Stock market today: World shares are mixed, Chinese indexes sink, after Wall St snaps losing streak

World shares are mixed and Chinese shares saw their worst day in six months as investors showed scant enthusiasm for Beijing's latest policy moves. U.S. futures were little changed and oil prices rose. On Monday, the S&P 500 rose 1.1%, breaking a three-day losing streak. It was the first gain for the index since setting an all-time high early last week. The Dow Jones Industrial Average added 0.3%, and the Nasdaq composite gained 1.6%. Big Tech stocks regained some of their sharp drops from last week. Treasury yields mostly rose in the bond market after President Joe Biden said he won’t run for re-election.