What follows is a roundup of corporate earnings reports for Tuesday, July 27.
DuPont and Lockheed Martin reported earnings before the bell.
Norfolk Southern and Dreamworks Animation reported earnings after the bell.
BEFORE THE BELL
DuPont
The chemical company posted earnings of $1.17 a share on revenue of $8.62 billion.
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Amerisource Bergen
The drug retailer announced earnings of 52 cents a share on revenue of $19.60 billion.
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Invesco
The asset manager posted earnings of 27 cents a share on revenue of $787 million.
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L-3 Communications
The government services firm reported earnings of $2.04 a share on revenue of $3.97 billion.
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Lockheed Martin
The defense contractor posted earnings of $1.96 a share on revenue of $11.44 billion.
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Nasdaq OMX
The global exchange posted earnings of 52 cents a share on revenue of $390 million.
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Occidental Petroleum
The oil and gas company posted earnings of $1.31 a share on revenue of $4.76 billion.
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Region's Financial
The bank posted a loss of 11 cents a share on revenue of $1.61 billion.
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SAP
The software giant posted earnings of 62 cents a share on revenue of $3.74 billion.
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Teva Pharmaceuticals
The pharmaceutical company announced earnings of $1.08 a share on revenue of $3.80 billion.
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Thermo Fisher Scientific
The medical equipment maker posted earnings of 84 cents a share on revenue of $2.65 billion.
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Under Armour
The athletic apparel maker delivered earnings of 7 cents a share on revenue of $204.79 million.
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US Steel
The steel manufacturer announced earnings of 45 cents a share on revenue of $4.68 billion.
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Valero Energy
The gasoline retailer reported earnings of 37 cents a share on revenue of $1.27 billion.
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Western Union
The money transfer company posted earnings of 37 cents a share on revenue of $1.27 billion.
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AFTER THE BELL
Aflac
The insurance company posted earnings $1.35 a share on revenue of $5.07 billion.
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Dreamworks Animation
The entertainment company delivered earnings of 27 cents a share on revenue of $158.10 million.
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Norfolk Southern
The railroad posted earnings of $1.04 a share on revenue of $2.43 billion.
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* Earnings data from Thomson Reuters excludes extraordinary items.