Archived explainer. For the current picture see today's TER page.
TERADYNE INC (TER) is down -13.30% in the latest session. Our newswire has captured 3 stories on TER across 3 sources in the last 36 hours, with AI sentiment reading mixed (avg 43/100).
Teradyne Inc (TER) fell 13.30% to $329.20 in a sharp reversal after a four-session rally. The decline comes amid broader market pressure on high-growth tech stocks and a selloff in the Nasdaq 100. The stock’s steep drop also coincided with a report of insider sales and unusual options activity, suggesting a shift in investor sentiment.
The stock’s decline accelerated after the four-session upward trend ended, with the price falling below key support levels. The Fly reported a 9.8% drop earlier in the session, while Seeking Alpha highlighted the 13% slide as a significant pullback. The move occurred despite Teradyne’s recent expansion into India, where it opened an office in Bengaluru to support its growing semiconductor ecosystem. The company will participate in SEMICON India later this month, but the news failed to offset the downward momentum. Meanwhile, unusual options activity showed a put premium of $1.3 million, the largest single print in the last 36 hours, indicating bearish positioning.
Teradyne’s fundamentals remain strong, with a trailing twelve-month revenue increase of 57.9% and a net margin of 25.8%. However, the stock’s beta of 1.78 suggests it is highly sensitive to market swings. The recent insider sales, totaling $4.3 million in the last 90 days, added to the bearish tone. The stock is currently trading within its 52-week range of $109.56 to $487.91, having printed one fresh 52-week high and 38 fresh 52-week lows on September 14. Volume has exceeded the 20-day average, amplifying the sell-off.
Teradyne is not scheduled to report earnings in the near term. Investors should monitor the breadth of coverage and whether the stock stabilizes above key support levels.
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.
The Bengaluru hub will provide customer engagement, applications support, training and partnerships. Teradyne will attend SEMICON India Sept. 17-19.
Teradyne (TER) plunges 13%: key levels, RSI, volume, and analyst takes amid robotics/AI test demand.
More on TER: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.
Earlier TER move explainers: 2026-09-15 · 2026-09-14 · 2026-09-01 · 2026-08-21 · 2026-08-18 · 2026-08-17