
Alcoa Inc. (NYSE: AA) was maintained as Buy but the price target was raised to $20 from $17 (versus a $15.90 close) at Stifel.
AutoZone Inc. (NYSE: AZO) was downgraded to Hold from Buy at Argus after the company posted weaker-than-expected sales trends.
Barrick Gold Corp. (NYSE: ABX) was raised to Overweight from Neutral at HSBC.
BHP Billiton Ltd. (NYSE: BHP) was raised to Buy from Neutral at Citigroup.
Comerica Inc. (NYSE: CMA) was raised to Buy from Hold and the price target was raised to $65 from $55 (versus a $50.44 close) at Wunderlich.
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Freeport-McMoRan Inc. (NYSE: FCX) was started as Neutral at Credit Suisse, but the price target was up at $37 from its $33.25 closing price.
58.com Inc. (NYSE: WUBA) was started with a Neutral rating at Goldman Sachs.
KB Home (NYSE: KBH) was downgraded to Sector Perform from Outperform at RBC Capital Markets. Credit Suisse lowered its price target to $20 from $22.
ManpowerGroup Inc. (NYSE: MAN) was started with an Overweight rating and $90 price target (versus a $73.54 close) at Piper Jaffray.
Medtronic Inc. (NYSE: MDT) was reinstated with a Buy rating and a $75 price target at Bank of America Merrill Lynch.
Northrop Grumman Corp. (NYSE: NOC) was raised to Buy from Hold with a $145 price target (versus a $129.99 close) at Argus.
On Assignment Inc. (NYSE: ASGN) was started with an Overweight rating and $35 price target (versus a $26.77 close) at Piper Jaffray.
Towers Watson & Co. (NYSE: TW) was started with an Overweight rating and $134 price target (versus a $100.29 close) at Piper Jaffray.
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Yahoo! Inc. (NASDAQ: YHOO) was downgraded to Sector Perform from Outperform with a $44 price target at RBC Capital Markets.
In case you missed Wednesday’s top analyst upgrades and downgrades, they were in shares of Auxilium, Ericsson, GoldCorp, McDonald’s, Micron Technologies, Sarepta Therapeutics and a dozen or so more.