Wall St. Watchdog reveals information about companies for which stock analysts either upgraded or downgraded the shares on February 9th:

Upgrades

Aruba Networks (NASDAQ:ARUN):

Brigantine upgraded its rating on this company from Hold to Buy and changed its price target to $27.

Apollo Investment (NASDAQ:AINV):

Ladenburg Thalmann upgraded its rating on this company from Neutral to Buy and changed its price target from $8.25 to $6.

Kite Realty (NYSE:KRG):

RBC Capital Mkts upgraded its rating on this company from Sector Perform to Outperform and changed its price target from $6 to $7.

Terex (NYSE:TEX):

Longbow upgraded its rating on this company from Neutral to Buy and changed its price target to $30.

Regions Fincl (NYSE:RF):

Compass Point upgraded its rating on this company from Neutral to Buy and changed its price target from $5.6 to $7.5.

SunTrust Banks (NYSE:STI):

Compass Point upgraded its rating on this company from Neutral to Buy and changed its price target from $27 to $31.

Arris (NASDAQ:ARRS):

Collins Stewart upgraded its rating on this company from Neutral to Buy and changed its price target from $11 to $15.

Downgrades

Diodes (NASDAQ:DIOD):

Brigantine downgraded its rating on this company from Buy to Hold and changed its price target to .

Cisco Systems (NASDAQ:CSCO):

MKM Partners downgraded its rating on this company from Buy to Neutral and changed its price target from $25 to $22. ISI Group downgraded its rating on this company from Buy to Hold and changed its price target to $22.

U.S. Bancorp (NYSE:USB): The SEC plans to warn several, as yet unnamed, major banks that they intend to sue them over mortgage-related actions linked to the financial crisis, sources say, reports the Wall Street Journal.

Compass Point downgraded its rating on this company from Buy to Neutral and changed its price target from $33 to $30.

Acme Packet (NASDAQ:APKT):

Northland Securities downgraded its rating on this company from Outperform to Market Perform and changed its price target to .

OraSure Tech (NASDAQ:OSUR):

MLV & Co downgraded its rating on this company from Buy to Hold and changed its price target to $11.

Ingram Micro (NYSE:IM):

Needham downgraded its rating on this company from Buy to Hold and changed its price target to .

Amgen (NASDAQ:AMGN):

Oppenheimer downgraded its rating on this company from Outperform to Perform and changed its price target to .

TripAdvisor (TRIP):

The Benchmark Company downgraded its rating on this company from Buy to Hold and changed its price target to $31.

A123 Systems (NASDAQ:AONE):

Wunderlich downgraded its rating on this company from Hold to Sell and changed its price target from $3 to $0.5.

United Micro (NYSE:UMC): The company reported January 2011 sales NT$9.53B.

HSBC Securities downgraded its rating on this company from Overweight to Neutral and changed its price target to .

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To contact the editor responsible for this story: Damien Hoffman at editors@wallstcheatsheet.com

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