Priceline, Expedia, and Orbitz all reported earnings in February, and each had different areas of strength that led to large gains. The industry's most valuable company, Priceline, continued its remarkable run of above-industry growth. Specifically, its revenue increased 29.4% year over year to $1.5 billion, which was easily better than analysts' expectations. Furthermore, the company's gross bookings -- a closely watched metric of user engagement -- rose 38.8% in the quarter, showing an acceleration of bookings growth, with 85% of total bookings coming from international markets. Expedia's revenue growth of 18% didn't match Priceline's performance but was impressive nonetheless. In addition, its gross bookings rose 21% after growing just 15% in the prior quarter. This bookings growth was fueled by a 25% boost in hotel room nights purchased, which is a staple of Expedia's business. Orbitz's numbers weren't nearly as impressive as either Priceline or Expedia, as its revenue grew just 4.2% and gross bookings displayed 4% growth. Clearly, these numbers aren't great, but what led to a near 30% stock jump is that expectations were very low following a poor third quarter. Also, 17.5% of its float was short, further showing the number of people betting against Orbitz, which then backfired when the quarter was better than investors feared. Get the full story at The Motley Fool