Image source: eBay. What: Shares of eBay (NASDAQ: EBAY) rose 33.1% in July, according to data provided by S&P Global Market Intelligence. The company's second-quarter results beat analyst estimates across the board, and the company announced a new share buyback program and higher guidance for the full year. So what: eBay reported second-quarter revenue of $2.23 billion, up 6% year over year and about $60 million higher than the average analyst estimate. Gross merchandise volume grew 6% on a constant currency basis to $20.9 billion. eBay had more than 1 billion live listings during the second quarter, the first time the company has surpassed that mark. Non-GAAP EPS came in at $0.43, up from $0.42 during the prior-year period and $0.01 higher than analysts expected. Non-GAAP net income declined 4% year over year, with share buybacks driving the EPS growth. The company had 164 million active buyers during the second quarter, up from 157 million during the prior-year period. eBay spent $500 million on share buybacks during the second quarter, and the company announced a new $2.5 billion authorization. Now what: eBay expects to produce $8.85 billion to $8.95 billion of revenue during 2016, up from a previous range of $8.6 billion to $8.8 billion. Non-GAAP EPS is expected in the range of $1.85 to $1.90. eBay produced a solid quarter, growing revenue at a faster pace than expected. CEO Devin Wenig reiterated the company's strategy: Q2 was another good quarter where we delivered strong results and had acceleration in growth. We are now one year into executing our strategy to provide the best choice, the most relevance and the most powerful selling platform, and there are signs of momentum in our business. We continue to invest in our platforms to ensure eBay is a global commerce leader for years to come. A secret billion-dollar stock opportunity The world's biggest tech company forgot to show you something, but a few Wall Street analysts and the Fool didn't miss a beat: There's a small company that's powering their brand-new gadgets and the coming revolution in technology. And we think its stock price has nearly unlimited room to run for early in-the-know investors! To be one of them, just click here.Timothy Green has no position in any stocks mentioned. The Motley Fool owns shares of and recommends eBay. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.