BioScrip, DineEquity, Forest Oil, Vishay: U.S. Equity Movers

Shares of the following companies are having unusual moves in U.S. trading. Stock symbols are in parentheses and prices are as of 11:10 a.m. in New York.

Advanced Energy Industries Inc. (AEIS) gained 13 percent to $15.32 after rallying as much as 14 percent, the most intraday July 22. The maker of power conversion systems forecast second-quarter earnings of as much as 44 cents a share, above the average analyst estimate of 38 cents a share in a Bloomberg survey.

Avon Products Inc. (AVP) increased 5 percent to $31.05, the most intraday since Oct. 27. The world’s largest door-to- door cosmetics merchant reported first-quarter sales of $2.63 billion. On average, the analysts surveyed by Bloomberg projected revenue of $2.59 billion.

BioScrip Inc. (BIOS) surged 22 percent to $5.50, after rallying as much as 35 percent, the most intraday since October 2008. The Elmsford, New York-based pharmacy-benefits manager reported first-quarter adjusted earnings of 5 cents, beating the average analyst estimate of 1 cent.

Bridgepoint Education Inc. (BPI) rose 9.4 percent to $20.12 and touched $21.08 earlier, the highest intraday price since Nov. 2. The for-profit provider of college classes forecast earnings in 2011 of at least $2.47 a share, topping the $2.26 average estimate by analysts.

Chesapeake Energy Corp. (CHK) fell 5.4 percent, the most intraday since March 10, to $31.45. The most-active U.S. natural-gas driller reported a first-quarter loss after losing $725 million on energy hedging contracts.

Computer Sciences Corp. (CSC) fell 13 percent, the most in the S&P 500, to $43.84. The provider of computer services to companies and U.S. government agencies said full-year sales and profit probably missed its forecasts.

DineEquity Inc. (DIN) rose 3.7 percent to $51.65 and gained 9.7 percent earlier, the most intraday since Feb. 4. The restaurant company reported first-quarter earnings excluding some items of $1.42 a share, beating the average analyst estimate by 22 percent, according to Bloomberg data.

FirstEnergy Corp. (FE) climbed 5 percent, the second- most in the Standard & Poor’s 500 Index, to $41.58. The owner of utilities in Ohio, Pennsylvania and New Jersey said that, excluding some items, it expects to earn $3.20 to $3.50 a share this year. That topped the average analyst estimate of $3.17 in a Bloomberg survey.

Forest Oil Corp. (FST) slumped 8 percent to $32.90, after falling to $32.05, the lowest intraday price since Nov. 3. The Denver-based oil and gas company reported first-quarter adjusted earnings of 19 cents a share, missing the 34-cent average estimate by analysts.

Herbalife Ltd. (HLF) rallied 12 percent, the most in the Russell 1000 Index, to $101.25. The seller of nutritional and weight-loss supplements forecast second-quarter profit of as much as $1.48 a share, exceeding the average analyst estimate of $1.44 in a Bloomberg survey.

Kulicke & Soffa Industries Inc. (KLIC) jumped 15 percent to $10.35 and reached $10.46 earlier, the highest intraday price since Feb. 1. The maker of semiconductor assembly equipment forecast sales in the third quarter of at least $255 million, beating the average analyst estimate of $199 million.

Local.com Corp. (LOCM) declined 18 percent, the second- most in the Russell 2000 Index, to $3.68. The operator of an Internet search engine that helps users find local businesses forecast a second-quarter loss of 12 cents a share. Analysts in a Bloomberg survey estimated a profit of 7 cents a share on average.

MetroPCS Communications Inc. (PCS) rose 8.3 percent, the most in the S&P 500, to $17.85. The pay-as-you-go mobile-phone carrier reported first-quarter revenue of $1.2 billion, beating the average analyst estimate in a Bloomberg survey by 6 percent.

NetLogic Microsystems Inc. (NETL) dropped 7.6 percent to $40 after losing 8.6 percent earlier, the most intraday since Jan. 20. The developer of semiconductors reported first-quarter revenue of $98.7 million, missing the average analyst estimate by 1.8 percent.

Parexel International Corp. (PRXL) fell 17 percent, the most in the Russell 2000, to $22.41. The tester of experimental medicines for drug-makers forecast 2011 earnings of no more than 94 cents a share excluding some items, missing the average analyst estimate of $1.21 a share, according to a Bloomberg survey.

Pfizer Inc. (PFE) slid 3 percent, the most in the Dow Jones Industrial Average, to $20.40. Lipitor, the world’s biggest drugmaker’s cholesterol pill, had sales of $2.39 billion in the first quarter, falling short of the $2.55 billion average estimate of five analysts surveyed by Bloomberg. Sales will decline by more than half next year after generic-drug makers flood the U.S. market with cheaper copies, according to eight analysts surveyed.

Sears Holdings Corp. (SHLD) lost 8.7 percent, the second-most in the S&P 500, to $76.85. The largest U.S. department-store chain said domestic first-quarter comparable- store sales fell 3.6 percent, led by declines in appliances, apparel and consumer electronics.

Sykes Enterprises Inc. (SYKE) climbed 8 percent to $21.50 and touched $22.88 earlier, the highest intraday price since April 2010. The operator of call centers forecast revenue in the second quarter of at least $305 million, exceeding the average analyst estimate of $304.4 million.

Vishay Precision Group Inc. (VPG) rallied 9.8 percent to $18.08, after gaining 16 percent, the most intraday since Aug. 3. The designer of foil technology products forecast second- quarter revenue of at least $58 million, topping the average analyst estimate of $55.8 million.

To contact the reporters on this story: Inyoung Hwang in New York at ihwang7@bloomberg.net; Nikolaj Gammeltoft in New York at ngammeltoft@bloomberg.net.

To contact the editor responsible for this story: Nick Baker at nbaker7@bloomberg.net.