XM Compañía Expertos en Mercados (XM) is a subsidiary of Colombian state transmission company ISA. It provides administration and management services of transactional systems and technology platforms on real time. XM offers services in three areas: energy, finance and transport. In the electric sector, the firm operates Colombia's national SIN grid and administers the local wholesale energy market. Through its subsidiaries, the company is also involved in the traffic control center for Medellín's intelligent mobility system and the operation of the energy derivatives market administrator in the local stock exchange.