FANG acronym is a new one, it shows the stocks that grew up in 2015, but will most likely bounce back in 2016. Analysts include such stock as Facebook, Netflix, Amazon and Google. I disagree about some of them such Amazon, but Amazon is going down. I don't want to do anything against the market in order to save my money. Another interesting stock that was growing throughout the year was Expedia. Almost 43% up in 2015 is quite an impressive result. Moreover, the volatility is really low, the stock showed a solid uptrend. Expedia is a well-diversified business. The company's brands list include: /Expedia.com, Hotels.com, Hotwire.com, Classic Vacations, Travelocity, Expedia Local Expert, Egencia, Expedia CruiseShipCenters, eLong, and Venere.com, as well as trivago, CarRentals.com, Wotif.com, lastminute.com.au, travel.com.au, Asia Web Direct, LateStays.com, GoDo.com.au, and Arnold Travel Technology/. Sounds interesting, but the business is diversified within one industry. CB insights made a bit research on Aribnb, one of the most fast-growing companies in a sector. But I would like yo pay your attention to Expedia's positions in all their graphs and data. There are no doubts that Aribnb will be an absolute leader in this segment because of the low base. As you can see, Expedia is on the third place, HomeAway on the second. Expedia acquired HomeAway in 2015 for $4.3B. So as we can see from this chart, Expedia's growth rate is still high for the company which is 10 years more in the market than Airbnb. I don't know, why CBinsights ignored Priceline, but the company had around 24% in revenue growth in FY2014. However, Expedia has a higher LTM revenue growth 13% vs 11% Priceline has. On its website, Expedia has all the presentations for its investors, what I can't say about Priceline. So according to Expedia's management, the company holds 43% of online travel market. By the way: they should fire their designer, presentations look like 14 years old teenager worked on it. According to the MarketRealist, Expedia is way ahead of Priceline in terms of hotel bookings: 52% against 31% Priceline has. It surprised me a lot, because according to similarweb, booking.com has around 195M page views per month while hotels.com has around 20M page views. I assume that Expedia has a huge market share in Asia, but due to my customer experience - booking.com covered the whole western Europe. Perhaps, it isn't the cheapest one, but the number of hotels listed there is amazing. However, according to Expedia's deck Trivago (Expedia's company) has more than 900K hotels listed, while booking.com has around 846K hotels listed. In this case of such tough competition, M&A deals can impact the business significantly. Priceline closed around 6 deals, excluding buyback and including two private placements of CTrip. Total volume of these deals was around $1.31B. Expedia has the same number of deals on a buy-side last year, but the volume of its deals was way higher - $6.78B. As I've already mentioned, the company acquired HomeAway in November, plus they acquired Orbitz for $1.88B and some other companies. Moreover, Expedia made an exit - they sold their E-Long shares for $682M (62.4%). All these acquisitions were made to empower its positions on a global market. Expedia's positions are stronger, because most of revenue the company gets in the United States and Canada (more than 50%) compared to 18% Priceline has. Moreover, Priceline's revenue highly depends on euro fluctuations, that's why the company's growth rate in local currencies was higher. Priceline at the moment is developing its Kayak division, which is growing really fast. Kayak is a metasearch website. Metasearch means that Kayak aggregates the results from another search engines and make it possible to choose the cheapest available options. It seems that Expedia use metasearch on its website, but I don't think that it is as good as Kayak. If Expedia's business is comparable to Priceline, the financials are not comparable at all. Priceline's margins are way too high. There are a few findings from Expedia's financials:LTM EBIT margin went down 3% from 10.3% in FY2014 to 7.4%;Net income margin doubled: LTM Net income margin is 13.3% compared to 6.9% in FY2014. This increase was due to the selling of E-Long shares;Cash flow from operations is more or less stable around $1.3B last year and last twelve months;Expedia has around $1.5B in cash, this line is more or less comparable to Priceline's $1.8B, while Priceline's market cap is more than 3 times higher - $59.6B against $17.9B. HomeAway acquisition in terms of financials will add a little value actually. The company had around 7.1% EBIT margin last year, so I assume that after the acquisition they will probably increase the operating margins due to cutting down some operating expenses. To summarize,The market is divided between Priceline and Expedia, Airbnb is developing rapidly, others are too local and could probably compete at some point of time. So there are no reasons to think that Expedia's market share will grow in close future. The company will most likely increase their revenue organically due to their acquisitions;Margins are going down and I am not sure that the company is able to stop this decrease;Airbnb is a real threat;Priceline's Kayak (metasearch engine) has to be the leader in metasearch and I think Expedia lost the competition in this market. In my opinion, Expedia is a FANG stock, but I am not sure that the company's stock will pullback this year. I think the price will be at the same level throughout the whole year. And if they don't do anything to improve their technologies, they will most likely start losing their market share.