RPT — GCash owner Mynt secures over 20 cornerstone investors for potentially biggest Philippine IPO
(Repeats September 23 story. No change to text) Mynt secures BlackRock, T. Rowe as cornerstone IPO investors Mynt IPO could become Philippines' biggest-ever share sale Shares set to begin trading on October 20 By Yantoultra Ngui and Karen Lema HONG KONG/MANILA, Sept 23 (Reuters) — Mynt, the parent of Philippine mobile