The VN-Index advanced for a third straight day, adding 3.94 points, or 0.6%, to 618.44 amid optimism that higher oil prices will help boost profits in energy-related companies. GAS (+5.3%), which jumped to a 10-month high and has doubled since January 21, was the day's big winner, contributing 2.88 points to the index. PVD (+6.4%), PVT (+4.8%) and PVS (+2.7%) have soared 73%, 53% and 50% since January 21.