All able-bodied men in South Korea must serve at least 18 months in the military and, after a years-long debate about whether BTS deserved an exemption, Jin, the oldest member of the group, enlisted last year.
His bandmate J-Hope started his mandatory service in April.
A third member, Suga, will begin his service on Friday.
Hybe shares closed down 0.82 per cent in Seoul Wednesday.
K-pop contract renewals can be complex, with shares of Blackpink’s agency YG Entertainment tumbling last week, after local media reports claimed member Lisa had rejected a renewal offer.
They subsequently bounced back, although the agency has yet to announce details of new contracts for Blackpink – one of K-pop’s most successful girl groups.
Source: CNA
