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.
Aecom Technology Corp. (ACM US) slumped 13 percent, the most since October 2008, to $19.60. The Los Angeles, California-based architectural and engineering company reduced its full-year profit forecast to $2.45 a share at most. Analysts, on average, estimated $2.53, according to a Bloomberg survey.
Allstate Corp. (ALL US) rose 4 percent to $34.23, the highest price since May 2011. The largest publicly traded U.S. home and auto insurer said first-quarter profit rose 46 percent as costs tied to natural disasters declined.
Apache Corp. (APA US) fell 3.8 percent, the most since Dec. 14, to $91.96. The largest U.S. independent oil and natural-gas producer by market value reported first-quarter earnings excluding some items of $3 a share, missing the average analyst estimate of $3.07.
Atlantic Tele-Network Inc. (ATNI US) gained 18 percent, the most since June 2009, to $39.71. The telecommunications services provider reported first-quarter net income per share that beat the average analyst estimate by 36 percent.
Atmel Corp. (ATML US) fell 13 percent, the most since Aug. 4, to $7.79. The maker of chips for household appliances forecast second-quarter sales will grow 6 percent at most. Analysts estimated an increase of 8 percent.
Cablevision Systems Corp. (CVC US) fell 7.9 percent, the most since Feb. 28, to $13.54. The fifth-largest U.S. cable provider by subscribers said discounting led to bigger drop in cash flow than some analysts estimated.
CACI International Inc. (CACI US) slid 16 percent, the most since April 2002, to $51.52. The provider of professional services and technology consulting to the U.S. government reduced its annual sales forecast.
Callidus Software Inc. (CALD US) fell 21 percent, the most since June 2004, to $6.10. The Pleasanton, California-based software company reported a first-quarter loss wider than analysts projected and said second-quarter revenue would be $22.5 million to $23.5 million. Analysts project $23.52 million on average, according to data compiled by Bloomberg.
Green Mountain Coffee Roasters Inc. (GMCR US) plummeted 48 percent, the most in the Russell 1000 Index, to $25.87. The maker of Keurig coffee machines said profit this year will be less than it previously expected amid the slowest sales growth in five years.
Health Net Inc. (HNT US) tumbled 25 percent, the most since 1992, to $27.26. The insurer said 2012 earnings would be lower than forecast as a change in the way claims are processed required that more money be set aside to pay them.
Kensey Nash Corp. (KNSY US) surged 32 percent to $38.33, the highest price since it went public in 1995. The medical device maker agreed to be bought by Royal DSM NA for $360 million in cash, or $38.50 a share.
Kit Digital Inc. (KITD US) tumbled 30 percent to $4.42, the lowest price since December 2008. The maker of online video software reported first-quarter sales of $59 million, trailing the average analyst estimate of $72.4 million in a Bloomberg survey.
MicroStrategy Inc. (MSTR US) rose 10 percent, the most since January 2011, to $156.24. The maker of analytical software reported first-quarter sales that exceeded analysts’ estimates.
Multimedia Games Inc. (MGAM US) rallied 17 percent to $13.71, the highest price since May 2006. The slot machine maker boosted its full-year earnings forecast to at least 72 cents a share. Analysts estimated 46 cents, according to the average estimate in a Bloomberg survey.
Prudential Financial Inc. (PRU US) lost 10 percent, the most since Aug. 8, to $54.81. The second-biggest U.S. life insurer posted a first-quarter loss as the value of the company’s derivative contracts fell.
Rofin-Sinar Technologies Inc. (RSTI US) fell 10 percent to $23.12, the lowest price since Dec. 30. The developer of laser-based cutting and welding tools projected third-quarter earnings of no more than 30 cents per share. The average analyst estimate is 37 cents.
Scripps Networks Interactive Inc. (SNI US) jumped 7.5 percent, the most since Aug. 9, to $54.53. The owner of Food Channel reported first-quarter earnings of 73 cents a share, beating the average analyst estimate by 21 percent, according to data compiled by Bloomberg.
Teradata Corp. (TDC US) advanced 6.9 percent to $77.14, the highest price since at least September 2007. The data-storage software company increased its 2012 sales and earnings forecasts.
ValueClick Inc. (VCLK US) declined 22 percent, the most since August 2004, to $16.80. The Internet advertising company forecast second-quarter sales of no more than $160 million, falling short of the average analyst estimate of $167.9 million.
Viacom Inc. (VIAB US) rallied 3.4 percent, the most since Feb. 3, to $49.02. The owner of the Paramount film studio and MTV, Nickelodeon and Comedy Central cable channels reported fiscal second-quarter earnings that exceeded analysts’ estimates on higher fees from pay-TV systems.
Weight Watchers International Inc. (WTW US) plunged 18 percent, the most since its initial public offering in 2001, to $62.29. The diet center reported quarterly profit that missed analysts’ estimates, citing challenges in its core meetings business.
Whole Foods Market Inc. (WFM US) increased 7.6 percent to $90.69 for the biggest gain in the Standard & Poor’s 500 Index. The largest U.S. natural-goods grocer posted second-quarter profit that topped analysts’ estimates on increased demand for organic foods.
Zillow Inc. (Z US) climbed 12 percent, the most since Aug. 25, to $40.40. The real estate website forecast second-quarter revenue of at least $25.5 million, surpassing the average analyst estimate of $24.8 million.