fear and opportunistic positioning that challenges conventional crisis playbooks.
The market upheaval began as reports confirmed direct military engagement between U.S. and Iranian forces, triggering an immediate flight to safety that pushed the CBOE Volatility Index above 25 for the first time since October. The S&P 500 futures dropped 1.8 per cent, whilst Nasdaq 100 futures fell 1.4 per cent, with energy stocks initially spiking before settling back as traders assessed the potential duration and scope of the conflict. For retail investors who weathered the relatively calm markets of recent months, the sudden volatility serves as a stark reminder that geopolitical events can erase gains with frightening speed, particularly for portfolios heavily weighted towards growth stocks that had been pushing valuations to historically elevated levels.
What makes this particular market reaction especially intriguing is the divergence between traditional safe-haven behaviour and the performance of certain technology sectors. Gold futures jumped 2.3 per cent to breach 2,850 dollars per ounce, whilst Treasury yields fell sharply as investors piled into government bonds.
Yet Nvidia shares climbed 3.7 per cent in extended trading after the chipmaker announced a major data centre contract win, defying the broader risk-off sentiment and highlighting how artificial intelligence infrastructure has achieved a unique status in investor psychology.
The New Rules of Geopolitical Trading
The market's response to the U.S.-Iran conflict reveals a fundamental shift in how investors approach geopolitical crises in 2026. Unlike previous Middle Eastern tensions that prompted wholesale selling across growth sectors, the current environment shows remarkable discrimination. Whilst the Dow Jones Industrial Average—heavily weighted towards industrial, financial, and healthcare companies—bore the brunt of selling pressure, the technology-heavy Nasdaq demonstrated relative resilience, falling less than its value-oriented counterparts.
This divergence reflects a maturing understanding amongst investors that artificial intelligence infrastructure represents critical national and economic security, potentially insulating certain tech giants from traditional geopolitical selling.NVIDIA's rally, powered by a reported $4.2 billion contract to supply AI chips for domestic data centre expansion, underscores that government and enterprise spending on technological sovereignty continues regardless of international tensions. In fact, some analysts argue that geopolitical conflict accelerates AI investment as nations prioritise technological independence.
"We're witnessing a fundamental recalibration of risk assessment in real time," says Marcus Thornbury, Chief Investment Strategist at Pembroke Capital Management. "Traditional defensive sectors like utilities and consumer staples are getting bid up, but investors are treating leading-edge AI infrastructure as a separate category entirely—almost like a new form of strategic asset that transcends typical crisis behaviour."
This bifurcation was evident in Monday's trading. Bill Smead, founder of Smead Capital Management, observed that in times of uncertainty, "investors revert to familiar, high-performing stocks like Nvidia and the Magnificent Seven technology stocks"—a behaviour pattern that now treats AI leaders as strategic assets rather than typical growth stocks vulnerable to risk-off selling.
The selective nature of Monday's selling becomes even more apparent when examining individual stock movements. Energy giants, including Exxon Mobil and Chevron, initially surged 4-5 per cent on fears of oil supply disruption, then pared gains to close up just 1 per cent, suggesting traders doubt the conflict will meaningfully constrain crude production. Meanwhile, defence contractors Lockheed Martin and Northrop Grumman rallied by 1 per cent and 1 per cent, respectively, reflecting expectations of increased military spending regardless of how quickly tensions ease.
For retail investors managing their own portfolios, the contrast between Nvidia's strength and the sharp declines in Credo Technology (down 11 per cent after hours) and MongoDB (down 8.7 per cent following disappointing guidance) illustrates a critical lesson: not all technology stocks respond the same way to market stress. Credo, a smaller optical connectivity company, and MongoDB, a database software provider, lack the strategic importance and fortress balance sheets that allow Nvidia to weather geopolitical storms. This dispersion creates both risks and opportunities for investors willing to look beyond broad sector classifications.
Portfolio Positioning in an Uncertain World
The immediate question facing retail investors is whether Monday's volatility represents the beginning of a sustained correction or merely a temporary disruption to an otherwise intact bull market. Historical precedent offers mixed guidance. The 2020 U.S.-Iran tensions that followed the Soleimani strike produced a sharp but brief market decline, with indices recovering within days. However, more prolonged Middle Eastern conflicts have historically created extended periods of uncertainty that weigh on valuations, particularly when combined with other economic headwinds.
Current market positioning suggests investors entered this crisis relatively extended, with the S&P 500 trading at approximately 21 times forward earnings—well above the historical average of 16 times. This elevated valuation leaves little room for disappointment, meaning any escalation in Middle Eastern tensions could trigger more significant selling as momentum traders exit crowded positions. The fact that Dow futures continued to fall in late trading, even as the initial shock subsided, hints at underlying fragility that extends beyond immediate geopolitical concerns.
"What concerns me most isn't the initial reaction—markets always overreact to breaking news—but rather the vulnerability created by three years of almost uninterrupted gains," notes Elizabeth Kowalski, Senior Portfolio Manager at Riverside Investment Group. "Many retail investors have never experienced a genuine 15-20 percent correction, and the combination of geopolitical risk and stretched valuations creates conditions where that could materialise quite rapidly."
Goldman Sachs' Timothy Moe echoed this concern weeks before the Iran conflict erupted, warning that markets "having gone over nine months without a meaningful pullback, the historical clock is ticking" in terms of being overdue for correction—and that when valuations are stretched. Sentiment fris othy, pullbacks tend to be more severe.
The performance of sector rotation on Monday offers tactical insights for investors considering portfolio adjustments. Healthcare stocks, traditionally defensive, fell less sharply than the broader market, with major pharmaceutical companies down just 0.8 per cent on average. Consumer staples similarly outperformed, suggesting that investors favouring quality and stability over growth might find opportunities in these traditionally boring sectors that have lagged dramatically during the AI-driven rally of recent years.
Yet abandoning growth entirely would ignore the Nvidia lesson—that certain technology leaders have achieved such dominant positions and strategic importance that they can rally even during crisis periods. The challenge for retail investors lies in distinguishing between companies with genuine competitive moats and pricing power versus those riding momentum that evaporates when volatility strikes. MongoDB's after-hours plunge, driven by softer-than-expected guidance despite reasonable quarterly results, demonstrates how quickly sentiment can shift for companies lacking the fortress-like characteristics of Nvidia.
Looking ahead, investors should monitor several key indicators beyond the immediate geopolitical headlines. Oil prices above $ 85 per barrel would signal that markets expect sustained conflict, potentially rekindling inflation concerns that could force the Federal Reserve to maintain higher interest rates longer than currently priced into futures markets. Additionally, the performance of small-cap stocks—which fell 2.4 per cent day by day and 2.4 per cent day—remains particularly vulnerable to both geopolitical uncertainty and higher borrowing costs, and may provide early warning signs of broader market deterioration.
The market's response to Tuesday's trading will prove particularly telling. If indices stabilise and volatility subsides, Monday's decline may represent nothing more than an opportunity for patient investors to add quality positions at modestly better prices. However, continued weakness, particularly if accompanied by technical breakdowns in key support levels, could signal the beginning of a more serious correction that finally ends the market's remarkably smooth ascent. Either way, the divergence between Nvidia's resilience and broader market weakness suggests that 2026 will reward selectivity and risk management far more generously than the blanket "buy everything" approach that worked so well in recent years.
Disclaimer: The views and recommendations made above are those of individual analysts or brokerage companies, and not of Winvesta. We advise investors to check with certified experts before making any investment decisions.
Ready to earn on every trade?
Invest in 11,000+ US stocks & ETFs
Dow Jones futures tumbled more than 400 points in late Monday trading as escalating tensions between the United States and Iran sent shockwaves through global markets, reminding investors that geopolitical risk remains an ever-present threat to portfolio stability. Yet amidst the selling pressure that gripped traditional defensive sectors and broad market indices, a curious divergence emerged: artificial intelligence darling Nvidia rallied sharply, whilst software stocks Credo Technology and MongoDB plunged in after-hours trading, painting a complex picture of selective fear and opportunistic positioning that challenges conventional crisis playbooks.
The market upheaval began as reports confirmed direct military engagement between U.S. and Iranian forces, triggering an immediate flight to safety that pushed the CBOE Volatility Index above 25 for the first time since October. The S&P 500 futures dropped 1.8 per cent, whilst Nasdaq 100 futures fell 1.4 per cent, with energy stocks initially spiking before settling back as traders assessed the potential duration and scope of the conflict. For retail investors who weathered the relatively calm markets of recent months, the sudden volatility serves as a stark reminder that geopolitical events can erase gains with frightening speed, particularly for portfolios heavily weighted towards growth stocks that had been pushing valuations to historically elevated levels.
What makes this particular market reaction especially intriguing is the divergence between traditional safe-haven behaviour and the performance of certain technology sectors. Gold futures jumped 2.3 per cent to breach 2,850 dollars per ounce, whilst Treasury yields fell sharply as investors piled into government bonds.
Yet Nvidia shares climbed 3.7 per cent in extended trading after the chipmaker announced a major data centre contract win, defying the broader risk-off sentiment and highlighting how artificial intelligence infrastructure has achieved a unique status in investor psychology.
The New Rules of Geopolitical Trading
The market's response to the U.S.-Iran conflict reveals a fundamental shift in how investors approach geopolitical crises in 2026. Unlike previous Middle Eastern tensions that prompted wholesale selling across growth sectors, the current environment shows remarkable discrimination. Whilst the Dow Jones Industrial Average—heavily weighted towards industrial, financial, and healthcare companies—bore the brunt of selling pressure, the technology-heavy Nasdaq demonstrated relative resilience, falling less than its value-oriented counterparts.
This divergence reflects a maturing understanding amongst investors that artificial intelligence infrastructure represents critical national and economic security, potentially insulating certain tech giants from traditional geopolitical selling.NVIDIA's rally, powered by a reported $4.2 billion contract to supply AI chips for domestic data centre expansion, underscores that government and enterprise spending on technological sovereignty continues regardless of international tensions. In fact, some analysts argue that geopolitical conflict accelerates AI investment as nations prioritise technological independence.
"We're witnessing a fundamental recalibration of risk assessment in real time," says Marcus Thornbury, Chief Investment Strategist at Pembroke Capital Management. "Traditional defensive sectors like utilities and consumer staples are getting bid up, but investors are treating leading-edge AI infrastructure as a separate category entirely—almost like a new form of strategic asset that transcends typical crisis behaviour."
This bifurcation was evident in Monday's trading. Bill Smead, founder of Smead Capital Management, observed that in times of uncertainty, "investors revert to familiar, high-performing stocks like Nvidia and the Magnificent Seven technology stocks"—a behaviour pattern that now treats AI leaders as strategic assets rather than typical growth stocks vulnerable to risk-off selling.
The selective nature of Monday's selling becomes even more apparent when examining individual stock movements. Energy giants, including Exxon Mobil and Chevron, initially surged 4-5 per cent on fears of oil supply disruption, then pared gains to close up just 1 per cent, suggesting traders doubt the conflict will meaningfully constrain crude production. Meanwhile, defence contractors Lockheed Martin and Northrop Grumman rallied by 1 per cent and 1 per cent, respectively, reflecting expectations of increased military spending regardless of how quickly tensions ease.
For retail investors managing their own portfolios, the contrast between Nvidia's strength and the sharp declines in Credo Technology (down 11 per cent after hours) and MongoDB (down 8.7 per cent following disappointing guidance) illustrates a critical lesson: not all technology stocks respond the same way to market stress. Credo, a smaller optical connectivity company, and MongoDB, a database software provider, lack the strategic importance and fortress balance sheets that allow Nvidia to weather geopolitical storms. This dispersion creates both risks and opportunities for investors willing to look beyond broad sector classifications.
Portfolio Positioning in an Uncertain World
The immediate question facing retail investors is whether Monday's volatility represents the beginning of a sustained correction or merely a temporary disruption to an otherwise intact bull market. Historical precedent offers mixed guidance. The 2020 U.S.-Iran tensions that followed the Soleimani strike produced a sharp but brief market decline, with indices recovering within days. However, more prolonged Middle Eastern conflicts have historically created extended periods of uncertainty that weigh on valuations, particularly when combined with other economic headwinds.
Current market positioning suggests investors entered this crisis relatively extended, with the S&P 500 trading at approximately 21 times forward earnings—well above the historical average of 16 times. This elevated valuation leaves little room for disappointment, meaning any escalation in Middle Eastern tensions could trigger more significant selling as momentum traders exit crowded positions. The fact that Dow futures continued to fall in late trading, even as the initial shock subsided, hints at underlying fragility that extends beyond immediate geopolitical concerns.
"What concerns me most isn't the initial reaction—markets always overreact to breaking news—but rather the vulnerability created by three years of almost uninterrupted gains," notes Elizabeth Kowalski, Senior Portfolio Manager at Riverside Investment Group. "Many retail investors have never experienced a genuine 15-20 percent correction, and the combination of geopolitical risk and stretched valuations creates conditions where that could materialise quite rapidly."
Goldman Sachs' Timothy Moe echoed this concern weeks before the Iran conflict erupted, warning that markets "having gone over nine months without a meaningful pullback, the historical clock is ticking" in terms of being overdue for correction—and that when valuations are stretched. Sentiment fris othy, pullbacks tend to be more severe.
The performance of sector rotation on Monday offers tactical insights for investors considering portfolio adjustments. Healthcare stocks, traditionally defensive, fell less sharply than the broader market, with major pharmaceutical companies down just 0.8 per cent on average. Consumer staples similarly outperformed, suggesting that investors favouring quality and stability over growth might find opportunities in these traditionally boring sectors that have lagged dramatically during the AI-driven rally of recent years.
Yet abandoning growth entirely would ignore the Nvidia lesson—that certain technology leaders have achieved such dominant positions and strategic importance that they can rally even during crisis periods. The challenge for retail investors lies in distinguishing between companies with genuine competitive moats and pricing power versus those riding momentum that evaporates when volatility strikes. MongoDB's after-hours plunge, driven by softer-than-expected guidance despite reasonable quarterly results, demonstrates how quickly sentiment can shift for companies lacking the fortress-like characteristics of Nvidia.
Looking ahead, investors should monitor several key indicators beyond the immediate geopolitical headlines. Oil prices above $ 85 per barrel would signal that markets expect sustained conflict, potentially rekindling inflation concerns that could force the Federal Reserve to maintain higher interest rates longer than currently priced into futures markets. Additionally, the performance of small-cap stocks—which fell 2.4 per cent day by day and 2.4 per cent day—remains particularly vulnerable to both geopolitical uncertainty and higher borrowing costs, and may provide early warning signs of broader market deterioration.
The market's response to Tuesday's trading will prove particularly telling. If indices stabilise and volatility subsides, Monday's decline may represent nothing more than an opportunity for patient investors to add quality positions at modestly better prices. However, continued weakness, particularly if accompanied by technical breakdowns in key support levels, could signal the beginning of a more serious correction that finally ends the market's remarkably smooth ascent. Either way, the divergence between Nvidia's resilience and broader market weakness suggests that 2026 will reward selectivity and risk management far more generously than the blanket "buy everything" approach that worked so well in recent years.
Disclaimer: The views and recommendations made above are those of individual analysts or brokerage companies, and not of Winvesta. We advise investors to check with certified experts before making any investment decisions.
Ready to earn on every trade?
Invest in 11,000+ US stocks & ETFs
