Benzinga's Top Upgrades

Analysts at Citigroup upgraded Aviva plc (NYSE: AV) from “neutral” to “buy.” Aviva's stock closed at $12.04 yesterday. Aviva had $40.59 billion in total cash for the latest quarter.

Goldman Sachs upgraded Mindray Medical International (NYSE: MR) from “neutral” to “buy.” Mindray Medical's shares closed at $33.72 yesterday. Mindray Medical's trailing-twelve-month operating margin is 17.81%.

Analysts at Bernstein upgraded Dendreon (NASDAQ: DNDN) from “market perform” to “outperform.” Dendreon's shares closed at $5.10 yesterday. Dendreon's trailing-twelve-month revenue is $442.18 million.

RBC Capital upgraded CenterPoint Energy (NYSE: CNP) from “sector perform” to “outperform.” CenterPoint Energy's shares closed at $19.79 yesterday. CenterPoint Energy's PEG ratio is 2.96.

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