New York/New Delhi: Richest Indian Mukesh Ambani jumped six positions to rank 13th on Forbes World's Billionaire list released Tuesday that was again topped by Jeff Bezos. E-commerce colossus Amazon founder Bezos, 55, remains the world's richest person, ahead of Bill Gates and Warren Buffett, as his riches swelled by USD 19 billion in one year and is now worth USD 131 billion, Forbes said.

Ambani, 61, saw wealth soar from USD 40.1 billion in 2018 when he was placed 19th richest in the world, to USD 50 billion to be rank at 13th in 2019. "Ambani chairs and runs USD 60 billion (revenue) oil and gas giant Reliance Industries, among India's most valuable companies," Forbes said. "In 2016, Reliance sparked a price war in India's hyper-competitive telecom market with the launch of 4G phone service Jio."