NEW YORK (

TheStreet

) -TheStreet Ratings' stock model upgraded

Macy's

(M) - Get Report

to 'Buy' from 'Hold'. Net income at this $9.9 billion market cap, department store grew by 43.1% to $667 million in the fourth quarter when compared to the year earlier quarter.

TheStreet Ratings released rating changes on 21 U.S. common stocks for February 22, 2011. In total, 12 stocks were upgraded and nine stocks were downgraded by our stock model.

In the fourth quarter, Macy's reported $8.3 billion in revenue, an increase of 5.4% compared to the year earlier quarter. Learn more about Macy's:

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Income Statement

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Stock Ratios

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Analyst Ratings

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$957 million market cap, rechargeable battery company,

A123 Systems Inc

(AONE)

was downgraded to 'Sell' from 'Hold'. In third quarter results, A123 Systems reported a loss of $43.7 million nearly double the loss of $22.8 million in the year earlier quarter. Over the same time period, revenue grew by 11.1% to $26.2 million. Learn more about A123 Systems:

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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.