Toss has joined South Korea's list of large corporate groups for the first time, riding a prolonged stock market rally that lifted assets across the financial sector. The Fair Trade Commission designated Toss operator Viva Republica as a publicly disclosed business group on Wednesday. The label applies to conglomerates with combined assets above 5 trillion won ($3.38 billion). The designation takes effect May 1. Toss was one of 11 newly added groups. Daou Kiwoom Securities moved up to a stricter