Take a look at some of Wednesday's midday movers:
Hewlett-Packard tumbled after the company cut its 2013 guidance. In addition, the tech giant's CEO Meg Whitman said at an analyst meeting that the firm's improvement will take longer than expected.
Dell fell to 3-1/2 year lows following Hewlett Packard’s warning.
(See: Cramer’s 6 Stocks in 60 Seconds)
Netflix rose after Citi reiterated its "buy" rating and noted overall customer satisfaction has improved.
Sarepta Therapeutics surged after positive drug data on its Duchenne Muscular Dystrophy treatment. (Program Note: Sarepta CEO Chris Garabedian will be on CNBC's Mad Money With Jim Cramer at 6pm ET tonight.)
Kraft became the latest stock to suffer from erroneous trades.
US Airways took off after issuing an upbeat guidance. Other airlines, including Delta , United Continental and Hawaiian Holdings also traded higher.
Monsanto lost ground after the company reported a quarterly loss on weak corn seed sales.
Energy stocks including Chevron, Valero, BP, Schlumberger, and Halliburton were lower as oil prices fell below $90 a barrel.
Walgreen moved lower after a greater-than-expected 11-percent slide in September same-store sales.
DineEquity gained ground after Janney upgraded the parent of Applebee’s and IHOP to "buy" from "neutral."
Luxfer rose, while and Lifelock moved lower in their Wall Street debuts.
Mosaic and Potash lost ground after Lazard Capital downgraded the fertilizer companies.
(Read More: CNBC's Market Insider Blog)
—By CNBC's Rich Fisherman.
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