Eternedile Bologna

Fortitudo has for much of its history played second fiddle in its own city to arch rivals Virtus Bologna, with whom it contests the fierce Bologna Derby. Fortitudo won its first major trophy in 1998, winning the Italian Cup.

Fortitudo made the Italian league finals ten consecutive years (1997–2006). After three straight finals losses, Fortitudo won the Serie A for the first time in 2000. Four consecutive finals losses were followed by Fortitudo's second league title in 2005, courtesy of a 3–1 win over Armani Jeans Milano in the finals series when instant replay upheld a Ruben Douglas buzzer beater in Game 4 of the championship series.

In recent years, Fortitudo had been a fixture in the European top-tier Euroleague. Fortitudo's first achievement in European competition was a FIBA Korać Cup final against Jugoplastika in 1977 in their maiden participation. It got to the Euroleague Final four in 1999 (losing in the semifinal against city rivals Kinder Bologna and in third place game against Olympiacos) and the semifinal of the Euroleague playoffs in 2001 (again eliminated by rivals Virtus); then the club lost in the Euroleague final in 2004 to Maccabi Tel Aviv by 44 points. The 2006–07 season saw them change coaches thrice as they finished thirteenth (out of eighteen), though they still qualified for the 2007–08 ULEB Cup.

Due to economic irregularities, upon Fortitudo's relegation from the 2008–09 season, the team was not allowed to participate in the 2009–10 Serie A2, restarting from the Serie A dilettanti. After winning that league, Fortitudo was once again excluded from Serie A2 and the club's affiliation to the Italian Federation revoked. As such, Fortitudo was barred from playing in any league, save for youth development leagues.

The Rebirth and return to the top flight

On 18 June 2013, a group of local entrepreneurs, professionals and fans joined to give life to Fortitudo Pallacanestro Bologna 103, the spiritual successor (with the same fan base such as the Fossa dei Leoni fan group) of the original entity. Starting from the fourth division DNB, Fortitudo climbed to the second division Serie A2 where it played during the 2015–16 season.

After a successful campaign in 2018–19, the club qualified for promotion to Serie A for the first time since its 2009 dissolution. They later qualified to the 2020–21 Basketball Champions League, but they finished last in their group. In the 2021–22 season, they finished in the 15th position to be relegated to Serie A2.