The foundations of Pisa, Lucca and Livorno retained minority interests in Casse del Tirreno.

Pisa Foundation received the shares of ICCRI – Banca Federale Europea when Casse del Tirreno was absorbed into ICCRI in 2001, which was then converted to the shares of Bipielle Investimenti in 2002, which was finally disposed for cash of €156,730,172 in 2003 (based on €147,239,710 agreed on 4 December 1999, plus interests since 16 June 2000 in a rate of 6 months Euribor + 0.25%).

As at 31 December 2015, the foundation was the minority shareholder of the following listed companies: Intesa Sanpaolo (0.066%), UniCredit (0.015%), Eni (0.033%), Enel (0.026%), Toscana Aeroporti (the successor of Società Aeroporto Toscano) (4.568%) and Banca Sistema (7.399%).

Pisa Foundation bought the building and founded the Fondazione Palazzo Blu to manage a museum.

The museum housed several arts collections, including Bandinella della confraternita di Santa Lucia dei Ricucchi of Francesco da Volterra,[7] Madonna con Bambino e santi of Taddeo di Bartolo.