Far from public glare, company is investing in tech firms and providing consultancy.
Tata made personal investments in four companies last year.
His presence matters more than the money he brings.
The company, which is a leading player in the Indian wearables market, is backed by angel investors like Shriram Nene and his wife and Bollywood actress Madhuri Dixit Nene and WhatApp's Neeraj Arora
Designing is another critical area for him, especially in the business of furniture.