JTBC Co. Ltd., the broadcaster owned by South Korea’s media giant JoongAng Group, defaulted on securitized loans and was downgraded to junk by a local ratings firm, triggering a series of rating cuts across the conglomerate.

JTBC Co. Ltd., the broadcaster owned by South Korea’s media giant JoongAng Group, defaulted on securitized loans and was downgraded to junk by a local ratings firm, triggering a series of rating cuts across the conglomerate.