ISNS - Companhia Energetica de Minas Gerais Torchlight Energy Resources among premarket losers' pack May, 03 2021 08:11 AM Image Sensing Systems Inc. Companhia Energetica de Minas Gerais (CIG) -10%.Torchlight Energy Resources (TRCH) -8%.Image Sensing Systems (ISNS) -8%. For further details see: Companhia Energetica de Minas Gerais, Torchlight Energy Resources among premarket losers' pack