List of the Biggest IPOs of All Time Saudi Aramco - $25.6 billion. Alibaba Group - $21.7 billion raise. Softbank Corp - $21.3 billion. NTT Mobile - $18.1 billion. Visa - $17.86 billion. AIA - $17.78 billion. EneL SpA - $16.45 billion. Facebook - $16.45 billion. More items... Feb 19, 2023