The top analyst upgrades, downgrades and initiations seen on Thursday included American Eagle Outfitters, Facebook, Nutrisystem, Pfizer, Roku, SeaWorld, Valero Energy and Zynga.
The top analyst upgrades, downgrades and other research calls from Tuesday include Agilent, Carvana, Cloudera, NCS Multistage, Noble Energy, Shopify and Xilinx.
Here are five stocks rated Buy at Stifel that stand to benefit in a big way from an increase the firm expects in the amount of spending on oil and gas pipelines.