Reliance Industries Chairman Mukesh Ambani lost $7 billion from his net worth after Reliance Industries (RIL) shares closed 8.6% lower on Monday, witnessing the worst fall in over seven months. The drop came after RIL reported a 15% drop in Q2 net profit to ₹9,567 crore. Ambani's net worth is now $71 billion, according to Bloomberg Billionaires Index.