SanDisk (SNDK) was downgraded at Summit Research to hold from buy. Valuation call, based on a 12-month price target of $87, Summit Research said.
Tyson Foods (TSN) was downgraded at Credit Suisse to underperform from neutral. Twelve-month price target was lowered to $35. The company expensively settled bidding war with Pilgrim for acquisition of Hillshire, Credit Suisse said.
Twitter (TWTR - Get Report) was upgraded at Wells Fargo to market perform from underperform. Company is showing an Impressive utilization of its mobile platform and the risk/reward appears more balanced, following the recent weakness, Wells Fargo said.
Union Pacific (UNP) was upgraded at RBC Capital to outperform from sector perform. Twelve-month price target is $115. Company has solid growth potential and low earnings volatility, RBC Capital said.
Wendy's (WEN) was downgraded at Argus to hold from buy. Twelve-month price target is $8.50. Franchising could continue to weigh on sales in the coming quarters, Argus said.