The Biofuels Digest Index, an index of publicly traded biofuels stocks, climbed 0.68 percent to 78.10 as ethanol equities rallied. For the day, Biofuel Energy (BIOF) soared 27.39 percent to $7.72, while Gevo (GEVO) rebounded 12.45 percent to $0.93. Among other equities, Ceres (CERE) slumped 10/15 percent to $0.61. Overall, advances led declines 7 to 4 for the day.