** Shares in Grupo Mexico's rail division climb after announcing plans to exit Mexico's main stock exchange
** Grupo Mexico Transportes will propose the move in a meeting with shareholders on June 27
** Shares BMV:GMXT tick up nearly 3% late morning before trimming gains to around 1.2%
** Trading in parent firm Grupo Mexico BMV:GMEXICO/B is nearly flat
** "We anticipate some price volatility on GMXT's share price until (we) have more details of the delisting process," writes Actinver transport analyst Ramon Ortiz
** GMXT also proposes approval of a new financing facility, without providing details