Shares of Taboola (NASDAQ: TBLA) soared 56% this past week, according to data from S&P Global Market Intelligence, after the advertising company struck a blockbuster deal with Yahoo!. Under the terms of the agreement, Taboola will serve as Yahoo!'s exclusive digital advertising partner across its websites. Taboola will run the native ads on Yahoo!'s properties spanning news, sports, finance, and more that collectively reach nearly 900 million monthly active users.