The VN-Index increased by a half a percent on Wednesday as 21 of the 30 companies in the VN30 Index advanced. For the second straight day, GAS (+1.3%) was top contributor to the gain. Since the beginning of July, GAS is up 8.5% and has only experienced two negative sessions. SAB (+1.4%) has gained in 11 out of the last 14 trading sessions. Meanwhile, northern beer manufacturer BHN (-1.1%) has fallen more than 4% since the start of the month. VJC (+2.0%) hit a seven-month high