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Bearish Risk: US-Iran Tensions Hit S&P 500; FII Outflows Threaten Nifty

Analyzing: US-Iran war effect: S&P 500 lost over $1 trillion market cap last week, crashes 5.83% in one month by livemint_markets · 21 Mar 2026, 9:03 AM IST (about 1 month ago)

What happened

The US S&P 500 index experienced a significant downturn, losing over $1 trillion in market capitalization and crashing 5.83% in a month, primarily attributed to the US-Iran conflict. This indicates a sharp increase in global risk aversion among investors.

Why it matters

While this news is a month old and its immediate impact has likely been absorbed, the underlying geopolitical tensions remain relevant. A sustained period of global instability can lead to capital flight from emerging markets like India, impacting FII flows and overall market liquidity.

Impact on Indian markets

Indian IT majors like TCS and INFY, heavily reliant on US revenues, face potential headwinds from a weakening US economy or reduced client spending. Broader market indices like Nifty and Sensex could experience pressure from FII selling, affecting large-cap stocks such as RELIANCE and HDFCBANK due to overall sentiment.

What traders should watch next

Traders should closely monitor the evolving geopolitical landscape, particularly any escalation in US-Iran tensions, and its impact on global crude oil prices. Watch for FII investment trends in India and the performance of global equity markets as indicators for future Nifty direction.

Key Evidence

  • S&P 500 index lost over 2.50% last week.
  • Market capitalization loss of over $1 trillion.
  • S&P 500 crashed 5.83% in one month.
  • The decline is attributed to the US-Iran war effect.

Affected Stocks

INFYInfosys Ltd
Negative

Indian IT companies with significant revenue exposure to the US market are vulnerable to economic slowdowns or reduced spending in the US.

TCSTata Consultancy Services Ltd
Negative

As a major IT exporter to the US, TCS could see reduced client spending and project delays if the US economy weakens due to geopolitical events.

RELIANCEReliance Industries Ltd
Negative

Global geopolitical tensions and crude oil price volatility can impact Reliance's O2C business and overall market sentiment.

HDFCBANKHDFC Bank Ltd
Negative

Broader market downturns and FII outflows due to global risk aversion can negatively affect large-cap banking stocks.

Sources and updates

Original source: livemint_markets
Published: 21 Mar 2026, 9:03 AM IST
Last updated on Anadi News: 21 Mar 2026, 9:57 AM IST

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