The VN-Index jumped 11.91 points, or 1.8%, to 660.24 today, its third straight increase of at least 1.3%. After dropping 3.8% last week, investor sentiment has turned on a dime and the market is now up 5.2% so far this week. On Thursday, it was VCB's (+4.7%) turn to lead the gains as the top contributor to the index, extending this week's rally in Vietnam's biggest bank's shares to 9.8%. Other Big 4 members VNM (+3.1%) and VIC (+0.8%) have advanced 7.0% and 9.6%,