Take a look at some of Tuesday's morning movers:
ConAgra (CAG) - The packaged foods maker agreed to acquire Ralcorp (RAH) for $5 billion to become the biggest private label food company in North America.
Dollar General (DG) - The retailer will replace Cooper Industries (CBE) to join the S&P 500 index (^GSPC) after the close of trading Friday. The move comes as a result of Eaton's (ETN) plans to acquire Cooper.
Facebook (FB) - Nomura boosted its price target on the social-networking giant to $32 from $27 a share.
Halliburton (HAL) - JPMorgan raises its price target on the oilfield services company to $45 from $43 a share.
Hewlett-Packard (HPQ) - The tech giant was sued by an investor over the $8.8 billion writedown that the company said was related to the acquisition of its Autonomy software unit.
Corning (GLW) - The glass manufacturer said it sees stronger-than-expected fourth-quarter LCD glass volume and full-year sales of its gorilla glass approaching $1 billion, thanks to robust demand for LCD televisions and other consumer electronic devices in North America and China.
Starbucks (SBUX) - The coffeehouse chain plans to add 800 new stores in China over the next three years, according to The Wall Street Journal.
ADT (ADT) - The home security services company posted better-than-expected earnings and said its board approved a $2 billion share repurchasing program over three years.
Pfizer (PFE) - The pharmaceutical company was downgraded to "neutral" from "buy" at MKM Partners.
Acadia Pharmaceuticals (ACAD) - The biopharmaceutical company announced successful results from the phase three trial of its drug in patients with Parkinson's disease psychosis.
-By CNBC's JeeYeon Park (Follow JeeYeon on Twitter: @JeeYeonParkCNBC) Questions? Comments? Email us at marketinsider@cnbc.com
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