Top Analyst Upgrades and Downgrades (ATVI, ARNA, BCS, EAT, CIT, CLF, ESRX, MWW, NBR, NOK, NVO, OREX, PBY, GOLD, SWK, STI, VPRT, KEY)
Jon OggThese are some of the top analyst upgrades, downgrades and initiations seen from Wall St. research calls this Thursday. Activision Blizzard Inc. (NASDAQ: ATVI) raised to Overweight at Piper Jaffray. Arena…