TOP TIERMARKET NEWSWIRE
Movers explained · September 13, 2026

Why Is TERADYNE INC (TER) Stock Moving Today?

By the Top Tier Newswire AI Desk · September 1, 2026 at 10:06 AM ET · reviewed against 0 wire stories

TERADYNE INC (TER) is drawing unusual attention today.

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TER stock closed down 5.37% at $331.03 on the session, marking a sharp decline driven by a mix of bearish analyst sentiment and a weak intraday performance. The stock opened with a 2.0% gap down from the previous close and continued to fall throughout the morning, reaching a session low of $329.87. This move follows recent downgrades and a lack of strong investor confidence, despite the company launching new instruments for its UltraFLEXplus platform.

What Happened

Teradyne announced the launch of three new instruments for its UltraFLEXplus platform, designed for AI and data center computing devices. While this product development was highlighted in several reports, it did not appear to provide a strong enough catalyst to counter recent bearish signals. In the last 36 hours, four stories were published across three sources, including The Fly and StockTitan, emphasizing the new instruments. However, the broader market reaction was influenced by a downgrade from Baird, which cut the stock to Neutral with a $420 price target. Additionally, Jim Cramer's recent comments on CNBC, while not directly negative, did not provide strong bullish reinforcement. The stock's decline was also supported by a lack of institutional buying and a wave of insider sales, with nine insiders selling a total of $6.5 million in the last 90 days.

What The Data Shows

The stock opened at $342.79 and traded as low as $329.87, with volume at 0.2 million shares, or one-tenth of the 3-month average. This weak volume suggests limited participation in the move. The stock is currently trading within its 52-week range of $109.56 to $487.91, having printed 10 fresh 52-week lows on September 1. The fundamentals remain strong, with a revenue growth of 57.9% TTM and a net margin of 25.8%, but the high beta of 1.79 and a P/E ratio of 48.0 indicate the stock is sensitive to market swings and valued at a premium. The recent insider sales and weak volume signal caution among key stakeholders and traders.

What To Watch

The stock is not scheduled to report earnings in the near term, but investors should monitor coverage breadth and any further analyst actions. A shift in sentiment or a rebound in volume could signal a reversal in the current downward trend.

AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.

TER by the numbers

Mkt cap: $55.5BP/E: 48.052w: $109.56 to $487.91
TER · Sep 1 session (5-min) · -4.25% vs prior close · updated 8:58 PM ET
$327$339$351prev close $349.83$334.957:10 AM10:16 AM1:22 PM4:28 PM7:35 PM7:10 AM · $343.507:25 AM · $341.397:35 AM · $344.207:50 AM · $341.687:55 AM · $340.888:00 AM · $340.308:05 AM · $340.008:20 AM · $340.008:30 AM · $340.008:35 AM · $339.608:40 AM · $338.608:50 AM · $338.609:05 AM · $338.689:10 AM · $339.149:20 AM · $340.009:25 AM · $343.619:30 AM · $340.189:35 AM · $335.779:40 AM · $332.949:45 AM · $333.319:50 AM · $332.979:55 AM · $332.3810:00 AM · $330.3710:05 AM · $330.8410:10 AM · $329.6310:15 AM · $329.1810:20 AM · $329.1810:25 AM · $328.2410:30 AM · $331.0510:35 AM · $331.1210:40 AM · $331.4110:45 AM · $331.6310:50 AM · $331.9810:55 AM · $334.0011:00 AM · $335.3211:05 AM · $334.3211:10 AM · $332.9411:15 AM · $332.3611:20 AM · $332.1911:25 AM · $334.1211:30 AM · $333.6011:35 AM · $334.7611:40 AM · $335.8111:45 AM · $336.6511:50 AM · $336.3111:55 AM · $335.1212:00 PM · $334.5912:05 PM · $334.8512:10 PM · $335.0912:15 PM · $333.6112:20 PM · $333.0712:25 PM · $332.0112:30 PM · $330.7612:35 PM · $331.6612:40 PM · $331.8712:45 PM · $332.8612:50 PM · $333.3812:55 PM · $333.751:00 PM · $332.331:05 PM · $331.981:10 PM · $331.791:15 PM · $331.451:20 PM · $331.901:25 PM · $333.001:30 PM · $332.601:35 PM · $332.071:40 PM · $332.271:45 PM · $332.091:50 PM · $332.411:55 PM · $332.362:00 PM · $331.672:05 PM · $332.492:10 PM · $332.192:15 PM · $332.392:20 PM · $332.342:25 PM · $331.542:30 PM · $331.212:35 PM · $331.292:40 PM · $330.072:45 PM · $330.632:50 PM · $331.192:55 PM · $331.603:00 PM · $332.753:05 PM · $333.103:10 PM · $333.673:15 PM · $333.023:20 PM · $333.653:25 PM · $334.763:30 PM · $334.213:35 PM · $333.343:40 PM · $334.773:45 PM · $334.643:50 PM · $334.013:55 PM · $335.544:00 PM · $334.444:05 PM · $336.004:10 PM · $335.464:25 PM · $336.774:40 PM · $335.464:50 PM · $337.005:20 PM · $337.005:40 PM · $335.465:50 PM · $335.466:10 PM · $335.006:20 PM · $334.086:25 PM · $334.006:35 PM · $334.666:50 PM · $334.907:25 PM · $334.017:35 PM · $334.95

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Earlier TER move explainers: 2026-09-01 · 2026-08-21 · 2026-08-18 · 2026-08-17