Top Analyst Upgrades & Downgrades (ADTN, LNT, AEP, AMLN, BCS, BRCM, EXPD, HLS, HES, MRO, IM, IDCC, INTX, LL, NTGR, RIMM, STO, SUP, VMED, QCOM, INTC, BBBY, AAPL)

These are some of the top analyst upgrades, downgrades and initiations seen in Wall Street research calls this Tuesday. ADTRAN Inc. (NASDAQ: ADTN) Cut to Equal-weight at Barclays. Alliant Energy...