World shares are mixed, while oil prices have pushed higher. The price of Brent crude was hovering above $114 per barrel early Friday. On Thursday, the S&P 500 fell 1.2%, logging its worst day since July, and the Nasdaq composite tumbled 2.6%. The weakness for tech stocks was so overwhelming that it masked strength for the rest of the market, where the majority of U.S. stocks actually rose. The Dow Jones Industrial Average edged up less than 0.1%. AI stocks have been swinging on worries that their boom may be under threat from high interest rates.