Elon Musk's wealth has dipped the most this year, falling by $47 billion to $385 billion as of February 22, according to Bloomberg Billionaires Index. He is followed by Gautam Adani, Venture Global LNG founders Michael Sabel and Robert Pender, and Indonesia's Prajogo Pangestu. India's Dilip Shanghvi, Shiv Nadar and Ravi Jaipuria's wealth also dipped by roughly $4 billion each.