NEW YORK ( TheStreet) -TheStreet Ratings' stock model upgraded ESCO Technologies Inc ( SCMP) to 'Buy' from 'Hold'. Net income at this $1 billion market cap, utility equipment company rose 9.8% to a profit of $23.9 million in fiscal fourth quarter compared to the same quarter last year.

TheStreet Ratings released rating changes on 12 U.S. common stocks for December 27, 2010. In total, 10 stocks were upgraded and two stocks were downgraded by our stock model.

In the fourth quarter, ESCO Technologies reported $207.9 million in revenue, an increase of 22.7% over the year earlier quarter. Learn more about ESCO Technologies: Company Profile, Income Statement, Balance Sheet, Stock Ratios, Analyst Ratings.

$4.4 billion market cap, electronics manufacturer, Jabil Circuit Inc ( JBL) was upgraded to 'Buy' from 'Hold'. In fiscal first quarter results, Jabil Circuit reported a 277.1% increase in net income and a 32.2% increase in revenue when compared to the same quarter last year. Learn more about Jabil Circuit: Company Profile, Income Statement, Balance Sheet, Stock Ratios, Analyst Ratings.

-- 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.