BTS Arirang, long-term reign on Billboard
BTS's 5th studio album 'Arirang' has remained on the Billboard 200 for 21 consecutive weeks.
The title track 'Swim' has maintained a Top 10 spot on the Global (Excl. U.S.) chart for 21 weeks.
BTS is currently on their North American tour, with upcoming shows at Rogers Stadium in Toronto.
Original sources
Fan(Q) summary based on the linked public sources.