• Sep 15, 2026

  $332.85+1.11%

• Sep 14, 2026

  $329.20-13.30%

  Shares fell 13.30% on the day, a move not shared by the broad market, which was roughly flat at -0.45% [1]. Trading volume was elevated at 2.1x the trailing average, with the session ranging between 328.59 and 349.46 [2].

  • 1Broad market
  • 2Market data

• Sep 11, 2026

  $379.72+2.57%

  The stock rose 2.57% on the day, outpacing a 0.85% gain in the S&P 500 ETF, indicating the move was not simply a reflection of the broader market [1].

  • 1Broad market

• Sep 10, 2026

  $370.19-3.52%

  Shares fell 3.52% on the day, a decline not shared by the broad market, which moved only -0.60% [1].

  • 1Broad market

• Sep 9, 2026

  $383.69+3.13%

  Teradyne shares rose 3.13% on a day when the S&P 500 ETF moved -0.46%, meaning the gain was not shared by the broad market [1].

  • 1Broad market

• Sep 8, 2026

  $372.06+4.21%

  Teradyne shares rose 4.21% on a day the broader market, as measured by the S&P 500 ETF, fell 0.55%, indicating the move was not shared by the broad market [1].

  • 1Broad market

• Sep 4, 2026

  $357.03+5.45%

  Shares rose 5.45% while the broad market, as measured by the S&P 500 ETF (SPY), was little changed, down 0.39% [1]. The gain was therefore not shared by the broader market that day [1].

  • 1Broad market

Closing prices for TER. Summaries describe past sessions only and are not advice, a forecast or a recommendation.

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