Indian stock market indices, the Sensex and Nifty 50, opened lower on Monday, with the Sensex down 300 points and the Nifty 50 hovering around 24,050. This decline comes in the wake of lower than expected GDP figures for the September quarter. Meanwhile, shares of Adani Group companies, particularly Adani Green Energy, experienced a significant surge. Adani Green Energy's shares rallied nearly 9%, marking its best session in a year, following a statement by Gautam Adani. The broader market saw selling pressure in sectors like PSU banks and financial services, contributing to the overall negative start for the market.