https://www.reuters.com/article/us-facebook-privacy-shares/facebook-shares-rise-as-zuckerberg-soothes-investors-idUSKCN1HC1R3 >Shares of Facebook Inc headed toward their biggest daily rise in a month at opening on Thursday, after Chief Executive Mark Zuckerberg said the social network had not seen any meaningful impact on usage or ad sales in the wake of the data privacy scandal.