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, News & Media, Autos & Vehicles, Car Buying and 94 other categories.
Yieldr is leading in Travel, Accommodation & Hotels, Airlines & Airports and Office Products.
SpotX is leading in most countries, including United States, Germany, Netherlands, United Kingdom and 47 other countries.
Yieldr is leading in Greece.