Eidos Partners mission is to create an integrated organization that can offer its clients highly qualified professional financial advice.

Eidos Partners srl was founded in 2003 by a group of professionals with combined experience in corporate finance and capital markets gained at leading American and British investment banks. In 2005, Eidos Partners srl expanded its advisory services to include advising companies and private equity funds on how to access the equity capital markets, becoming in a short period of time one of the main IPO advisers in the Italian market.

In 2007, to respond to an ever increasing market demand for specific debt-related solutions, Eidos Partners srl created a debt advisory service to provide advice to companies and private equity funds on raising and structuring of debt as well as facilitating access to banks supporting investment plans, mergers, leveraged buy-outs and reorganisation of capital structures.

In March 2009, Riccardo Banchetti (former Co-Chief Executive of Lehman Brothers Europe and Middle East and Africa) founded, together with Antonio Miele, Pactum Advisers Limited, an advisory firm authorised and regulated by the Financial Services Authority, specialised in fixed income transactions, particularly in special situations, derivatives and illiquid assets.

In August 2011, Pactum Advisers Limited acquired Eidos Partners srl thereby combining Pactum's capabilities and credentials in fixed income and capital markets with the investment banking business focused on the Italian mid cap market of Eidos Partners srl. In January 2012 Pactum Advisers Limited changed its name to Eidos Partners Holdings Limited.