Teradyne reported some of the strongest sequential growth in AI with revenue up 41%QoQ in Q4 on strong AI-driven compute and memory test demand. With that said, this may turn out to be its peak sequential growth quarter with the company guiding for growth to be 1H weighted, implying a sharp deceleration into Q2 and Q3.
Also prevalent in Q4’s call was a winding discussion on the automated testing equipment TAM, with management outlining a new target model that would see revenue nearly doubling from FY25’s $3.2 billion to $6 billion. Current consensus estimates now see this growth happening in just three years despite the expected softness in 2H, with a handful of concerns raised over the uncertainty baked into TAM growth estimates.
Brief Overview of What Teradyne Does
Teradyne primarily provides automated test equipment (ATE) for stress testing high-performance AI processors, DRAM and HBM chips, SSDs and networking devices, measuring performance and reliability and identifying defects prior to shipment.
For example, Teradyne’s UltraFLEXplus test system was architected specifically for high-performance AI processors and networking devices, enabling high-efficiency volume production and reducing time to market by up to 20% by maximizing defect detection, shortening validation cycles and improving yields. Its Magnum 7H is a multi-generational HBM test platform, serving HBM3e and HBM4 needs with upgradability to service HBM4e and HBM5 when these products arrive; it offers base-die wafer testing, memory core validation and speed validation, providing quality assurance across the full HBM manufacturing process.
Over the longer term, the increasing complexity of chips – from increasing transistor counts to hundreds of billions, packing more memory per chip, shift to chiplet or multi-chip module, to increasing die sizes — all increase test intensity as the number of potential defect points increases exponentially. For example, the cost of scrapping racks escalates from the NVL72 to the upcoming NVL144 and NVL576 platforms due to the increase in complexity and size, creating long-term tailwinds for Teradyne’s high-performance SoC and memory test products; this does not account for the rapid development timelines and ramp cycles that Nvidia and other competitors are now pursuing, which will emphasize high-quality yields at scale and defect elimination to prevent delays.
2026 Revenue to be 1H Weighted, Risks to 2H Growth
While the majority of Teradyne’s Q4 call focused on a rather extensive discussion of its addressable market growth and how this plays into its updated long-term framework, there was an important note on 2026’s revenue trajectory. Teradyne expects revenue this year to be the opposite of 2025, with around 60% of revenue to be weighted in the first half with 40% in the second half:
“Many of you who have been following us for a while, know historically we’ve experienced what we call ‘lumpy’ Q2 or Q3 revenue trends tied to mobile demand and product life cycles.
As our compute and memory portfolios continue to grow, our revenue will continue to be lumpy yet follow a less predictable pattern. While 2025 sales were 40% in the first half and 60% in the second half, based on what we know today, we expect 2026 sales to be the inverse."
This is the main risk present to Teradyne’s story, as it implies QoQ growth will decelerate into Q2 and turn negative in the back half. For example, FY26 revenue is currently projected to be ~$4.18 billion, implying 1H revenue of ~$2.51 billion and 2H revenue of $1.67 billion.
As a result, consensus estimates already point to QoQ growth reversing by Q2 at (3.3%) to $1.17 billion and then decelerating to (22.2%) QoQ to $910 million by Q3. This is similar in YoY growth, which would peak at 80% in Q2 and decelerate sharply to 18.3% by Q3.
Considering the inverse nature of the revenue mix in 2026 versus 2025, analysts questioned overall revenue growth to better plot the year. Management hinted at having a high degree of confidence in the first part of the year with less visibility in the second half, though they did note that growth still has a chance of being stronger than expected in 2H.
Q, Christopher Muse, Cantor Fitzgerald:
“Curious how to think about perhaps the overall revenue growth rate or thinking about June so we can size it. Will you grow above the high end of kind of the revenue target range of 25%? Or any help would be great.”
A, VP and CFO Michelle Turner:
“We talk about having like 13 weeks of demand kind of insights from a forecast perspective. I would say we have better insights this year to first half. And so that's a positive from an overall 2026 perspective. I do want to balance this, however, with kind of what I talked about in my opening remarks and really emphasize the lumpiness of this new sales pattern.
So I want to caution us against kind of a linearity trend assumptions with the recognition that we could see things move between quarters and between years as we recognize some of these ordering patterns in this kind of new AI infrastructure build-out environment.
A, President and CEO Gregory Smith:
“The run rate that we have in Q1 is like we have a fair amount of strength in Q1. We don't have great visibility into the second half. So we're a little bit cautious that we don't want people to sort of take that and run with it for the full year. We expect that we're in kind of a 2, 3-quarter surge that may lead to a shorter period of digestion afterwards.”
Management clarified further that this revenue weighting is partially due to its involvement in major programs that are more concentrated in 1H, though there are more “irons in the fire that could result in second half growth” that management simply does not have enough confidence in forecasting yet.
This does open the door for upside revisions come Q2-Q3, though the lack of confidence does not make this story immediately investable. In order to see QoQ growth remain positive based on current consensus estimates, Teradyne would need to see Q3 revenue revised higher by $250 million, or more than 27%, up from its current expectations of $910 million.
This may be doable but not necessarily worth the risk considering more directly-exposed AI hardware names are seeing stronger QoQ growth with less downside risk to forecasts. Some factors that could drive this stronger 2H include TSMC’s above-expected capex plans for the year as well as SK Hynix and Samsung forecasting strong capex in 2026 – Samsung said memory capex will increase ‘considerably’ while SK Hynix will maintain capex around the mid-30% of revenue range. In SK Hynix’s case, this could imply capex in the mid $30 billion range, up from ~$20 billion in 2025.
Revenue Lumpiness from GPU, ASICs Programs
While Teradyne’s testing positioning is still linked to wafer starts and broader WFE capex cycles, such as for memory, revenue is also tied closely to design wins from new GPU or ASICs programs. This can lead to a higher degree of revenue lumpiness, as management had cautioned in Q3 that “it would probably be a mistake to like look at the growth from Q3 to Q4 and draw a line straight up from there because there we're at a relatively high level, and we expect continued strength, but it is really lumpy and the timing continues to be uncertain, even between Q1 and Q2 of next year.”
For ASICs, management explained that they are currently cautious in sizing the ASICs TAM for programs that are not in volume as hyperscalers “will only take their ASICs to full volume if they see an advantage in like tokens per watt or what other metric they are trying to focus on,” and it may be a “really noisy number, especially at the quarter-by-quarter level, but even yearly” depending on how project ramps pan out. The uncertainty about when programs will move from testing to volume production lands entirely outside of Teradyne’s control, thus creating lumpy or limited revenue opportunities in the near-term until hyperscalers commit fully to these programs.
For merchant GPUs, Teradyne clarified that Q1’s guide does not include any revenue from this category, with it being more of a material factor in the second half of 2026. However, there are a few conditional factors within this that remain front of mind – the revenue mix towards a softer 2H implies minimal impact on growth from this with management saying share would be single-digit to start, along with comments that this growth would occur ‘once’ it achieves qualification, meaning a revenue ramp timeline is not set in stone and qualification may not be 100% guaranteed.
Considering the rapid development and ramp cycles for both merchant GPUs and ASICs over the next few years — Nvidia and AMD both having next-gen platforms set for launch in 2026 and 2027, and Amazon, Meta and Google expected to have ASICs programs in both years – potential lumpiness could open the door for buying opportunities.
Discussions on TAM, New Long-Term Framework
Teradyne’s Q4 call was spent discussing management’s updated long-term target model. The company projects ATE TAM to rise from $9 billion in 2025 to $12-14 billion, driving revenue at a 15-25% CAGR from $3.2 billion to $6 billion, implying this topline growth could take between three to five years.
This would roughly project the ATE TAM to rise at a 9-11% CAGR to reach the $12-14 billion over the same time frame. Management acknowledged that the “most important uncertainty is the speed at which the market grows” and how long it takes to reach this new TAM – for context, Teradyne’s initial 2025 TAM growth estimate was to $6.3 billion at midpoint, yet the end figure was roughly 50% growth to $9 billion.
System on chip (SoC) was stated as the main TAM driver in 2025, up 60% YoY to a record ~$7.2 billion, with $5 billion from compute; memory was said to be approximately $1.4 billion, including $1.2 billion from DRAM/HBM.
Here is what was stated on the call about these leading segments looking ahead to 2026:
- Within SoC, management predicts compute will “grow significantly from a very high base driven by AI,” with single-digit share gains from ramping VIP compute programs, silicon photonics and potential share in merchant GPU. Management expects “robust” TAM growth in 2026 on top of 60% growth in 2026.
- For memory, Teradyne expects the market to be “resurgent” in 2026 with low-double digit TAM growth following a (4%) market decline in 2025, with strength in HBM and DRAM; management expects incremental share gains in the latter two.
Based on management’s expectations for Semi Test to account for 80% revenue mix and 2026 consensus for $4.18 billion, this would project Semi Test revenue to accelerate to 33% YoY to $3.36 billion, around 3X the estimated ATE TAM growth.
To reach the $6 billion target in three years, Semi Test revenue would need to maintain ~20% annual growth in 2027 and 2028 to reach the $4.8 billion needed at 80% revenue mix, growing roughly 2X the estimated TAM; however, reaching the target in five years would mean growth comes in at around 9%, in line with the market.
However, as of now, it appears analysts were one step ahead of Teradyne on raising this forecast as this new TAM largely reflects analyst consensus — current estimates are tracking the fast-tracked 20% growth scenario in 2027 and 2028, with estimates moving $1.3 billion higher to nearly $6 billion in FY28. As such, the current $6 billion revenue model looks to be largely priced in.
Financials
Revenue Accelerating Sharply, but Could Soon Peak
Teradyne reported Q$ revenue of $1.083 billion, up 44.3% YoY and 40.8% QoQ, accelerating sharply from 4.3% YoY and 18.1% QoQ growth in Q3 and marking the company’s second largest quarter in history.
For Q1, Teradyne guided for a record $1.15 billion to $1.25 billion in revenue, accelerating to 75% YoY whereas QoQ growth will decelerate to 10.8% QoQ at midpoint (though it should be noted that accelerating off 41% QoQ growth is extremely difficult). Management said they have continued to see demand strengthen since October, driven by AI. As discussed above, QoQ and YoY growth may begin to decelerate sharply heading into Q2 and 2H, given the discussion on growth to be 1H weighted.
For fiscal 2025, Teradyne delivered revenue growth of just 13.1% YoY to $3.19 billion due to the mid-year softness, while current consensus points to a strong 18 point acceleration to 31% YoY growth to $4.18 billion in 2026.
Key Segments: Semi Test Revenue Sees Sharp QoQ Growth
All of Teradyne’s reportable segments recorded double-digit QoQ growth in Q4, though Teradyne’s Semi Test revenue was a bright spot, accelerating from 23% QoQ in Q3 to 45.7% QoQ this quarter on strong AI compute and memory demand. YoY growth accelerated 50 points from 7% to 57.4% in the quarter. Within Semi Test, Teradyne said system-on-chip (SoC) revenue was up 47% QoQ to $647 million in Q4, while memory revenue reached a record at $206 million, up 61% QoQ.
FY25 Semi Test revenue increased nearly 19% YoY to $2.52 billion, primarily driven by SoC, with revenue up 23% YoY to $1.89 billion with compute revenue up 90% YoY to $753 million; memory revenue showed only marginal growth to $504 million. Management shared little details for 2026’s outlook, other than noting that they received orders from an HDD customer in late 2025, and expect HDD revenue to approximately double between 2025 and 2026.
For Teradyne’s other segments, Product test revenue increased 25% QoQ and 17% YoY to $110 million in Q4, driven by strong aerospace and defense demand. FY25 Product revenue was up just over 8% YoY to $358 million.
Robotics revenue increased nearly 19% QoQ but was down more than (9%) YoY to $89 million, and for the full year, Robotics decreased nearly (16%) YoY to $308 million.
AI-Driven Revenue More than Doubling from Q3 to Q1
Looking more broadly at AI’s impact, Teradyne is witnessing a rapid AI-driven revenue ramp. Management updated in Q4 that AI drove more than 60% of revenue, forecasting this contribution to increase to north of 70% in Q1:
“When you roll it up, AI demand drove 40 to 50% of our revenue in Q3. In Q4, AI drove more than 60% of our revenue. Looking forward to Q1 of 2026, we expect that upwards of 70% of our revenue will be driven by AI applications.”
Plotting out this ramp implies AI-driven revenue starting at $308-$385 million in Q3, rising to more than $650 million by Q4, or up 69-111% QoQ. AI-driven revenue would project out to at least $840 million in Q1 at the midpoint of revenue guidance for $1.15-$1.25 billion, or up another >29% QoQ. While a majority of this growth has been driven by device testing, Teradyne says it does have growth outlets outside of that, including in production board testing for server trays as well as in silicon photonics.
Operating Margins Expand Despite Gross Margin Pinch
Teradyne reported strong operating margin expansion in Q4 despite gross margins contracting; however, GAAP margins for the full year contracted slightly.
In Q4, GAAP and adjusted gross margin was 57.2%, contracting 1.2/1.3 points QoQ and 2.2 points YoY. Management said that this was driven by AI demand in Semi Test, offset by lower Product test margins, robotics mix and inventory write-downs on legacy products. For Q1, Teradyne guided adjusted gross margin to be 58.5%-59.5%, up another 1.8 points QoQ at midpoint, though this would be down 1.6 points YoY.
GAAP operating margin was 27.1%, expanding 8.2 points QoQ and 6.7 points YoY, while adjusted operating margin was 29%, up 8.6 points QoQ and 6.7 points YoY. For Q1, adjusted operating margin was guided to be 30.5%-33.5%, up 3 points QoQ and 11.5 points YoY, signaling strong operating leverage considering the guided YoY decline in gross margin; this would be the highest adjusted operating margin since late 2021.
Net margins saw similar expansion, with GAAP net margin expanding 8.2 points QoQ and 4.3 points YoY to 23.7%, while adjusted net margin was up 8.4 points QoQ and 5.5 points YoY.
For 2025, Teradyne reported GAAP gross margin of 58.2% and adjusted gross margin of 58.3%, down 0.3 points YoY. This is slightly below the target forecast for 59% to 61%.
FY25 GAAP operating margin was 20.4% for the year, down 0.7 points, though adjusted operating margin was 22.3%, up 1.9 points YoY. Teradyne’s target long-term framework calls for adjusted operating margin to be 30-34%, signaling nearly ten points of expansion at the midpoint.
FY25 GAAP net margin was 17.4% for the year, down 1.8 points YoY, while adjusted net margin rose 1.2 points YoY to 19.8%.
A quick comparison to other leading WFE players such as Lam Research or Applied Materials shows Teradyne posting lower operating margins, despite its gross margins being ten points higher. Lam reported a 49.6% GAAP gross margin this past quarter with an operating margin of 33.9%, more than 13 points above Teradyne’s; Applied Materials posted a 49% gross margin and a 26.1% operating margin, also more than five points above Teradyne despite the thinner gross margin profile.
EPS
Teradyne reported robust earnings growth in Q4 that is expected to accelerate into the first half of 2026, aligning with the revenue concentration in 1H.
GAAP EPS was $1.63 in Q4, up 81.1% YoY and beating the $1.33 estimate by more than 22.5%. Adjusted EPS beat estimates by more than 30%, increasing 89.5% YoY to $1.80.
For Q1, Teradyne guided for GAAP EPS to be $1.82 to $2.19, up 228.7% YoY at the midpoint, accelerating more than 137 points. Adjusted EPS was guided to be up 176% YoY at midpoint to $1.89 to $2.25, an 87 point acceleration; this also represented a 65.6% beat to the $1.25 estimate. Similar to revenue, EPS growth is heavily weighted and the strongest in 1H before decelerating sharply into 2H.
FY25 GAAP EPS was $3.47, up 4.5% YoY and adjusted EPS was $3.96, up 23% YoY. Teradyne did not provide a guide for 2026, though current estimates point to 57.5% growth to $6.24 in adjusted EPS.
Revisions for EPS are strongly positive, with FY26 estimates moving nearly $1 higher following earnings, and FY28 up nearly $3 to $10.49 – this estimate now aligns with the company’s model under where adjusted EPS is projected to be $9.50 to $11.
Cash Flows and Balance Sheet
Cash flow margins were mixed, showing a sharp YoY contraction but a sharper sequential rebound.
Operating cash flow was $281.6 million in Q4 for a 26% margin, down 11.5 points YoY but rebounding 19.6 points QoQ. For 2025, operating cash flow was $674.4 million for a 21.1% margin, down from a 23.8% margin in 2024.
Free cash flow was $219 million in Q4 for a 20.2% margin, down 9.7 points YoY but also rebounding 19.9 points QoQ. For the year, free cash flow was $450.4 million, marking a 14.1% margin, down from a 16.8% margin in 2024.
Teradyne’s cash balance is rather thin with cash and equivalents of $448 million, while short debt totaled $200 million.
Valuation
The challenge with Teradyne is that it is heading into peak growth quarters at peak valuation metrics on the topline. Teradyne is valued at 11.6x forward PS, well above its five-year average of 6.6x and also more than 23% above its prior peaks from 2024 around 9.4x.
On the bottom line, the valuation is still stretched but with some room to breathe given the positive EPS revisions after earnings. Teradyne is currently trading at 49.7x forward PE, below its peaks from December at 57-58x.
Conclusion
While Teradyne reported one of the strongest QoQ growth prints in AI this quarter with revenue up 41% QoQ, this is expected to decelerate rather sharply into Q1 with guidance pointing to growth of 10.8% QoQ. This is because Teradyne does experience revenue lumpiness due to program timing — such as what management outlined with the difficulties in forecasting ASICs opportunities quarter by quarter — meaning that while equipment providers can offer strong growth and returns, timing can be very difficult as it often lies on factors outside of the company’s control.
Damien Robbins, Equity Analyst at I/O Fund contributed to this analysis.
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