Benzinga's Top Upgrades (PTEN, ESV, NVTL, GTE)

Patterson-UTI Energy Inc

was upgraded by Weeden from “hold” to "buy." PTEN's shares closed at $18.50 yesterday. PTEN's quarterly earnings advanced 273.98% y/y. Wells Fargo Securities upgraded Ensco Plc

from "market perform" to "outperform." ESV's shares closed at $47.50 yesterday. Ensco's earnings have risen by 54.68% in the past 5 years. Novatel Wireless Inc

was upgraded by Jefferies from "hold" to "buy." NVTL's shares closed at $10.45 yesterday. Novatel's earnings are likely to surge by 414.09% this year. Analysts at Wunderlich upgraded Gran Tierra Energy

from "hold" to "buy." GTE's shares closed at $7.65 yesterday. Gran Tierra's quarterly earnings jumped 156.37% y/y.