ISTANBUL--(BUSINESS WIRE)--Turkcell (NYSE: TKC) (BIST: TCELL), Turkey's leading communications and technology company, has been ranked as the global leader in ESG (Environmental, Social, Governance) sustainability ratings by the London Stock Exchange Group (LSEG), thanks to its pioneering efforts in sustainability and environmental initiatives. Among 286 telecom companies worldwide, Turkcell achieved the highest ESG score in its sector. The LSEG ESG score, a primary criterion for investors, is. ...