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Breaking2026-03-28

US-Iran War Escalation Sends Dow, Nasdaq Into Correction

The US-Iran military conflict intensified, sending all three major US indices sharply lower. The Dow and Nasdaq entered correction territory while the S&P 500 fell 1.67% to close at 6,369. The VIX fear index surged past 31.

관리자

On March 27, 2026, US equities plunged across the board as the US-Iran military conflict escalated sharply. The Dow Jones Industrial Average fell 1.73% to close at 45,167, officially joining the Nasdaq in correction territory. The S&P 500 dropped 108 points (-1.67%) to 6,369, while the Nasdaq 100 declined 1.93% to 23,133. The VIX fear index surged over 13% past the 31 level, reflecting extreme market anxiety.

Iran Infrastructure Strikes Fuel Full-Scale War Fears

Reports of US strikes on Iranian energy and steel infrastructure intensified investor fears. Secretary of State Rubio stated the military operation would conclude within weeks rather than months, but markets focused more on potential further escalation. G7 foreign ministers issued an emergency statement demanding an end to civilian attacks, while Gulf states pushed for degradation of Iran's military capabilities beyond a simple ceasefire, suggesting diplomatic resolution remains challenging.

Broad Selloff Hits Tech Stocks Hardest

Every sector saw selling pressure on Friday. Cybersecurity stocks were particularly hard hit amid concerns that AI agents are replacing traditional software, with CrowdStrike dropping over 7%, Synopsys falling 5.3%, and Datadog declining 7.9%. Amazon also fell more than 4%. Energy stocks held up relatively better thanks to surging oil prices but could not fully resist the overall risk-off environment.

Dollar Strength and Safe Haven Rush

The flight to safety pushed the dollar index toward its best monthly performance since July. USD/JPY broke above 160 yen, reaching its highest level since July 2024. Gold surged 2.62% to $4,524 per ounce, while the US 10-year Treasury yield edged up to 4.43%. Demand for portfolio rebalancing using asset allocation calculators has surged significantly as investors scramble to adjust their positioning.

Investor Strategy: Diversification Review Essential

Experts recommend using a rebalancing calculator to reassess portfolio allocation during geopolitical crises. Equity-heavy portfolios may benefit from diversifying into bond ETFs like AGG or TLT, while increasing gold exposure through GLD is also worth considering. However, leveraged products like TQQQ can amplify losses during high-volatility periods and require cautious handling. Rather than panic selling, maintaining long-term asset allocation principles remains the wisest approach.

Conclusion

The US-Iran war is delivering significant shockwaves across global financial markets. With both the Dow and Nasdaq entering correction territory, investors should prepare for sustained high volatility. Using a rebalancing calculator to review current portfolio allocation ratios and increasing defensive ETF exposure to manage downside risk is the recommended strategy. Whether military operations conclude within the coming weeks will be the key variable determining market direction.

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#US Iran war#Nasdaq correction#rebalancing calculator#asset allocation calculator#VIX#S&P 500#Dow Jones

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