Benzinga's Top Upgrades (POT, WLP, HUM, FTO)

Potash Corp of Saskatchewan Inc

was upgraded by Gleacher from "neutral" to "buy." POT's shares closed at $60.00 on Friday. POT's trailing-twelve-month operating margin is 38.03%. Davenport upgraded WellPoint Inc

from "neutral" to "buy.” WLP's shares closed at $66.52 on Friday. WellPoint's trailing-twelve-month revenue is $58.80 billion. Jefferies upgraded Humana Inc

from “hold” to “buy.” HUM's shares closed at $62.60 on Friday. Humana's trailing-twelve-month revenue is $33.87 billion. Analysts at Barclays upgraded Frontier Oil Corporation

from “underweight” to “equal weight.” FTO's shares closed at $28.03 on Friday. Frontier Oil's trailing-twelve-month revenue is $5.88 billion.