Cross-selling fueled billings with strengthening fundamentals, UBS said. $58 price target. [Read: Stocks Will Correct by 10% to 15% in 2014 Even If New Highs Occur First ] Royal Caribbean ( RCL ) was upgraded at UBS to buy from neutral. Valuation call, UBS said. $40 price target. Red Robin ( RRGB ) was upgraded at Miller Tabak to buy from hold. $86 price target. Recent checks suggest that same-store sales growth should remain solid, Miller Tabak said. Tibco Software ( TIBX ) was downgraded at UBS to neutral from buy. Pressure to get back to double-digit total license growth with lack of improved execution, UBS said. Twitter ( TWTR ) was initiated with a market perform rating at BMO Capital. Valuation call, based on a $55 price target, BMO Capital said.