NEW YORK ( TheStreet) -TheStreet Ratings' stock model upgraded SuperGen Inc ( SUPG) to 'Buy' from 'Hold'. Net income at this $173 million market cap, pharmaceutical company grew to $6.8 million, a 189% increase over the prior fourth quarter.

TheStreet Ratings released rating changes on 21 U.S. common stocks for March 3, 2011. In total, 12 stocks were upgraded and nine stocks were downgraded by our stock model.

In the fourth quarter, SuperGen reported $15.3 million in revenue, an increase of 27.7% compared to the year earlier quarter. Learn more about SuperGen: Company Profile, Income Statement, Balance Sheet, Stock Ratios, Analyst Ratings.

$197 million market cap, biopharmaceutical company, Santarus Inc ( SNTS) was downgraded to 'Sell' from 'Hold'. In fourth quarter results, Santarus reported a net loss of $2.1 million compared to a profit of $24.5 million in the year earlier quarter. Over the same time period, revenue shrank by 58.6% to $25.9 million. Learn more about Santarus: Company Profile, Income Statement, Balance Sheet, Stock Ratios, Analyst Ratings.

-- Reported by Kevin Baker in Jupiter, FL.

For additional Investment Research check out our Ratings Research Center.
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.

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