Teradyne Inc is trading 8.1% up at $436.01 following a sharp multi-day rally driven by its upcoming addition to the Nasdaq-100 Index and a sizable U.S. Department of Defense test-equipment contract.

  • The inclusion in the Nasdaq-100 and the new DoD contract have significantly bolstered investor sentiment and market demand.
  • The price action aligns with a broad risk-on rally in the technology and AI sectors, which has amplified interest in semiconductor and test-equipment stocks.