Radhakishan Damani-promoted Supermarket chain Dmart has emerged the most-valuable Indian company founded by a self-made entrepreneur post-2000 with a valuation of Rs 3.42 lakh crore, as per data released by Hurun on Wednesday.Dmart owner Avenue Supermarket's value rose 44 per cent during the year, while Zomato, founded by Deepinder Goyal, saw a 190 per cent jump in valuation at Rs 2.51 lakh crore to occupy the second rank in the list collated by Hurun India.