Check out the companies making headlines after the bell Thursday:
Amazon's stock surged 18 percent after it reported a surprise profit of 19 cents a share, sailing past forecasts for a loss of 14 cents share. Revenue came in at $23.18 billion, beating projections of $22.39 billion, helped by a 81 percent increase sales from its Amazon Web Services sector, which includes cloud computing.
Pandora shares climbed 11 percent after the Internet radio provider beat on the top and bottom lines as revenue rose 30 percent from a year ago.
Credit card provider Visa beat on the top and bottom lines, sending its stock up about 7 percent in extended trading. Visa also said it was in talks to acquire its former subsidiary Visa Europe, saying there was "compelling logic" for a tie up.
Seattle, Washington-based coffee giant Starbucks reported adjusted earnings of 42 cents a share, beating estimates by a penny, while sales came in at $4.88 billion, slightly topping projections. Starbucks also added 50 million shares to its existing buyback program and announced a new distribution agreement with Pepsi. Starbucks shares jumped 5 percent after the bell.
Telecom behemoth AT&T reported earnings per share of 69 cents, beating estimates of 63 cents a share, but revenue came in slightly below forecasts. The company said wireless net additions for the quarter totaled 2.1 million, topping estimates of 1.32 million. Shares rose about 2 percent after hours.
Shares of TripAdvisor tumbled about 9 percent after the online travel firm missed profit and sales projections.
Skyworks Solutions, which manufactures and develops chip products, saw its stock rise more than 3 percent as earnings and sales figures came in above the average analysts' consensus.
Capital One Financial shares fell 4 percent after the financial service provider missed expectations with profit of $1.78 a share on $5.67 billion in revenue, which was flat with the year-earlier period.
Electrical networks maker Juniper Networks reported better-than-expected second-quarter results and provided strong third-quarter earnings and revenue guidance, which sent the stock soaring 10 percent in extended trading.