Core banking supplier Misys has appointed advisors ahead of a possible £5.5 billion London initial public offering, according to the Sunday Times.
Investment adviser Moelis has been called in to handle the listing, while Goldman Sachs, Bank of America Merrill Lynch and JPMorgan have all been enlisted to review options.
The float would prove a boon for Vista Equity Partners, which acquired Misys in 2012 for just £1.27 billion after merger talks between the core banking vendor and Swiss rival Temenos collapsed.
Vista is understood to have been looking for a buyer since late 2014, with Singapore's state-owned investment fund Temasek Holdings and Canadian pension funds among those rumoured to have shown interest.