The Biofuels Digest Index, an index of publicly traded biofuels stocks, fell 1.18 percent to 69.55 as advanced biofuels declined. For the day, Solazyme (SZYM) slumped 11.31 percent to $3.92, while OriginClear (OOIL) dropped 25.61 percent to $0.06. Among other equities, Aemetis (AMTX) rocketed up 8.01 percent to $4.72. Overall, declines led advances by a 3 to 2 ratio for the day.