Tags PetroVietnam Securities Incorporated PSI together with CMC TS and Goline officially introduce new securities trading system Wednesday, Nov 20, 2019 PSI together with CMC TS and Goline officially launched new securities trading system on Tuesday. Major energy firms woo investors Friday, Jul 28, 2017 Representatives of the PetroVietnam Securities Incorporated (PSI) and the Vinacomin Power Holding Corporation told an investors’ conference on Wednesday that they were encouraged by investors’ interest shown in purchasing Vinacomin shares.