The top analyst upgrades, downgrades and other research calls from Tuesday include Agilent, Carvana, Cloudera, NCS Multistage, Noble Energy, Shopify and Xilinx.
The jump in market volatility did not deter executives and 10% shareholders this week, and insider buying stayed solid.
From BioHealth Investor Biotechnology PROGEN INDS LTD [PGLA] +119.66% EXACT SCIENCES COR [EXAS] +12.89% ANADYS PHARMACEUTICA [ANDS] +7.29% ADVENTRX PHARMACTL [ANX] +6.36% SGX PHARMACEUTICALS [SGXP]...