The base offer size is 2 billion euros, but there is scope to increase it to 2.8 billion euros. : Vodafone Group said on Tuesday it would seek to raise up to 2.8 billion euros ($3.32 billion) in proceeds by floating infrastructure unit Vantage Towers in Europe's largest initial public offering of 2021. The UK-based operator set the price range for the flotation of Vantage Towers on the Frankfurt Stock Exchange at 22.50 to 29 euros per share, implying a total market capitalisation of up to 14.7 billion euros.