Yelp (YELP) Stock Coverage Initiated at William Blair

NEW YORK (TheStreet) -- Yelp  stock coverage was initiated by analysts at William Blair with a "market perform" rating. Shares are jumping 2.37% to $25.05 on Tuesday morning. Right now, the company is generating revenue from its self-service advertising product, which is priced on a cost-per-click basis, and from its subscription product. After doing some analysis, the firm found out that the self-service advertising product is much more beneficial to advertisers in terms of return on investmen...