GSI Media is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Open AdExchange has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, Internet & Telecom and 27 other categories.
GSI Media is leading in Shopping, Computer & Electronics, Clothing, Children and 4 other categories.
Open AdExchange is leading in most countries, including Denmark, Germany, United Kingdom, Sweden and 2 other countries.
GSI Media is leading in United States, Brazil and Canada.