Option volume was off the charts in AAR on Monday.
FirstEnergy is a slow-moving utility but it handed traders some fast money on Friday.
The bears attacked the chipmaker on Thursday.
Petrobras breaks resistance, and a large trader apparently believes the Brazilian oil giant will keep rallying.
The shorts have been fighting Zynga but Tuesday's upside option action was tough to ignore.
The bulls are coming back to NRG Energy ahead of next week's earnings report.
The bulls came back to Autodesk in a huge way on Friday.
The options got cheap in Riverbed Technology on Thursday and buyers stepped in.
Value hunters turned to American Eagle Outfitters on Wednesday.
Manulife Financial reports earnings next week and the options paper heated up Tuesday.