Index inclusion creates immediate buying pressure as passive funds purchase shares to match the S&P 500 composition.

Opendoor Technologies rose 25% in premarket trading after a social media post by Carvana spotter Eric Jackson. Tesla rose ...

Block (XYZ) stock surged as much as 8.9% in Monday morning trading after S&P Dow Jones Indices said it will add the Cash App ...

Block jumped after being tapped to join the S&P 500, a move that sets the stage for index investors to buy the stock.

Block shares surged Monday as the digital payments provider prepares to join the S&P 500 Index starting Wednesday.

Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies ...

Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies ...

Block (NYSE: XYZ) has surged by over 7% this morning after the S&P Dow Jones Indices announced that this company is joining ...

Block shares surged in extended trading Friday, after S&P Dow Jones Indices said the digital payments provider will be ...

Block's membership in the index comes as it transitions into an all-in-one finance platform that offers debit cards and loans ...

Block stock extends gains on news it will replace Hess in the S&P 500 index on July 23. Baird says XYZ shares are not out of ...

Jack Dorsey's Block just hit the S&P 500 and his payments company, Square, is rolling out Bitcoin payment services.