As previously reported, Guggenheim analyst Jake Fuller upgraded Trivago (TRVG) to Buy from Neutral with a price target of $5.50. The analyst notes that the stock has been "forgotten by the Street" and could be in line for a rally similar to TripAdvisor (TRIP) last year after shifting its focus to profitability. Fuller adds that at 80% of revenue, the company's advertising spending has a lot of room for cuts, and that the management's guidance does not contemplate that possibility. The analyst further notes that Trivago stock is trading near all-time lows, there is "potential for material estimate upside."