The following are the biggest percentage gainers on the TSX Venture Exchange in mid afternoon trading with their price movements AURANIA RESOURCES (AOZ.V), $0.60, +0.27, +81.82% COVALON TECHNOLOGIES (COV.V), $1.27, +0.32, +33.68% VIGIL HEALTH SOLUTIONS (VGL.V), $0.15, +0.03, +25.00%