NEW YORK (

TheStreet

) -TheStreet Ratings' stock model upgraded

VeriFone Systems Inc

(PAY)

to 'Buy' from 'Hold'. Net income at this $3.5 billion market cap, electronic payment company rose by 1241% to $49.4 million in the fiscal fourth quarter compared to the same quarter last year.

TheStreet Ratings released rating changes on five U.S. common stocks for December 17, 2010. In total, five stocks were upgraded and no stocks were downgraded by our stock model.

In the fiscal fourth quarter, VeriFone Systems reported $276 million in revenue, a rise of 26.7% over the year earlier quarter. Learn more about VeriFone Systems:

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$1.4 billion market cap, oil & gas explorer,

Energy XXI (Bermuda)

(EXXI)

was upgraded to 'Hold' from 'Sell'. In fiscal first quarter results, Energy XXI (Bermuda) reported a 69.6% increase in revenues and a 101.1% increase in net income compared to the same quarter last year. Learn more about Energy XXI (Bermuda):

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Analyst Ratings

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-- Reported by Kevin Baker in Jupiter, FL.

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Kevin Baker became the senior financial analyst for TheStreet Ratings upon the August 2006 acquisition of Weiss Ratings by TheStreet.com, covering mutual funds. He joined the Weiss Group in 1997 as a banking and brokerage analyst. In 1999, he created the Weiss Group's first ratings to gauge the level of risk in U.S. equities. Baker received a B.S. degree in management from Rensselaer Polytechnic Institute and an M.B.A. with a finance specialization from Nova Southeastern University.