Nov. 4 (Bloomberg) -- The following companies are having unusual price changes in U.S. trading today. Stock symbols are in parentheses, and share prices are as of 4 p.m. in New York.

Amylin Pharmaceuticals Inc. (AMLN US) retreated 26 percent to $7.94, the most since January 1999. U.S. regulators said data submitted for the once-weekly version of the diabetes drug Byetta didn't demonstrate the product is comparable to the standard version.

Archer-Daniels-Midland Co. (ADM US) gained 15 percent to $24.33. The world's largest grain processor reported first- quarter profit, excluding some items, of $1.62 a share, beating the average analyst estimate of 72 cents a share, according to Bloomberg data.

Automatic Data Processing Inc. (ADP US) rose 8.9 percent to $36.23. The world's biggest payroll manager posted fiscal first- quarter profit of 54 cents a share, exceeding the average analyst estimate from a Bloomberg survey. The company also reaffirmed its 2009 earnings forecast.

CIT Group Inc. (CIT US) gained the most on the Standard & Poor's 500 Index, adding 36 percent to $6.15. The U.S. Treasury may broaden the scope of its $700 billion rescue package and take equity stakes in bond insurers and specialty finance firms such as CIT, a century-old commercial lender, the Wall Street Journal reported.

General Electric Co.'s GE Capital also may be included, the Journal said. GE (GE US) gained the second most on the Dow Jones Industrial Average, climbing 7.6 percent to $20.77.

Coldwater Creek Inc. (CWTR US) slid 24 percent to $2.59, the most since Jan. 15. The clothing retailer for women 35 and older cut its forecast for the third quarter and withdrew its fourth- quarter forecasts, citing the ``unprecedented consumer environment.'' The company also lowered the number of stores it plans to open in 2009 to 15 from 40.

Dean Foods Co. (DF US) slumped 18 percent to $18.25, the most since April 2007. The biggest U.S. dairy processor reported third-quarter profit, excluding some items, of 28 cents a share, missing the average analyst estimate by 9.1 percent, according to Bloomberg data.

Deere & Co. (DE US) added 9 percent to $42.54. The financial health of the U.S. farmer has ``probably never been better'' amid good harvests and lower debt, said Robert Lane, chief executive officer of the world's largest maker of farm equipment, on CNBC's ``Mad Money'' television show.

Caterpillar Inc. (CAT US), the world's largest maker of bulldozers and excavators, rallied 8.3 percent to $42.25, for the biggest gain on the Dow Jones Industrial Average.

Emerson Electric Co. (EMR US) added 10 percent to $35.86. The world's largest maker of power equipment for oil companies posted fourth-quarter profit of 88 cents a share, beating the average analyst estimate by 2.2 percent. Emerson said fourth- quarter profit increased 10 percent as it won contracts to provide software that helps manage plants in China and Thailand.

Expeditors International of Washington Inc. (EXPD US) gained 18 percent to $37.75. The cargo shipments manager reported third- quarter profit of 39 cents a share, topping the 37-cent average estimate of analysts surveyed by Bloomberg.

FirstEnergy Corp. (FE US) added 7.4 percent to $57.16. The owner of electric utilities in Ohio, Pennsylvania and New Jersey reported third-quarter profit, excluding some items, of $1.54 a share, beating the average analyst estimate by 7.5 percent according to Bloomberg data. Profit increased on higher prices, the company said.

Fluor Corp. (FLR US) gained 14 percent to $42.58. The largest publicly traded U.S. engineering firm was added to the focus list at JPMorgan Chase & Co., which said the short-term and long-term fundaments of its oil, gas and power business ``remain strong.''

FCStone Group Inc. (FCSX US) was the second-biggest loser on the Russell 2000 index, sliding 39 percent to $3.75. The commodity researcher and brokerage was cut to ``neutral'' at Bank of America Corp. after the company said it expects a $25 million bad debt expense. Bank of America also lowered its price forecast to $4.50.

Health Net Inc. (HNT US) declined 18 percent to $10.88. The provider of individual and government health-care benefits cut its 2008 earnings forecast and gave a fourth-quarter earnings forecast below the average analyst estimate, according to a Bloomberg survey.

Herbalife Ltd. (HLF US) fell 24 percent to $19.46, the most since January 2007. The seller of nutritional and weight-loss supplements lowered its forecast for the year to below analyst estimates, citing foreign exchange rates. The company also forecast 2009 earnings below estimates.

Kenexa Corp. (KNXA US) fell 23 percent to $6.85, the lowest since June 2005. The employee recruiter was cut to ``hold'' from ``buy'' at Jefferies Group Inc., which cited falling margins and disappointing third-quarter earnings, excluding some items. Jefferies also cut its price target and earnings estimates.

Mastercard Inc. (MA US) rallied 18 percent to $170.24, the most in a year. The world's second-biggest credit-card network posted third-quarter profit excluding some items of $2.47 a share, exceeding the average analyst estimate by 11 percent. A settlement with Discover Financial Services allows Mastercard to focus on expanding credit and debit-card revenue amid the economic slowdown.

Orient-Express Hotels Ltd. (OEH US) lost 17 percent to $9.70. The owner of more than 40 hotels posted third-quarter earnings excluding some items that missed the average analyst estimate. The company also said it will suspend its quarterly dividend and defer $30 million in capital spending for 12 months.

Otter Tail Corp. (OTTR US) slumped 12 percent to $21.20. The provider of electricity and energy services in the upper Midwest cut its 2008 earnings estimates, citing economic conditions. The company had lowered the forecast twice before, once in August because of ``growing pains'' from its wind tower unit and an adverse energy rate ruling and once in September because of cooler weather and increased startup costs.

Perot Systems Corp. (PER US) slid 10 percent to $12.93. The computer-services consultant founded by former U.S. presidential candidate H. Ross Perot forecast sales and profit that missed analysts' estimates.

PPL Corp. (PPL US) retreated 7.6 percent to $30. The owner of Pennsylvania's second-biggest utility reported third-quarter profit, excluding some items, of 46 cents a share, missing the average analyst estimate of 61 cents a share, according to Bloomberg data. PPL cut its full-year forecast, partly on lower energy margins.

Principal Financial Group Inc. (PFG US) rose 23 percent to $27.50. The life insurer that cut its dividend in half last month is eligible to participate in ``certain government programs'' as its holding company is regulated as a savings and loan, Chief Executive Officer Larry Zimpleman said.

Sun Hydraulics Inc. (SNHY US) declined 20 percent to $16.15, the most in three years. The maker of screw-in hydraulic cartridge valves and manifolds forecast 2008 earnings below the average analyst estimate.

Talisman Energy Inc. (TLM US) advanced 12 percent to $11.04. The oil and natural-gas producer with about two-thirds of its reserves in North America or the North Sea said third-quarter profit more than quadrupled on record crude-oil prices and a gain on commodities contracts.

Tenet HealthCare Corp. (THC US) slid 37 percent to $2.61, the most in six years. The owner or operator of general acute care and specialty hospitals in a dozen states posted a third- quarter loss excluding some items that missed the average analyst estimate, and said its lowered 2008 earnings forecast reflects a ``weakening economic environment.''

TNS Inc. (TNS US) retreated 27 percent to $9.91, the most since March 2004. The credit-card payment processor cut its 2008 earnings forecast to below the average analyst estimate, citing foreign currency changes.

Viacom Inc. (VIA/B US) climbed 9.4 percent to $21.86. The media company controlled by Sumner Redstone posted third-quarter profit excluding some items of 55 cents a share, beating the average analyst estimate. The company also reiterated its forecast for full-year adjusted earnings.

To contact the reporters on this story: Elizabeth Campbell in New York at ecampbell11@bloomberg.net; Whitney Kisling in New York at wkisling@bloomberg.net

Last Updated: November 4, 2008 16:36 EST