Expedia (EXPE +3.3%) is moving higher, and TripAdvisor (TRIP -5.5%) is selling off, on the...

Expedia (EXPE +3.3%) is moving higher, and TripAdvisor (TRIP -5.5%) is selling off, on the companies' first day of trading as separate entities. Macquarie's Tom White is concerned about the fact Expedia currently accounts for 35% of TripAdvisor's revenue, and suggests a drop in Expedia's ad buying could create a revenue "headwind" of 2%-5%. (previously)