The Russell 2000 Index climbed for the first time this week, adding 0.4 percent to 723.51. The Standard & Poor's 500 Index (SPX), whose companies have a median market value 22 times larger than the Russell 2000's, advanced 0.4 percent. The stock indexes have declined 5.6 percent and 13 percent, respectively, this year.
The Amex Airline Index slumped 4.1 percent, the biggest drop in four days, after oil jumped 1 percent to $116.27 a barrel.
UAL Corp. (UAUA US) fell the most in the measure of 14 airline stocks, losing 8.4 percent to $11.15. Alaska Air Group Inc. (ALK) dropped 6.9 percent to $18.90. US Airways Group Inc. (LCC) retreated 5.7 percent to $7.34.
Comverge Inc. (COMV US) rose 12 percent, the most since April 16, to $6.72. The maker of technology to reduce electricity demand was rated ``buy'' in new research coverage by Jefferies Group Inc. analysts.
Corinthian Colleges Inc. (COCO) dropped the most in seven months, losing 19 percent to $13.09. The for-profit operator of North American colleges and trade schools increased lending to students, raising concern that costs will erode earnings.
Cott Corp. (COT) lost the most in six months, sliding 17 percent to $2.06. North America's biggest provider of store-brand soft drinks said full-year profit may fall more than it expected because of declining sales volume. The company withdrew its 2009 operating-earnings target.
Sanderson Farms Inc. (SAFM) had the steepest drop in four years, losing 11 percent to $35.21. The fourth-biggest U.S. chicken producer said it will need ``divine intervention'' to make a profit in the current quarter. Analysts polled by Bloomberg estimated earnings, excluding one-time items, of 38 cents a share.
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