via How The Travel Booking Giants Stack Up & Where Are They Heading – Skift.
Expedia is loosing market share rapidly to booking.com and princely mostly. The dark horse in the race to the top is TripAdvisor for now, but they seem to moving into more OTA territory and that bad news for them and suppliers. Is an over crowded market now and getting more and more unpopular with suppliers who are squeezing margins.
Read more on the article and see the table as to how the all rank.