Benzinga's Top Upgrades

Analysts at JP Morgan upgraded Rambus Inc

from “neutral” to “overweight.” RMBS' shares closed at $4.4750 yesterday. Rambus' trailing-twelve-month operating margin is 16.79%. Analysts at Nomura upgraded Fortinet Inc

from “neutral” to “buy.” FTNT's stock closed at $26.42 yesterday. Fortinet's trailing-twelve-month ROE is 21.16%. Analysts at BMO Capital upgraded Tyson Foods Inc

from “market perform” to “outperform.” TSN's shares closed at $17.66 yesterday. Tyson Foods' PEG ratio is 1.47. Piper Jaffray upgraded The Ultimate Software Group Inc

from “underweight” to “neutral.” ULTI's shares closed at $69.38 yesterday. Ultimate Software Group's trailing-twelve-month revenue is $269.20 million.