In total, Expedia spent $6 billion acquiring companies in 2015, Benchmark analyst Daniel Kurnos wrote in a research report. Trivago - which Expedia acquired a majority share in, in 2012 - was a highlight. Trivago revenue jumped 48% to $176 million and accounted for the second-largest chunk of revenue behind the $1.54 billion, up 32%, achieved in Expedia’s core online travel agency segment. Egencia and HomeAway brought in $110 million and $142 million. “Trivago again achieved profitability, as aggressive spending drove 48% revenue growth while still achieving 25% contribution margins in Europe and 10% contribution margins across all geographies outside of Europe,” Kurnos wrote. Get the full story at Read also "Expedia quarterly loss to increase significantly"