Bank of America, Dolby, Southwest, Sunoco: 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.

Financial stocks declined as a slowing U.S. economy, Europe’s debt crisis and losses linked to souring home loans threatened to undermine their earnings. Bank of America Corp. (BAC US) lost 7.5 percent to $8.17, the worst performance in the Dow Jones Industrial Average. Citigroup Inc. (C US) declined 3.9 percent to $33.44.

M&T Bank Corp. (MTB US) slid 3 percent to $78.65. NYSE Euronext (NYX US) lost 4.1 percent to $28. Charles Schwab Corp. (SCHW US) dropped 3.7 percent to $13.66.

American Science and Engineering Inc. (ASEI US) fell 16 percent, the most since August 2006, to $59.71. The maker of detecting equipment for security inspections said first quarter earnings were 61 cents a share, missing the average estimate of 98 cents a share by four analysts in a Bloomberg survey.

Brocade Communications Systems Inc. (BRCD US) fell 28 percent, the most since the company went public in 1999, to $3.52. The maker of switches for data-storage networks reported preliminary revenue and profit that fell short of its previous forecast.

CF Industries Holdings Inc. (CF US) gained 3.6 percent, the most since June 21, to $146.66. The fertilizer producer raised its dividend to 40 cents a share, compared with a 10-cent estimate. The company also posted second-quarter earnings that beat the average analyst estimate, data compiled by Bloomberg show.

Cogo Group Inc. (COGO US) lost 38 percent, the most since July 2008, to $2.88. The provider of software to Chinese makers of phones and consumer electronics forecast third-quarter adjusted earnings would be no more than 16 cents a share. Analysts estimate 24 cents, according to the average of a Bloomberg survey.

CoreLogic Inc. (CLGX US) fell 31 percent, the most since at least February 2008, to $9.92. The real estate and financial information company reported second-quarter sales that missed analysts’ estimates. Bank of America Corp. cut the stock’s rating to “neutral” from “buy.”

Dolby Laboratories Inc. (DLB US) fell 18 percent, the most since its 2005 initial public offering, to $30.89. The maker of audio systems said its decoder is being dropped from Microsoft Corp.’s Windows 8. About $120 million in revenue may be at risk, according to Collins Stewart analyst John Vinh, who cut the stock to “neutral” from “buy.” Avondale Partners LLC and William Blair & Co. lowered their ratings on the San Francisco-based company to “market perform”.

EOG Resources Inc. (EOG US) climbed 4.1 percent to $95.92 for the biggest gain since July 15. The natural gas and crude oil company reported second-quarter profit excluding some items of $1.11 a share, beating the average analyst estimate by 41 percent, according to Bloomberg data.

Fluor Corp. (FLR US) rose 4.6 percent, the most since May 6, to $57.11. The largest publicly traded U.S. construction company had second-quarter adjusted earnings of 94 cents a share, exceeding the 81-cent average analyst projection, data compiled by Bloomberg show.

Hansen Natural Corp. (HANS US) jumped 8.4 percent, the most since August 2009, to $75.92. The maker of Monster Energy drinks said second quarter earnings minus some items were 90 cents a share, compared with the average analyst estimate of 84 cents a share.

Imperial Sugar Co. (IPSU US) tumbled 59 percent to $9.44 for the biggest decline in the Russell 2000 Index. The Sugar Land, Texas-based company reported a third-quarter loss of $1.35 a share on higher sugar costs. (PCLN US) jumped 9.2 percent, the most in the Standard & Poor’s 500 Index, to $527.81. The biggest U.S. online travel agency by market value forecast third-quarter profit that topped analysts’ estimates as the European hotel business gains customers.

SandRidge Energy Inc. (SD US) fell 20 percent, the most since November 2008, to $7.79. The oil and natural gas producer said that, excluding some items, it broke even in the second quarter. Analysts estimated profit of 3 cents a share, excluding some items, according the average projection to a Bloomberg survey.

Southwest Airlines Co. (LUV US) declined 4.2 percent to $8.47, the lowest price since November 2009. The Dallas-based airline may lead U.S. carriers in rolling back a fare increase now that the Federal Aviation Administration can resume collecting ticket taxes and fees, ending a two-week industry windfall.

St. Joe Co. (JOE US) rallied 3.2 percent, the most since June 29, to $16.90. The largest landholder in northern Florida said it will invest $30 million in three projects.

Sunoco Inc. (SUN US) declined 5.2 percent to $34.01, the lowest price since Sept. 23. The Philadelphia-based refinery reported second-quarter adjusted earnings of 40 cents a share, missing the average analyst estimate of 44 cents.

WMS Industries Inc. (WMS US) dropped 28 percent, the most on record, to $18.22. The maker of Monopoly and Wizard of Oz slot machines reduced its fiscal 2012 sales forecast and said it will cut about 10 percent of its workforce.

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