Market Share by Top Websites

1 GroupM Server is leading in Top 100K Sites and The Entire Web.

2 In terms of market share, Undertone Networks is clearly lagging behind, losing to GroupM Server in all segments.

Websites Categories

1 Undertone Networks has better usage coverage in more websites categories. Including People & Society, News & Media, Sports, Religion & Spirituality and 56 other categories.

2 GroupM Server is leading in Arts & Entertainment, Business & Industry, Internet & Telecom, Shopping and 36 other categories.


1 GroupM Server is leading in most countries, including Poland, Germany, Denmark, Spain and 18 other countries.

2 Undertone Networks is leading in United States, United Kingdom, India, Japan and 17 other countries.