Check out which companies are making headlines before the bell on Wednesday:
Boeing — The aerospace giant earned $1.67 per share, excluding certain items, for the second quarter, beating estimates of $1.58. Boeing's revenue also beat forecasts, and the jet maker raised its yearly earnings forecast as well, as Boeing's backlog grows to a record $410 billion.
Caterpillar — The manufacturing company reported second quarter profit of $1.45 per share, well short of estimates of $1.70. Revenue fell short as well, as did the heavy equipment maker's full-year forecast. CEO Doug Olberhelman said the company experienced a number of headwinds during the quarter, but that he expects improvement during the second half of the year.
Ford Motor — Ford earned 45 cents per share for the second quarter, beating estimates of 37 cents per share, with revenues exceeding consensus as well. The automaker's results were driven by strong pickup truck demand in North America and record profits in the Asia-Pacific region.
PepsiCo — The beverage and snack maker reported second quarter profit of $1.31 per share, excluding certain items, beating estimates of $1.19. Revenue also beat forecasts, and Pepsi's profit margins expanded by 120 basis points during the quarter.
Northrop Grumman, General Dynamics — Recent strength in defense stocks could get even more momentum today, as both Northrop Grumman and General Dynamics beat estimates with their Q2 earnings reports. Northrop Grumman earned $2.05 per share, besting estimates of $1.71, while General Dynamics posted profit of $1.81 per share, 19 cents above estimates.
WellPoint —The health insurer earned $2.60 per share, excluding certain items, for the second quarter, well above estimates of $2.11. It also raised its forecast for the year, as medical costs come down and its Medicaid business improves following last year's purchase of Amerigroup.
Apple – The iPhone and iPad maker reported fiscal third quarter profit of $7.47 per share, above estimates of $7.32, with revenue also topping consensus. However, Apple's current quarter revenue forecast is below estimates.
AT&T – The wireless company earned 67 cents per share, excluding certain items, for the second quarter, missing estimates by a penny, while revenue was slightly above expectations. AT&T did see gains in its wireless and enterprise businesses, but the bottom line was impacted by the subsidies required to gain new wireless customers.
VMWare – VMWare reported second quarter profit of 79 cents per share, two cents above estimates. The cloud software producer also raised its full year revenue outlook, based on the expectation of stronger second half business from both business and government customers.
Panera Bread – The sandwich-making company earned $1.74 per share for the second quarter, falling short of estimates by three cents. Revenue was shy of consensus as well, and the restaurant chain cut its full year forecast because of a growth shortfall at company-owned locations.
Juniper Networks – The company reported second quarter profit of $0.29 per share, four cents above estimates, with revenue also topping consensus. The maker of networking equipment also announced that CEO Kevin Johnson plans to retire, as well as unveiling a $1 billion stock buyback.
Electronic Arts – EA lost 40 cents per share for its first quarter, excluding certain items, a smaller loss than Wall Street had expected. Revenue topped estimates by a wide margin, as the video game maker was able to implement cost controls and see gains in digital sales.
Broadcom — Broadcom beat estimates by two cents with second quarter profit of 70 cents per share, excluding certain items. However, its current quarter revenue outlook falls short of forecasts, sparking concerns about the chipmaker's prospects in a slowing smart phone market.
Polycom — CEO Andrew Miller has resigned following the discovery of accounting irregularities in his expense reports. The maker of videoconferencing equipment said Miller has accepted responsibility for the reports, and that this will not have a material effect on the company's results.
Norfolk Southern – The company missed estimates by three cents with its second quarter profit of $1.46 per share. The rail operator's results were impacted by a drop in coal shipment demand.
Illumina – Illumina earned 43 cents per share for the second quarter, four cents above estimates, with revenues scoring a solid beat as well. The company, which specializes in gene sequencing, also raised its revenue outlook.
(Read More: See CNBC's Market Insider Blog)
—By CNBC's Peter Schacknow
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