First Solar, Life Partners, Rambus, 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.

Agilent Technologies Inc. (A US) rose 4.5 percent to $52.58, the highest price since January 2001. The world’s biggest maker of scientific-testing equipment increased its full-year earnings forecast to at least $2.84 a share. That topped the average analyst estimate of $2.66 in a Bloomberg survey.

Atlas Pipeline Partners LP (APL US) jumped 14 percent, the most since Nov. 9, to $36.59. The natural-gas pipeline operator said it expects 2011 earnings before interest, taxes, depreciation, and amortization to amount to as much as $205 million, up from an earlier projection of as little as $160 million.

Atlas Energy Inc. (ATLS US) reported a profit of 65 cents a share from continuing operations in the first quarter and the stock gained 13 percent to $24.98.

CA Inc. (CA US) fell 8.6 percent to $22.90 for the second-biggest retreat in the Standard & Poor’s 500 Index. The second-largest maker of software for mainframe computers posted fourth-quarter sales and profit that missed the average analyst estimates, Bloomberg data show.

Dean Foods Co. (DF US) jumped the most in the S&P 500, climbing 9.2 percent to $13.41. The biggest U.S. dairy processor was raised to “buy” from “neutral” at Goldman Sachs Group Inc., which said the stock may double over the next two years as prices on milk produced for private labels stabilize.

Dillard’s Inc. (DDS US) rallied 15 percent to $56, the highest price since at least 1980. The Arkansas-based department-store chain posted first-quarter profit excluding some items of $1.27 a share, exceeding the average analyst estimate of 91 cents in a Bloomberg survey.

Eastman Kodak Co. (EK US) jumped 5.3 percent, the most since March 28, to $3. The company’s digital-camera technology doesn’t violate Apple Inc.’s (AAPL US) patent rights, a U.S. International Trade Commission judge said.

Evergreen Solar Inc. (ESLR US) plunged 23 percent to $1.08 for the biggest loss in the Russell 2000 Index. The maker of thin polysilicon wafers said it’s unsure whether it will be able to remain in business due to liquidity concerns.

First Solar Inc. (FSLR US) slid 4.9 percent, for the third-biggest loss in the S&P 500, to $125.65. The world’s largest maker of thin-film solar modules fell after German Chancellor Angela Merkel said the country’s subsidies for solar power may be too high.

Life Partners Holdings Inc. (LPHI US) plunged 20 percent, the second-most in the Russell 2000, to $5.62. U.S. Securities and Exchange Commission investigators plan to recommend that the agency file civil claims against the company and Chief Executive Officer Brian Pardo. The case focuses on the company’s disclosures tied to projections of life expectancies, Life Partners said in a regulatory filing. The company said it believes claims aren’t warranted.

Nvidia Corp. (NVDA US) dropped 11 percent, the most in the S&P 500, to $18.26. The maker of three dimensional graphics processors’ forecast was cut to “hold” from “buy” at Needham & Co., which cited slower growth in the company’s graphics processing unit business and increased competition in the tablet computer and smartphone markets, among other things.

Rambus Inc. (RMBS US) fell 18 percent, the most in the Russell 1000 Index, to $15.83. A U.S. appeals court agreed that the company, which sells technology used in computer memory, destroyed documents relevant to patent infringement cases with Micron Technology Inc. (MU US) and Hynix Semiconductor Inc. (HXSCL US) and sent the cases back to a lower court to determine appropriate sanctions.

Synergy Pharmaceuticals Inc. (SGYP US) rose 22 percent, the most since March 4, to $3.70. The biopharmaceutical company was rated “buy” in new coverage by Morgan Joseph TriArtisan Group Inc., which said the company “represents a unique investment opportunity in the gastrointestinal disorders space.” Inc. (TREE US) surged 17 percent, the most since May 2009, to $6.33. The online mortgage lender agreed to sell its home-lending business to Discover Financial Services (DFS US) for $55.9 million.

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