Take a look at some of Monday midday movers:
AK Steel Holding - The steel manufacturer dropped after saying it would offer 35 million shares of common stock in a public offering. It also began a registered offering of $430 million of senior notes due in 2021.
Amazon.com - The online retailer fell declined after it cut the price of the Fire Phone price to 99 cents with a two-year contract.
AstraZeneca - The drug maker declined moved lower after its experimental respiratory drug showed mixed results in treating chronic lung disease.
Boeing - The aerospace company climbed after Ryanair Holdings said it would purchase as many as 200 Boeing 737 Max jetliners.
Callon Petroleum - The developer of oil-and-gas properties in the Permian Basin in West Texas fell after announced a public offering of 12.5 million shares.
Chiquita Brands International - The banana producer climbed after it delayed a shareholder vote on a proposed merger with Fyffes to discuss an unsolicited offer from Safra Group and Cutrale Group.
Ford Motor - The car manufacturer and rival General Motors slid after Morgan Stanley downgraded their shares.
GlaxoSmithKline - The drug manufacturer fell after Credit Suisse cut its price target.
GoPro - The maker of wearable video cameras surged after FBN Securities initiated coverage with an outperform rating.
Hertz Global Holdings - The rental-car company rose after its chairman and CEO, Mark Frissora, stepped down from his positions, citing personal reasons. He had been under pressure to resign from activist investor Carl Icahn.
Hyperion Therapeutics - The drug developer fell after saying it would halt development of a diabetes drug after learning some employees of a recently required subsidiary manipulated data to get a favorable result.
Illumina - The maker of diagnostic tools gained after Morgan Stanley began coverage with an equal weight.
Keryx Biopharmaceuticals - The drug developer dropped after FBR Capital downgraded its shares to underperform from market perform.
Panera Bread - The restaurant operator moved lower after CNBC.com reported the company was asking its customers not to bring their guns into its restaurant.
Tesla Motors - The maker of electric cars rose after CEO Elon Musk said his company could sign a deal with Toyota Motors during the next two to three years.
Rackspace Hosting - The supplier of cloud-computing services jumped after Bloomberg News cited people familiar with the matter in reporting CenturyLink was looking to purchase the company.
Twitter - The social network rose after saying it would run a test allowing retailers to add buy buttons to their tweets.
Whirlpool - The appliance maker advanced after Sterne Agee backed its buy rating on the stock following the sale of General Electric's appliance business to Electrolux.
Yahoo - The search engine, which owns more than 22 percent of Alibaba Group Holding, rose after the e-commerce company said in a regulatory filing that it intends to raise up to $21.1 billion in an initial public offering.
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—By CNBC's Rich Fisherman.
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