Initially, 98% of shares in it were owned by Warta, Poczta Polska, PZU, Universal and Transakcja foreign trade headquarters (KC PZPR and ZSMP), and 2% were held by natural persons.

A year later in cooperation with its Portuguese shareholder and partner Banco Comercial Portugues (BCP), the Bank launched the Millennium retail service network.

On September 10, 2019, the Polish Financial Supervision Authority (KNF) granted permission to merge banks.

In its development strategy, the bank focuses on modern service channels.

[7] Bank Millennium is now included in the FTSE4Good Emerging Index, which comprises companies from more than 20 countries, which stand out in terms of environmental efforts, corporate social responsibility and corporate governance.