Cliffs Natural, JDS Uniphase, Nalco Holding, SanDisk: U.S. Equity Movers

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.

Administaff Inc. (ASF US) jumped 24 percent, the most since August 2005, to $27.49. The staffing company reported a profit of 9 cents a share in the first quarter. Analysts, on average, expected a loss of 7 cents, according to a Bloomberg survey.

Agilysys Inc. (AGYS US) dropped 17 percent to $8.98 for the biggest loss since April 2009. The vendor of computers and software to hotels, casinos and health clinics said preliminary results showed fourth-quarter sales declined to $130 million to $140 million from $155 million a year earlier. The company had expected revenue to be little changed.

Alaska Air Group Inc. (ALK US) rose 9.9 percent to $45.52, the highest price since August 1999. The airline may rise as much as 40 percent as the traffic around Seattle and Hawaii improves and industry consolidation leaves fewer competitors, Barron’s reported.

Arrow Electronics Inc. (ARW US) rose 4.3 percent, the most since July 30, to $31.80. The distributor of electronic components predicted second-quarter profit excluding some items of at least 78 cents a share, topping the average analyst estimate of 66 cents in a Bloomberg survey.

BioSante Pharmaceuticals Inc. (BPAX US) climbed 3.8 percent to $2.44, the highest price since June 16. The developer of hormone replacement products announced in a statement on Business Wire the reinitiation of the development of its GVAX prostate cancer vaccine.

Blockbuster Inc. (BBI US) rallied 7 percent to 40 cents. The largest movie-rental chain gained after the Wall Street Journal reported that bankrupt rival Movie Gallery Inc. will close its remaining U.S. stores.

CapitalSource Inc. (CSE US) fell the most in the Russell 1000 Index, sliding 11 percent to $5.34. The loan provider to small and mid-sized businesses reported a loss of 67 cents a share in the fourth quarter, wider than the 14-cent estimate from analysts in a Bloomberg survey.

Cia. De Saneamento Basico do Estado de Sao Paulo (SBS US) rose 4.8 percent, the most since October, to $41.23. Brazil’s biggest water utility, also known as Sabesp, may rise as the nation’s economy rebounds and global demand for clean water expands, Barron’s reported.

Clean Harbors Inc. (CLH US) gained 5.6 percent to $66.98, the highest price since September 2008. The provider of waste management services was raised to “outperform” from “neutral” at Credit Suisse Group AG.

Cliffs Natural Resources Inc. (CLF US) fell 5.7 percent to $58.95 for the biggest decline in the S&P 500. North America’s largest iron-ore producer, with operations in Australia, joined a retreat by mining stocks on concern the country’s plan to impose the world’s heaviest tax regime on resource companies will cut billions from profits.

Dollar Thrifty Automotive Group Inc. (DTG US) rallied 15 percent to $50.70, the highest price since May 2007. Avis Budget Group Inc. (CAR US) said it would like to make a “substantially higher” counteroffer to Hertz Global Holdings Inc.’s (HTZ US) bid to acquire the rental car company.

Hertz slid 6 percent to $13.60. Avis slipped 0.3 percent to $15.08.

Doral Financial Corp. (DRL US) dropped 35 percent, the most since July 1994, to $3.49. The Puerto Rico bank holding company was downgraded to “sell” from “buy” at Cantor Fitzgerald & Co. after being passed over to acquire banks with Federal Deposit Insurance Corp. assistance.

Dr Pepper Snapple Group Inc (DPS US) added 4.5 percent, the most since Feb. 25, to $34.19. The beverage company was raised to “buy” from “hold” at Stifel Nicolaus by equity analyst Mark Swartzberg. The 12-month price estimate is $38 a share.

Encore Energy Partners LP (ENP US) slipped 14 percent, the most since December 2008, to $18.58. The owner of oil and gas fields in the U.S. said it and Denbury Resources Inc. (DNR US), the ultimate parent of Encore’s general partner, plan to explore strategic alternatives for Encore, including a possible merger, sale or other transaction. Raymond James Financial Inc. downgraded the stock to “underperform” from “outperform,” saying its “valuation will likely have to decrease before becoming an attractive acquisition candidate.”

Gaylord Entertainment Co. (GET US) dropped 11 percent, the most since September, to $29.93. The lodging and entertainment company withdrew its 2010 financial forecast because of flooding that caused the closing of its Gaylord Opryland Resort.

Integral Systems Inc. (ISYS US) declined 7.6 percent, the most since Dec. 7, to $8.06. The maker of Epoch Client satellite systems and software said Bill Bambarger resigned as chief financial officer because of personal and health reasons.

Jackson Hewitt Tax Service Inc. (JTX US) jumped 25 percent to $2.12 for the biggest gain in Russell 2000 Index. The second- biggest U.S. tax preparer said an agreement with lenders will allow it to fund off-season operations.

JDS Uniphase Corp. (JDSU US) rose 5.7 percent to $13.75. RBC Capital Markets raised its earnings estimates following the acquisition of Agilent Technologies Inc.’s network solutions text unit. The maker of fiber-optic equipment will earn 47 cents a share this year and 60 cents a share in 2011, RBC wrote in a report today. Its previous estimates were 44 cents and 57 cents, respectively.

Nalco Holding Co. (NLC US) advanced 5.9 percent to $26.19, the highest since January. The water treatment and energy services company partially owned by Warren Buffett’s Berkshire Hathaway Inc. is increasing production of a chemical to control the spreading oil spill in the Gulf of Mexico and it will have a significant beneficial impact, chief executive officer J. Erik Fyrwald told CNBC.

Sandisk Corp. (SNDK US) rose 9.1 percent to $43.52 for the biggest gain in the S&P 500. The maker of memory chips rose after Apple Inc. (APPL US) said it sold its one millionth iPad on April 30. Apple’s report beats estimates for sales growth of the device and is causing optimism for demand for Nand flash memory chips, said JMP Securities analyst Alex Gauna.

Micron Technology Inc. (MU US), the biggest U.S. maker of computer-memory chips, rose 5.8 percent to $9.89.

Standard Microsystems Co. (SMSC US) rose 4.2 percent, the most since April 8, to $26.77. The semiconductor maker was raised to “buy” from “hold” at Capstone Investments by equity analyst Jeffrey Schreiner. The 12-month price estimate is $33.00 per share.

Teradyne Inc. (TER US) rose 6.1 percent to $12.98. Piper Jaffray & Co. increased its price target for the maker of testing equipment for electronics to $26 from $22 in anticipation of stronger-than-expected demand.

To contact the reporter on this story: Elizabeth Stanton in New York at estanton@bloomberg.net

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