The Digest Bioeconomy Index, an index of publicly traded advanced bioeconomy stocks, dropped 2.25 percent to 53.11 based on oil price woes. For the day, Solazyme (SZYM) dumped 10.19 percent to $2.91, while Amyris (AMRS) retreated 6.36 percent to $1.62. Among other equities, Gevo (GEVO) tumbled 8.02 percent to $1.95. Overall, declines led advances 5 to 2 for the day.