The Digest Bioeconomy Index, an index of publicly traded advanced bioeconomy stocks, edged up 0.22 percent to 53.61 as enzymes rallied. For the day, Renewable Energy Group (REGI) shed 2.17 percent to $7.65 percent to $7.82, while Aemetis (AMTX) rebounded 9.65 percent to $3.41. Among other equities, Pacific Ethanol (PEIX) dumped 5.25 percent to $6.50. Overall, declines led advances 2 to 1 for the day.