The world's largest retailer reported a smaller-than-expected increase for sales in stores open at least a year, as tax-rebate checks dried up.

American International Group Inc., down $5.25 at $23.84

The world's largest insurer lost more than $5 billion in the second quarter, as its credit default swaps portfolio and other investments lost value.

Citigroup Inc., down $1.23 at $18.47

In a settlement worth more than $7 billion, the bank agreed to pay penalties and will buy back auction-rate securities from about 40,000 customers nationwide.

Abercrombie & Fitch Co., down $5.93 at $49.80

Due to weaker-than-expected July sales, the teen clothing retailer lowered its second-quarter profit outlook below Wall Street estimates.

Cardinal Health Inc., down 88 cents at $53.63

The diversified health-care company missed estimates with quarterly profit and sales and gave a weaker-than-expected 2009 outlook on planned investments.

Martin Marietta Materials Inc., down $5.74 at $103.11

The construction materials maker reported a 23-percent fall in quarterly profit and slashed its 2008 outlook amid rising energy costs and weak building demand.

Dynegy Inc., down 21 cents at $6.13

The power producer reported a second-quarter loss due to flooding in the Midwest, which disrupted deliveries, and mark-to-market losses on investments.

Verisign Inc., down $4.31 at $29.57

Second-quarter loss widened from a year ago as the Internet infrastructure company absorbed the costs of a sweeping reorganization.

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Story Source: Providence Journal