Sharecast - Corcoran, who is currently non-executive chair of Auction Technology (LON:ATG), will join the company on 29 January 2024.
Charlie Rozes will remain interim CEO and group chief financial officer until then, at which point he will continue as group CFO and a member of the board.
IG (LON:IGG) said Corcoran has extensive experience leading multinational fintech companies and delivering on their growth strategies. He was CEO of payments company WorldRemit until 2022 and of FTSE 100 company Paddy Power Betfair until 2018. He began his career as a derivatives trader at Bankers Trust (LON:BNKR) and JP Morgan (NYSE:JPM).
Chair Mike McTighe said: "I am very pleased to announce Breon's appointment following a comprehensive global search. He is a proven leader of high performing teams within multinational organisations, with an ability to deliver results for all stakeholders.
"The board is confident that Breon is the right person to lead IG and deliver the next phase of growth. I look forward to working with him."