The stock markets in India opened in red today owing to the decision of the Britain to exit European Union. Within minutes of trading starting today Rs 4 lakh crore was lost from the investors' wealth in Indian stock markets.Several Indian companies like Infosys, Tata motors, Tata Steel were all in red on the sensex listing. Sensex was still trading over 950 points down at just above 26,000-mark. Some stock values even dropped by 10 percent.