Asia's richest person Mukesh Ambani has surpassed Berkshire Hathaway CEO Warren Buffett to become the world's seventh-richest person. According to Forbes data, Ambani's net worth stands at $70.1 billion, while Warren Buffett's net worth is $68.2 billion. The share price of Reliance Industries has more than doubled since March following investments in Reliance Jio worth $15 billion.