Google had a good year in 2013. As of mid-December, its stock was up about 55% for the year. Apple meanwhile was up a mere 4%.
Google is expected to take in more than half of all mobile ad revenue this year, and its share of the market appears likely to continue growing as it becomes better at monetizing YouTube on mobile devices.
Android consolidated its position as the leading smartphone platform, by volume if not quality. According to IDC, Android handsets accounted for 81% of all smartphone shipments worldwide during the third quarter of the year.