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  1. 4 weeks into US-Israel-Iran war: Brent Crude up 45%, NIFTY & SENSEX fall over 9%, wiping out over ₹40 lakh crore in market cap

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4 weeks into US-Israel-Iran war: Brent Crude up 45%, NIFTY & SENSEX fall over 9%, wiping out over ₹40 lakh crore in market cap

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5 min read | Updated on March 28, 2026, 12:05 IST

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SUMMARY

The US-Israel war on Iran, which started on February 28, has completed its fourth week. The West Asia crisis has severely disrupted global supply chains and substantially increased volatility in global stock markets. Indian markets have lost over ₹40 lakh crore in market capitalisation since the war started. Here is a brief overview of how different indices and assets performed over the last one month.

US-Iran_war_oil_price_rise

NIFTY Bank index witnessed a steep decline of 13.6% in the last one month amid rising bond yields. | Image: Shutterstock

The US-Israel-Iran war has been ongoing for four weeks as of March 28. On February 28, the US, along with Israel, launched a massive attack on Iran called Operation Epic Fury. US President Donald Trump justified the attack, stating that Iran posed “an imminent threat” to the US and its allies.

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On the first day of the military strike, Iran's supreme leader, Ayatollah Ali Khamenei, who had led the country since 1989, was killed along with several senior leaders. Iran responded to these strikes with its ballistic missiles and drones targeting Israel and US military bases in Gulf countries such as Bahrain, Kuwait, Qatar and Saudi Arabia.

Soon, the regional conflict escalated into a global geopolitical crisis. The crucial oil shipping route, the Strait of Hormuz, which carries over 20 million barrels of crude oil per day, was shut down by Iran; several flights were cancelled, and global stock markets were significantly impacted.

The US-Israel-Iran war has caused significant volatility and a decline in the global stock markets, including India. Crude oil prices have surged nearly 50% in the last four weeks amid supply disruption concerns, while safe-haven assets like gold and silver saw unexpected declines, even as the US dollar has rapidly appreciated.

Here is a brief overview of how different assets and benchmark indices performed since the start of the Iran war.

Performance of benchmark indices over the last four weeks

IndicesFebruary 27 closeMarch 27 closeChange*
NIFTY5025,17822,819▼9.3%
SENSEX81,28773,583▼9.4%
NIFTY Bank60,52952,274▼13.6%
Dow Jones48,97745,166▼7.7%
S&P 5006,8786368▼7.4%
Nasdaq22,66820,948▼7.5%
*Change calculated based on February 27 and March 27 closing. February 28 was a market holiday.

As seen from the above table, major global and Indian indices have corrected sharply in the last one month since the start of the Iran war. NIFTY50 and SENSEX declined 9.3% and 9.4% respectively, while the NIFTY Bank index declined 13.6%. Over ₹40 lakh crore in market cap has been wiped out of the markets since February 27. Meanwhile, US markets like the Dow Jones, S&P 500 and Nasdaq are down between 7% and 8%.

Key factors behind the market fall

US-Israel-Iran war: Geopolitical tensions increased uncertainty across markets. Investors usually avoid risky assets like stocks during such times and prefer safer assets like US Treasuries and commodities.
Surge in crude oil prices: Oil prices have risen sharply due to supply concerns. Higher oil prices negatively affect import-dependent countries like India as the rising inflation impacts the overall economy, leading to weak market sentiments.
Rising bond yields: Both the US and Indian bond yields have gone up in the last few weeks. The yield on India’s 10-year G-Sec climbed from 6.6% in February 2026 to around 6.9% in March 2026, which is the highest level since July 2024. Meanwhile, the US 10Y Treasury yield jumped from 3.96% to 4.43% in the last four weeks. When bond yields rise, fixed-income investments become more attractive compared to risky assets like stocks, causing money to shift out of equity markets.
Banking stocks under pressure: The NIFTY Bank and NIFTY PSU Bank indices have witnessed the steepest decline of 13.6% and 16%, respectively. Rising bond yields reduce the value of government bonds held by banks, impacting their profitability.
Consistent FIIs sell-off: High bond yields and a weak Indian rupee have triggered further selling by foreign institutional investors (FIIs). The Indian rupee breached 94 per dollar on March 27. The depreciation of the Indian rupee against the US dollar reduces the overall return for foreign investors, driving them to reduce their exposure to Indian markets. FIIs have sold Indian equities worth ₹1.11 lakh crore in March so far.

How different assets performed in the last four weeks

AssetsFebruary 27March 27Change
Gold$5278/ troy ounce$4493/ troy ounce14.8%
Silver$93.76/ troy ounce$69.74/ troy ounce25.6%
Brent crude$73.2/barrel$106.2/barrel45%
Indian rupee₹91.02/dollar₹94.75/dollar4.0%
India 10-year bond yield6.66%6.93%4.0%
US Dollar Index97.3399.982.7%
*Change calculated based on Feb 27 and March 27 closing.
Gold and silver fall despite uncertainty: Safe-haven assets declined despite the geopolitical crisis and market uncertainty, as rising bond yields reduced the appeal of non-interest assets like gold. Besides this, the strong US dollar also made gold expensive for buyers.

Ahead of the war, gold and silver touched an all-time high in January 2026. Hence, investors likely booked profits. Silver prices declined over 25% as its demand is linked to industrial use, and a war-like situation generally weakens economic growth and demand.

US dollar Index strengthened: The US Dollar Index, which measures the price of the dollar against a basket of currencies, rose from 97.61 to 100.15 in the past four weeks as investors moved to the US dollar as a safe-haven asset during global uncertainty. Higher US yields also supported the dollar index.

As the US-Israel-Iran war enters its fourth week, US President Donald Trump has announced de-escalation talks with Iran. The US administration has presented Iran with a 15-point proposal outlining the terms for ending the conflict. Markets are looking forward to more clues in the coming week.


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About The Author

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Sreenivas Ajankar is a Deputy Editor at Upstox and has over nine years of experience in capital markets. His areas of expertise include equity research, analysis and business valuation.

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