(Bloomberg) -- Amazon.com Inc. has put itself in a position to become the S&P 500 Index’s second stock to cross the $1,000 threshold, thanks to a record-setting rally. Shares of the online retailer topped $800 for the first time on Thursday, and the advance narrowed a price gap between Amazon and the voting shares of Alphabet Inc., Google’s owner. Priceline Group Inc. is now the only S&P 500 component with a four-digit price tag on its stock.To contact the reporter on this story: David Wilson in New York at dwilson@bloomberg.net. To contact the editors responsible for this story: Chris Nagi at chrisnagi@bloomberg.net, John Shipman