Check out which companies are making headlines before the bell:
Coca-Cola — The beverage maker reported adjusted quarterly earnings of 49 cents per share, beating Street forecasts by a penny a share. Revenue was also above estimates. Coke said it's had 4 percent organic sales growth so far this year, and has also seen margins expand more than 50 basis points.
Comcast — The NBCUniversal and CNBC parent reported quarterly profit of 92 cents per share, beating estimates by one cent a share. Revenue was above estimates, as well. Comcast said that the Rio Olympics were the most profitable in its history, and also reported upbeat result for cable and for video subscriptions.
Boeing — Boeing beat estimates by 21 cents a share, with adjusted quarterly profit of $2.81 per share. Revenue also beat forecasts, and the aircraft maker raised its full-year revenue and profit forecast.
Northrop Grumman — The defense contractor earned an adjusted $3.02 per share for the third quarter, above estimates of $2.81 a share. Revenue also beat Street forecasts and the company raised its full year 2016 earnings forecast above consensus estimates thanks to improved aerospace sales.
Southwest Airlines — The airline came in five cents a share above Street estimates, with adjusted quarterly profit of 93 cents per share. Revenue was slightly shy of estimates, however. Southwest benefited from lower fuel prices and record traffic, but the shares were under pressure in premarket trading because of lower-than-expected growth in the key metric of revenue per available seat mile.
Garmin — The maker of wearable fitness devices came in 21 cents a share above estimates, with adjusted earnings of 75 cents per share. Revenue was also well above estimates on strong growth in its fitness, outdoor, marine, and aviation categories.
Apple — Apple reported quarterly profit of $1.67 per share, a penny a share above estimates. Revenue was in line with forecasts, but it did post its first year-over-year decline in profit and revenue since 2001. The company predicted a return to profit growth in the current quarter, helped by iPhone 7 sales.
Chipotle Mexican Grill — The restaurant chain saw revenue fall shy of analysts' estimates for its latest quarter, with comparable sales falling a greater-than-expected 21.9 percent. Chipotle gave a somewhat optimistic current-quarter projection for comparable sales, however, saying they would come in down in the low single digits.
Panera Bread — Panera beat estimates by three cents a share, with adjusted quarterly profit of $1.37 per share. The restaurant chain's revenue also exceeded forecasts. Panera raised its profit forecast, as well, as it continues to enjoy the benefit of higher prices.
Generac — The maker of commercial and residential generators beat estimates by five cents a share, with quarterly profit of 82 cents per share. Revenue was also above forecasts. Generac increased its fiscal 2016 outlook for residential sales, helped by an increase in power outages.
Edwards Lifesciences — Edwards reported in-line adjusted quarterly profit of 68 cents per share, but the medical device maker's revenue fell short of estimates. The company's results were hurt by lower-than-expected international sales of its heart valve devices, among other factors.
Juniper Networks — Juniper reported adjusted quarterly profit of 58 cents per share, six cents a share above estimates. The networking equipment maker's revenue came in slightly above projections. The company also issued a current-quarter outlook that was slightly higher than Street forecasts.
Pandora Media — Pandora lost seven cents per share for its latest quarter, one cent a share wider than anticipated. The music streaming service's revenue also missed forecasts, as did its full-year forecast. Pandora's active users totaled 77.9 million in the quarter, down from 78.1 million in the prior quarter.
Express Scripts — Express Scripts matched estimates with quarterly profit of $1.74 per share, but narrowed its full-year guidance while raising the midpoint of that forecast. The pharmacy benefit manager is projecting profit of $1.84 to $1.90 per share, above consensus forecasts of $1.74 a share.
Akamai — Akamai came in seven cents a share above estimates, with adjusted quarterly profit of 68 cents per share. Revenue also beat forecasts. The web services company gave strong current-quarter guidance on increasing demand for its cloud security products.
Toyota — The automaker is recalling 5.8 million vehicles in Japan, Europe, and China in yet another round of recalls related to faulty Takata airbag inflators, including some that had been used as replacements in a prior recall six years ago.
Vodafone — Vodafone was fined $5.6 million by British regulators for "serious and sustained" customer failures. Regulators say the mobile operator did not act quickly to deal with those issues, largely related to billing procedures.
Las Vegas Sands, Wynn Resorts — These and other companies operating in Macau may benefit today from news that Macau casino operator Galaxy Entertainment saw profit rise 28 percent in the third quarter. It's the latest sign that the long slump for Macau casino operations may have finally bottomed out.
Wal-Mart Stores — Wal-Mart may reverse its decision to invest in Flipkart, India's largest online retailer. The Economic Times reports that Wal-mart is having second thoughts about its potential $1 billion investment on suspicions that Flipkart may have been inflating its numbers. The report comes in the wake of Flipkart Chief Financial Officer Sanjay Baweja's resignation this week.
Alphabet — Google Fiber division is looking for a new leader following the resignation of chief Craig Barratt. Barratt will remain an advisor to the company.