OTT video platform ALTBalaji, a wholly-owned subsidiary of Balaji Telefilms Ltd, has acquired a 17.5 per cent stake in online celebrity digital engagement platform, Tring. The investment values Tring at about ₹100 crore. Tring, a celebrity shout-out and engagement platform, was started in February by Akshay Saini, Rahul Saini and Pranav Chabhadia.