India, April 13 -- Indian stock markets opened the week on a sharply negative note as global risk sentiment deteriorated. Investors reacted strongly to rising geopolitical tensions between the United States and Iran, which triggered fears of instability in global energy markets.

The uncertainty pushed traders into a risk-off mode, leading to widespread selling across sectors. Banking, energy, and heavyweight stocks came under immediate pressure as global cues turned negative.

At the same time, a sudden spike in crude oil prices added another layer of concern for investors. Higher energy costs raised fears of inflation and margin pressure for Indian corporates. The overall mood in the market remained cautious, with investors preferr...