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.
Uranium stocks rallied after Uranium One Inc. (UUU CN), a mining company controlled by Moscow-based ARMZ Uranium Holding Co., reported 2011 production that beat analysts’ estimates. Denison Mines Corp. (DNN US) rose 8.9 percent to $1.71. Cameco Corp. (CCJ US) climbed 6.7 percent to $21.54. Uranium Resources Inc. (URRE US) rose 7.5 percent to 86 cents. Ur-Energy Inc. (URG US) gained 8.6 percent to $1.01. USEC Inc. (USU US) jumped 15 percent to $1.53.
ArQule Inc. (ARQL US) rallied 12 percent, the most since July 2010, to $6.67. The developer of cancer therapies said its Tivantinib delays the progression of cancer in a phase two study of 107 patients with liver cancer who were previously treated.
Carnival Corp. (CCL US) dropped 14 percent, the most since September 2001, to $29.60. A ship from the world’s largest cruise-line owner ran aground off Italy’s Tuscan coast Jan. 13. The incident comes at the start of the industry’s peak booking season.
Royal Caribbean Cruises Ltd. (RCL US), the world’s second-largest operator, fell 6.2 percent to $26.97. Barclays Capital said the event may hurt the cruise industry.
Citigroup Inc. (C US) dropped 8.2 percent, the most since Oct. 3, to $28.22. The third-biggest U.S. lender by assets said fourth-quarter profit dropped 11 percent, missing analysts’ estimates for a profit increase, as revenue from stock and bond trading declined.
Columbia Laboratories Inc. (CBRX US) slid the most in the Russell 2000 Index, losing 54 percent to $1.10. The drugmaker’s progesterone gel to reduce the risk of pre-term births isn’t effective, U.S. regulators said in a report.
KV Pharmaceutical Co. (KV/A US), which makes competing drug Makena, jumped 6.2 percent to $1.89.
Compuware Corp. (CPWR US) slipped 9.5 percent, the most since December 2008, to $7.49. The business software maker reduced its full-year forecast, saying it now expects to earn 42 cents a share at most. The company had projected at least 47 cents.
Convio Inc. (CNVO US) surged 48 percent to $15.89 in the biggest intraday rally since its April 2010 initial offering. Blackbaud Inc. (BLKB US) agreed to buy the Austin, Texas-based provider of software for non-profit organizations for $16 a share and said it expects the deal to close during the first quarter.
Green Mountain Coffee Roasters Inc. (GMCR US) rose 8.3 percent, the most since Nov. 16, to $50.87. SunTrust Robinson Humphrey said brewer sales rose 50 percent in December from a year earlier at the maker of single-serve Keurig machines and capsules.
Ista Pharmaceuticals Inc. (ISTA US) climbed 13 percent to $8.22, the highest price since June 10. The maker of drugs for glaucoma and the pain of cataract surgery said Valeant Pharmaceuticals International Inc. (VRX CN), Canada’s biggest drugmaker, raised a takeover offer to $7.50 a share in cash from $6.50, and “set a target price of $8.50,” subject to due diligence.
Ku6 Media co. (KUTV US) more than doubled to $3.30 for the biggest gain since February 2005. The provider of online video-sharing service in China agreed to a partnership with YouTube to offer content overseas.
Lions Gate Entertainment Corp. (LGF US) rose 4 percent to $8.94, the highest price since October 2008. The film and television studio behind TV’s “Mad Men” and the Tyler Perry films acquired “Twilight” producer Summit Entertainment LLC for $412.5 million in cash and stock, uniting two of Hollywood’s largest independent studios.
Provident Energy Ltd. (PVX US) surged 22 percent to $11.34, the highest price since November 2007. The natural gas liquids storage and transportation company agreed to be bought by Pembina Pipeline Corp. (PPL CN) for about C$11.86 a share.
R.R. Donnelley & Sons Co. (RRD US) slipped 16 percent to $12.13 for the biggest retreat in the Standard & Poor’s 500 Index. The largest North American printer said its 2011 adjusted operating margin will be 6.6 percent to 6.7 percent, compared with an earlier forecast for 6.8 percent to 7 percent.
Sealed Air Corp. (SEE US) rose 4.7 percent, the most since Nov. 30, to $18.82. The maker of Bubble Wrap said Richard Wambold, former chief executive officer of Pactiv Corp., was elected to the company’s board as an independent director, beginning March 1.
Sears Holdings Corp. (SHLD US) rose 9.5 percent to $36.75 for the biggest advance in the S&P 500. The retailer controlled by hedge fund manager Edward Lampert rose amid speculation that the company may seek to go private.
Spirit Airlines Inc. (SAVE US) fell 5.5 percent, the most since Nov. 9, to $14.19. The discount airline said it is selling 11 million shares in a secondary offering, which represents 15 percent of its shares outstanding as of Dec. 21.
Tesla Motors Inc. (TSLA US) jumped 17 percent to $26.60 for the biggest gain in the Russell 1000 Index. The U.S. electric-car maker said development of its Model S vehicle is on schedule.
Venoco Inc. (VQ US) had the second-biggest advance in the Russell 2000 Index, surging 30 percent to $9.99. The oil and gas exploration company agreed to be bought by its Chairman and Chief Executive Officer Timothy Marquez for $12.50 a share.