I.O.I has achieved significant success on the 2026 25th week Circle Chart, topping 5 categories. The group's reunion and new song '갑자기' have also garnered attention, with member Choi Yoo-jung sharing insights into the group's revenue distribution. I.O.I's accomplishments come alongside other prominent groups like RIIZE, BTS, and NMIXX, who also secured top spots on various charts. | I.O.I has achieved significant success on the 2026 25th week Circle Chart, topping 5 categories. The group's reunion and new song '갑자기' have also garnered attention, with member Choi Yoo-jung sharing insights into the group's revenue distribution. I.O.I's accomplishments come alongside other prominent groups like RIIZE, BTS, and NMIXX, who also secured top spots on various charts.