The VN-Index was in positive territory for almost the entire session on Tuesday, peaking above 668 in the morning, but it slid into the red just before the close, ending the day down 0.65 points, or 0.1%, to 663.90. VNM (-2.6%) was the top contributor to the loss, followed by BID (-1.8%), which fell to its lowest level since April and is down 13% over the last seven weeks. BVH (-0.8%), HSG (-2.0%)