Prime Minister Narendra Modi paid his tribute to billionaire stock market investor Rakesh Jhunjhunwala who died in Mumbai on Sunday morning. Remembering Jhunjhunwala PM Modi in a tweet said, "Rakesh Jhunjhunwala was indomitable. Full of life, witty and insightful, he leaves behind an indelible contribution to the financial world. He was also very passionate about India’s progress. His passing away is saddening. My condolences to his family and admirers. Om Shanti."