The VN-Index shot out of the gate Thursday morning, peaking above 660 before the rally lost steam and the index slid into negative territory just before the lunch break. In the afternoon, the market came under more selling pressure. However, technical support at 655 held, as it has each time it's been tested so far this week, and the index closed with a small loss, down 0.46 points, or 0.1%, to 656.18, for a fourth straight day of declines