“If there were to be any negative impact on European travel, Priceline would be the most exposed and, not surprisingly it’s the one that’s down the most in the market right now,” Olson noted. Bottom line: If you’re looking to buy some.

Expedia (EXPE) is acquiring rival Orbitz Worldwide (OWW) for $12 a share or $1.6 billion based on its volume-weighted average share price over the five days ending Feb 11. Orbitz shares jumped 21.8% yesterday, while Expedia’s were up.