Tata Group companies' shares gained up to 10 per cent on Thursday, with Tata Chemicals and Tata Teleservices among the top gainers. This market reaction came after Ratan Tata, the Tata Group's Chairman Emeritus, died on Wednesday evening. Tata, aged 86, is credited with building the company into a global corporation, reported PTI. 

According to the report, Tata Investment Corporation's stock increased 10.47 per cent to Rs 7,235.80, while Tata Chemicals rose 6.26 per cent to Rs 1,174.85. Tata Teleservices Maharashtra increased 5.84 per cent to Rs 83.77, while Tata Elxsi rose 3.37 per cent to Rs 7,867.80. Tata Power gained 2.56 per cent, trading at Rs 472.70.