Yelp stock might merit only a one-star review for 2020. The widespread shutdown of indoor dining has weighed heavily on the online recommendation service. Yelp shares have lost 20% of their value this year, trading at a recent $26.53 and underperforming the Nasdaq Composite index by more than 60 percentage points. Yet changes in its business model, combined with hopes for a reopening of the economy as Covid-19 vaccines arrive, give reason to think that Yelp (ticker: YELP) can reach for the stars. Yelp is trading for a modest two times estimated forward sales, well below TripAdvisor (TRIP) at 3.5 times and Booking Holdings (BKNG) at eight times. And really, the stock is even cheaper: Yelp ended September with almost $600 million in cash. That’s close to 30% of its market cap of just $2 billion. The company has also vowed to buy back stock in the current quarter.