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.
1-800-Flowers.com Inc. (FLWS US) gained 9.8 percent, the most since May 12, to $2.80. The seller of flowers and gifts on the Internet and by telephone reported second-quarter revenue of $235.4 million, beating the average analyst estimate in a Bloomberg survey of $219 million.
Amylin Pharmaceuticals Inc. (AMLN US) rose 7.7 percent to $16.44, the highest price since Oct. 19. The San Diego-based maker of the diabetes treatment Byetta reported a loss of 8 cents a share, narrower than the 31-cent loss projected by analysts on average.
Arctic Cat Inc. (ACAT US) rallied 18 percent to $16.13, the highest price since October 2007. The maker of all-terrain recreation vehicles increased its full-year forecast, projecting profit of at least 57 cents a share.
AT&T Inc. (T US) lost 2.1 percent to $28.13 for the second-biggest retreat in the Dow Jones Industrial Average. The second-largest U.S. wireless carrier reported fourth-quarter sales of $31.4 billion. Analysts predicted $31.5 billion.
Cypress Semiconductor Corp. (CY US) rose 7.5 percent to $21.94 and climbed to $22.05 earlier, the highest intraday price since it went public in 1986. The San Jose, California-based maker of chips for hand held devices said ON Semiconductor Corp. (ONNN US) agreed to acquire the CMOS Image Sensor Business Unit from Cypress in an all cash transaction for $31.4 million.
E*Trade Financial Corp. (ETFC US) rose 6 percent to $16.74, the highest price since May 3. The fourth-largest U.S. retail brokerage by client assets added more accounts and assets in the fourth quarter, overshadowing its unexpected loss.
El Paso Corp. (EP US) climbed 7.8 percent to $15.58, the highest price since September 2008. The owner of the longest U.S. natural-gas pipeline network forecast “double-digit” earnings growth in 2012.
Gentex Corp. (GNTX US) jumped 8.5 percent to $33.50, the highest price since at least January 1986. The supplier of vehicle mirrors forecast first-quarter sales of at least $241.5 million, exceeding the average analyst estimate of $220.5 million in a Bloomberg survey.
Greenhill & Co. (GHL US) dropped 9.8 percent, the most since November 2008, to $73.97. The merger adviser founded by Robert Greenhill posted earnings excluding some items of 6 cents a share in the fourth quarter, missing the average analyst estimate by 88 percent.
Hanmi Financial Corp. (HAFC US) surged 22 percent to $1.43 for the biggest increase in the Russell 2000 Index. The holding company for Hanmi Bank in Southern California said it earned 4 cents a share in the fourth quarter, its first profit since the three months ended September 2008.
Hawkins Inc. (HWKN US) dropped 16 percent, the most since November 1991, to $38.82. The maker of laboratory and industrial chemicals said third-quarter net income declined to 41 cents a share from 54 cents a year earlier.
Helmerich & Payne Inc. (HP US) gained 9.5 percent to $56.74, the highest price since August 2008. The Tulsa, Oklahoma-based oil-and-gas drilling company posted first-quarter profit excluding some items of 96 cents a share, topping the average analyst estimate by 17 percent, according to data compiled by Bloomberg.
Motorola Mobility Holdings Inc. (MMI US) dropped 12 percent to $30.51 for the biggest loss in the Standard & Poor’s 500 Index. The smartphone maker spun off from Motorola Inc. reported fourth-quarter earnings of 37 cents a share, matching the average estimate of analysts.
Murphy Oil Corp. (MUR US) fell the second-most in the S&P 500, sinking 10 percent to $65.74. The operator of gasoline filling stations said fourth-quarter earnings were 90 cents a share, missing the average analyst estimate of $1.01 a share, according to a Bloomberg survey.
Netflix Inc. (NFLX US) surged 15 percent to $210.89 for the biggest advance in the S&P 500. The DVD-rental and streaming company posted fourth-quarter earnings of 87 cents a share, exceeding the 71-cent average estimate of analysts.
Netflix was raised to “buy” from “underperform” at Bank of America Corp.
ProLogis (PLD US) surged 7.8 percent to $15.80 after jumping to $12.38 earlier, the highest intraday price since January 2009. The world’s largest warehouse operator is in talks to combine with rival AMB Property Corp. (AMB US) that would create a $14 billion real estate investment trust. The two companies are considering an all-stock, at-market transaction at a price based on the value of their shares before a newspaper report about a possible deal yesterday. The transaction would be a “merger of equals,” ProLogis and AMB said in a statement yesterday. AMB rose 6.3 percent to $34.94.
Procter & Gamble Co. (PG US) fell 2.9 percent to $64.18 for the biggest retreat in the Dow average. The maker of Ivory soap and Old Spice shaving products reported fiscal second-quarter sales of $21.35 billion, missing the average analyst estimate in a Bloomberg survey of $21.57 billion.
Quantum Corp. (QTM US) slumped 16 percent to $3.01 for the biggest drop in the Russell 2000 Index. The San Jose, California-based maker of backup and archival programs for computers forecast fourth-quarter earnings excluding some items of 5 cents a share at most, trailing the 9-cent average analyst estimate in a Bloomberg survey.
Qualcomm Inc. (QCOM US) rose 5.9 percent to $54.90, the highest price since August 2008. The biggest maker of mobile-phone chips reported first-quarter adjusted earnings of 82 cents a share, beating the 72-cent average estimate of analysts.
Robert Half International Inc. (RHI US) slumped 6.3 percent, the most since June 4, to $31.56. The staffing company forecast net income of 13 cents to 18 cents a share in the first quarter. Analysts, on average, estimated 19 cents, according to a Bloomberg survey.
Stanley Black & Decker Inc. (SWK US) rose 8.5 percent to $72.62, the highest price since at least 1980. The U.S. toolmaker reported fourth-quarter earnings of $1.05 a share excluding certain items, beating the average analyst estimate in a Bloomberg survey of 91 cents a share.
Teradyne Inc. (TER US) jumped 12 percent to $16.35, the second-biggest gain in the Standard & Poor’s 500 index. The maker of testing equipment for electronics forecast first-quarter profit excluding some items of at least 33 cents a share, topping the average analyst estimate of 19 cents in a Bloomberg survey.
Zimmer Holdings Inc. (ZMH US) rose 6.9 percent, the most since November 2008, to $59.08. The world’s biggest maker of artificial hip and knee joints reported fourth-quarter profit excluding some items of $1.27 a share, beating the average analyst estimate by 6.8 percent.