After trading in positive territory on Friday morning, the VN-Index slid in afternoon trading to close down by three tenths of a percent, marking its fourth straight negative session, as investors exhibited concern for a possible correction following the index rebounding more than 30% since late March. For the week, the index dropped 1.9%. VIC (-2.0%) was the top contributing decliner for the second day in a row, falling nearly 6% for the week. In addition, Vingroup subsidiary VRE (-1.1%)