DigiTech Holding to buy Singapore's Challenger Technologies for about $170 mln
May 30 (Reuters) - DigiTech Holding proposed to acquire Singapore's Challenger Technologies in a deal that values the technology services provider at S$225 million (about $170 million), United Overseas Bank said on Tuesday, on behalf of DigiTech. ($1 = 1.3245 Singapore dollars) (Reporting by Upasana Singh in Bengaluru; Editing by Savio D'Souza)