1931: Foundation of the IMI as a Public Body (R.D.L.13 November converted into law n.1581 of 15 December 1932). The first president of the IMI, Teodoro Mayer states the intention only to take intervene for companies with assets and economic sustainability.
1936: The CSVI (Consortium for Grants on Industrial Values) becomes an independent section of the IMI with the Banking Act of 1936, with legal personality and distinct management until 1945, when it passed from IMI to the Bank of Italy.
1940: The Naval Credit Institute (ICN) is dissolved and the assets and liabilities are transferred to the IMI and CSVI
1943: The government of the Italian Social Republic requires the transfer of the IMI to the north, at Meina (in the province of Novara); only a forwarding office remains in Rome (Ufficio Stralcio)
1944: After the liberation of the capital, the Italian government appoints first Paride Formentini, then Stefano Siglienti Special Commissioner of the IMI. Siglienti became IMI president from December 1946 until his death in April 1971
1947: After the war, the IMI participated in the process of rebuilding the country, ensuring the management of the financial resources made available by the American government: Export Import Bank (Eximbank) loan and ERP (European Recovery Program) funds. This led to the opening of a representative office in Washington.
1962: The IMI, with other banks, creates the Autonomous Section of Naval Credit (SACN).
1968: The management of the Applied Research Fund is entrusted to the IMI.
1982: The IMI joins the pool of institutes who found the Nuovo Banco Ambrosiano, and in February 1985 sells its shares.
1983: IMI founds Imgest, and creates the first Italian funds, whose placement with the public is started through the Fideuram network (Fiduciaria Europea Americana SpA).
1985: The Manusardi Bank (IMI Group company) acquires control of the American Service Bank S.p.A. in Rome.
1986: Floating of Banca Manusardi’s ordinary shares on Stock Exchange.
1991: The institute is transformed from a Public Body to a Private law body. The Autonomous Section of Naval Credit (SACN) is transformed into Credito Mobiliare SpA, incorporated in 1993 by the IMI.
1992: Merger of Banca Manusardi and Fideuram to create Banca Fideuram.
1994: IPO (Initial Public Offering) in January 1994, and in February, floating of IMI on the Milan and New York stock exchanges
1998: Banca d'Intermediazione Mobiliare founded (formerly IMI Sigeco Sim), operative hub of the investment banking. Merger of IMI and Sanpaolo.