The following are the biggest percentage gainers on the TSX Venture Exchange in mid afternoon trading with their price movements AURORA SOLAR TECHNOLOGIES (ACU.V), $0.22, +0.07, +46.67% SOLARVEST BIOENERGY (SVS.V), $0.25, +0.05, +25.00% DELAVACO RESIDENTIAL PROPERTIES (DVO U.V), $0.28,