Google’s Real Estate Listings ‘Experiment’ Sends Zillow Shares Down More Than 8%

Google’s data partner HouseCanary has begun displaying home listings directly in search results in select markets, sending Zillow’s shares tumbling more than 8% yesterday as investors weighed whether the search giant might eventually cut into the portal business that Zillow dominates.

The experiment places property details, prices, images and a “Request a tour” button at the top of mobile search results. HouseCanary, a full-service brokerage licensed in all 50 states and…