The Digest Bioeconomy Index, an index of publicly traded advanced bioeconomy stocks, gained 0.32 percent to 50.19 as enzymes rallied. For the day, Abengoa (ABGB) dropped 9.95 percent to $1.72 , while Gevo (GEVO) tumbled 5.02 percent to $0.38. Among other equities, Amyris (AMRS) was up 4.17 percent to $1.25. Overall, advances led declines by a 7 to 6 ratio for the day.