Shares of the following companies had unusual moves in U.S. trading. Stock symbols are in parentheses and prices are as of 4 p.m. in New York.
AMAG Pharmaceuticals Inc. (AMAG US) jumped 13 percent to $15.91 for the second-biggest advance in the Russell 2000 Index. The Lexington, Massachusetts-based pharmaceutical company said it reached an agreement with the U.S. Food and Drug Administration to update the label for its anemia drug Feraheme with precautions.
Amarin Corp. (AMRN US) soared 65 percent to $5.85, the highest price since September 2007. The drugmaker said its experimental medicine, AMR101, lowered fatty chemicals in the blood by as much as 45 percent in a final-stage clinical study.
Amazon.com Inc. (AMZN US) advanced 1.3 percent to $179.49, the highest price since the shares started trading in 1997. The largest e-commerce company gained as Janney Montgomery Scott LLC said online sales today, known as Cyber Monday, may top $1 billion for the first time.
Beacon Roofing Supply Inc. (BECN US) rose 8.7 percent, the most since March 2009, to $17.12. The Peabody, Massachusetts- based roofing materials distributor gained even after fourth- quarter earnings missed estimates because of “positive momentum” this month and last month, Kalpesh Patel, a New York- based analyst with Jefferies & Co., wrote in a note.
Comverse Technology Inc. (CMVT US) jumped 8.5 percent to $7.75 for the biggest gain since Oct. 13. The voice-mail software maker is in advanced talks to be acquired by Oracle Corp. (ORCL US) and Platinum Equity at $9.5 to $10 a share, Calcalist reported, without saying how it obtained the information.
FedEx Corp. (FDX US) increased 4.7 percent, the most since July 26, to $91.59. The second-largest U.S. package-shipping company was raised to “outperform” from “neutral” at Credit Suisse Group AG.
Goodyear Tire & Rubber Co. (GT US) had the second-biggest retreat in the Standard & Poor’s 500 Index, losing 3.9 percent to $9.64. The largest U.S. tiremaker was cut to “neutral” from “buy” at Northcoast Research.
Hewlett-Packard Co. (HPQ US) slipped 1.4 percent to $42.60 for the biggest loss in the Dow Jones Industrial Average. The world’s largest computer maker was sued by shareholders seeking information about the company’s ouster of former Chief Executive Officer Mark Hurd. In one of two cases filed in Delaware Chancery Court, mostly under seal, shareholder Lawrence Zucker sued some HP directors seeking “monetary relief” on behalf of the company.
Protalix BioTherapeutics Inc. (PLX US) gained 5.1 percent. the most since Oct. 18, to $8.80. The biotechnology company and Pfizer Inc. (PFE US) submitted the experimental taliglucerase alfa medicine designed to treat Gaucher disease for review in Europe.
Quiksilver Inc. (ZQK US) rose 7.8 percent, the most since Sept. 24, to $4.31. The surfer-themed apparel maker said it expects fourth-quarter revenue to be between $492 million and $497 million, higher than a previous forecast given in September. The Huntington Beach, California-based company also announced the plan to sell 200 million euros of seven-year senior bonds.
Rubicon Minerals Corp. (RBY US) rallied 36 percent, the most since February 2007, to $6.04. The company, which explores for gold in Canada and the U.S., announced a resource estimate for part of its Phoenix Gold Project in Ontario.
Stillwater Mining Co. (SWC US) fell 4.8 percent to $19.05, the lowest price since Nov. 18. The Billings, Montana-based producer of platinum and palladium said OAO GMK Norilsk Nickel’s Norimet Ltd. unit, the majority stockholder, will sell 37 million shares.
Superior Energy Services Inc. (SPN US) had the second- biggest gain in the Russell 1000 Index, rising 6.2 percent to $33.32. The oilfield service provider was lifted to “overweight” from “equalweight” by Barclays Plc.
Theravance Inc. (THRX US) advanced 10 percent, the most since Aug. 4, to $25.20. GlaxoSmithKline Plc will buy about $129.4 million of stock in Theravance, increasing its stake to 19 percent in the U.S. drugmaker that’s helping to develop the Relovair asthma treatment.
Visa Inc. (V US) dropped 1.7 percent to $74.19, the lowest price since Oct. 8. The world’s biggest payments network faces the threat of losing market share to companies that offer mobile payments at point of sale, Sanford C. Bernstein & Co. said.
Voltaire Ltd. (VOLT US) surged 35 percent, the most since it went public in July 2007, to $8.65. Mellanox Technologies Ltd. (MLNX US) agreed to buy the Israeli software developer for $8.75 a share. Mellanox slipped 3.3 percent to $24.37.
Walgreen Co. (WAG US) rose 3.3 percent, the most since Sept. 28, to $34.80. The largest U.S. drug-store chain should report higher-than-estimated monthly sales this week, driven partly by an increase in flu shots, Ed Kelly, a New York-based analyst with Credit Suisse, wrote in a note today.
To contact the reporter on this story: Whitney Kisling in New York at firstname.lastname@example.org.
To contact the editor responsible for this story: Nick Baker at email@example.com.