Tata Group stocks rally up to 14% as Tata Sons approves N Chandrasekaran's reappointment

Tata Chemicals gained as much as 11%, hitting its highest level in 19 weeks. Tata Motors Passenger Vehicles shares also rose to their highest level in 16 weeks, while Tata Investment Corporation gained as much as 6%. Tata Consultancy Services (TCS) was up around 2%