SpotX is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
SpotX has better usage coverage in more websites categories. Including Arts & Entertainment, Autos & Vehicles, News & Media, Car Buying and 86 other categories.
Tremor Media is leading in Video Games, Adult, Nutrition, Law & Government and 8 other categories.
SpotX is leading in most countries, including United States, Germany, Netherlands, Spain and 45 other countries.
Tremor Media is leading in Japan, Australia, Bulgaria, China and 2 other countries.