S&P said any changes to the group's financial policies were likely to be gradual, citing Tata's long history and conservative management approach

On the Bombay Stock Exchange (BSE), shares of Tata Chemicals soared 20 per cent, while Tata Investment Corporation gained 15.24 per cent, Tata Motors Passenger Vehicles traded 5.89 per cent higher, TCS surged 5.47 per cent