Teradyne is trading at $368.59, up +4.38%, primarily as semiconductor shares rally on renewed AI optimism and chip-demand expectations.
- No clear company-specific announcement was identified for September 18; available coverage points to broader semiconductor flows and continuation of the prior session’s momentum.
- The move follows gains of 3.51% on September 17 and 2.49% on September 16, reversing part of the September 14 selloff.