NEW YORK ( TheStreet) -TheStreet Ratings' stock model upgraded Bank Of New York Mellon ( BK) to 'Buy' from 'Hold'. Net income at this $37.3 billion market cap, financial services company grew to $679 million, a 14.5% increase over the prior fourth quarter.

TheStreet Ratings released rating changes on 10 U.S. common stocks for March 4, 2011. In total, seven stocks were upgraded and three stocks were downgraded by our stock model.

In the fourth quarter, Bank Of New York Mellon reported $3.9 billion in revenue, an increase of 15% compared to the year earlier quarter. Learn more about Bank Of New York Mellon: Company Profile, Income Statement, Balance Sheet, Stock Ratios, Analyst Ratings.

$766 million market cap, climate control company, LSB Industries Inc ( LXU) was upgraded to 'Buy' from 'Hold'. In fourth quarter results, LSB Industries reported net income of $18.1 million compared to a profit of just $38 thousand in the year earlier quarter. Over the same time period, revenue grew by 49.3% to $172 million. Learn more about LSB Industries: 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.