Industrialist Gautam Adani has re-entered the list of top 25 billionaires in the world as his net worth increased following a surge in shares of Adani Group companies. As per Bloomberg Billionaires Index, he's presently the world's 19th richest person with net worth of $66.7 billion (₹5.5 lakh crore). Adani is the second richest man in India after Mukesh Ambani.