 IK Sirius' first success was becoming Swedish runners-up in 1918, they followed this up by becoming Swedish champions twice in 1921 and 1922, but they then didn't have any more success in the league until 1926 where they were runners-up and they were also runners-up in 1928.In the first year of bandy league system in Sweden, 1930–31, Sirius entered in Division 1 Norra together with
AIK, Hammarby IF, IF Vesta, IFK Rättvik, Skutskärs IF, SK Tirfing, and Västerås SK and finished 5th.In the 1960s the club came back as one of the strongest in the league, finishing second behind Västerås SK in 1960.