Invest News DetailPRNewswire - Turkcell, Türkiye’s leading technology and communications company, announced that it was ranked one of the world's top 10 technology and telecommunications companies by total shareholder return by the Boston Consulting Group (BCG). The report published on October 13, is BCG's eleventh Value Creator Report and focuses on how companies can achieve sustainable value creation "in an era of diminished expectations." Turkcell is Türkiye's first technology and communications company to be included in any of the sector rankings since the report was first published in 1999. Turkcell is the leading GSM operator in Türkiye with 36.3 million postpaid and prepaid customers as of June 30, 2009 operating in a three player market with a market share of approximately 57 percent as of June 30, 2009.