Top Analyst Upgrades and Downgrades (ATVI, ADTN, AMD, AOL, CHK, CLF, CVGI, EA, LLY, FB, FDX, GRPN, HES, LNKD, OSIS, GOLD, RIO, STM, TWX, TIVO, WAB, ZNGA)
Jon OggThese are some of the top analyst upgrades, downgrades and initiations seen from Wall St. research calls this Wednesday. Activision Blizzard Inc. (NASDAQ: ATVI) started as Buy at Jefferies. Adtran Inc. (NASDAQ:…