NEW YORK — More swings in the bond market are rattling stock markets around the world on Thursday and offsetting optimism that the artificial-intelligence industry can keep climbing.

The S&P 500 slipped 0.1% after swinging between earlier gains and losses and may be heading toward its seventh drop in the last eight days. The Dow Jones Industrial Average was down 188 points, or 0.4% as of 10:45 a.m. Eastern time, and the Nasdaq composite was virtually unchanged.

The losses were sharper in Europe, where bond yields saw a significant jump overnight. Stock indexes tumbled 1.7% in London and 1.6% in Paris after the yield on the 10-year U.K. government bond swung as high as 5.53% before falling to 5.37% and then charging upward again.

High…