Stocks & Markets December 17, 2009, 11:22AM EST

Stocks on the Move: Citigroup, FedEx, LDK Solar

Plus more stocks making headlines in Thursday's market

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Dec. 17 (Bloomberg) -- Shares of the following companies are having unusual moves in U.S. trading. Stock symbols are in parentheses, and prices are as of 11 a.m. in New York.

Allegheny Technologies Inc. (ATI) rose the most in the Standard & Poor's 500 Index, jumping 6.5 percent to $40.73. The specialty-metals producer said it will earn at least 20 cents a share in the fourth quarter. Analysts surveyed by Bloomberg had estimated profit of 3 cents on average.

A123 Systems Inc. (AONE) advanced 8.1 percent to $19.81 after rising earlier to $20.50, the highest intraday price since Nov. 2. SAIC Motor Corp., China's biggest automaker, said it will set up a $20 million venture with A123 to make batteries for electric vehicles.

A-Power Energy Generation Systems Ltd. (APWR) climbed 7.9 percent to $20.15 and jumped earlier to $20.56, the highest intraday price since September 2008. The Chinese power system manufacturer said it signed an agreement in which it will supply turbines for a 600 megawatt wind farm in West Texas.

Cedar Fair LP (FUN) surged 24 percent to $11.23 and rallied as much as 24 percent, the most intraday since October 2008. The operator of the Cedar Point amusement park agreed to be purchased for $11.50 a share, or 27 percent more than yesterday's closing price, by Apollo Global Management LLC.

Citigroup Inc. (C) had the second-steepest retreat in the S&P 500, dropping 7.5 percent to $3.19. The recipient of the biggest U.S. bank bailout sold 5.4 billion shares at $3.15 apiece, less than the $3.25 the government paid when it acquired a one-third stake in the company in September.

Delta Petroleum Corp. (DPTR) added 6.3 percent to $1.36 and advanced earlier to $1.48, the highest intraday price since Oct. 27. The oil and gas producer backed by billionaire Kirk Kerkorian said it signed a settlement agreement with the U.S. government concerning Lease 452 located offshore of California that will result in $65 million payment to the company.

Discover Financial Services (DFS) dropped 8 percent to $15.11 for the biggest loss in the S&P 500. The credit-card lender that took $1.2 billion from the U.S. bank bailout fund said profit fell 16 percent in the fourth quarter as credit-card defaults increased.

EZchip Semiconductor Ltd. (EZCH) fell 8 percent to $10.63 and declined earlier to $10.55, the lowest intraday price since March 10. The maker of network processors sold 3.86 million shares at $10.50 each from funds affiliated with Goldman Sachs and JK&B Capital.

FedEx Corp. (FDX) lost 5.3 percent to $85.20 and fell 5.4 percent earlier, the most intraday since May 21. The second- largest U.S. package-shipping company forecasts earnings for the quarter ending in February won't exceed 70 cents a share. Analysts expected 84 cents, based on the average of 17 estimates compiled by Bloomberg.

General Growth Properties Inc. (GGWPQ) rose 6.1 percent to $9.35. The mall owner seeking to emerge from bankruptcy next year said it will consider all offers for the company and may sell shares to the public to raise capital.

GeoEye Inc. (GEOY) tumbled the most in Russell 2000 Index, sliding 18 percent to $25.95. The provider of satellite imagery said it detected "an irregularity" in the equipment GeoEye-1 uses to point the antenna that transmits imagery to receiving stations on the ground.