According to data from the Bloomberg Billionaires Index Asia’s richest businessman Mukesh Ambani’s net worth has dropped by more than $2.59 billion. Meanwhile Gautam Adani’s wealth has seen a decline of $3.53 billion. Combined these losses amount to over Rs 52000 crore attributed to a virus emerging from China. No need to be surprised this is evident from the Bloomberg Billionaires Index. The stock market slump on Tuesday caused a significant reduction in the fortunes of both billionaires. According to the media reports the primary reason behind the market’s decline is believed to be China’s virus HMPV (Human Metapneumovirus). Let’s take a closer look at how this impacted their wealth and where their net worth stands now. Mukesh Ambanis Wealth Decline According to Bloomberg Billionaires Index Mukesh Ambani Asia’s richest businessman witnessed a drop of $2.59 billion (over ₹22000 crore) in his net worth. As a result his total fortune now stands at $90.5 billion. Interestingly within just a few days of 2025 Ambani’s net worth has already decreased by $119 million. Currently Mukesh Ambani ranks as the 17th richest person in the world. On Monday shares of Reliance Industries fell by more than 2% contributing to this decline. Gautam Adanis Wealth Declines Asia’s second-richest businessman and the world’s 19th wealthiest individual Gautam Adani saw an even steeper decline in his fortune. According to Bloomberg Billionaires Index his net worth dropped by $3.53 billion (over ₹30000 crore) reducing his total wealth to $74.5 billion. Notably within the first few days of 2025 Adani’s fortune has already shrunk by $4.21 billion. Monday’s trading session saw significant declines in the stocks of several Adani Group companies. Combined Loss of Over Rs 52000 Crore The sharp decline in stock markets has been linked to China’s HMPV virus. Combined the wealth of both Ambani and Adani decreased by more than Rs 52000 crore. According to the Bloomberg Billionaires Index the two Indian billionaires experienced the largest losses globally. Interestingly the virus has not yet spread significantly to the U.S. or Europe preventing similar panic in their markets. However if it does the ripple effects could potentially affect their stock markets as well.