TER · Teradyne, Inc. · Stock research

Current Thesis

The AI-test narrative did not break on fundamentals; it broke on positioning. Teradyne closed at a record $483.84 on 2026-06-30 after a run that had it up roughly 415% year-to-date, then lost a third of its value in twelve sessions $322.36 on 2026-07-17. The trigger was a sector-wide memory-glut scare on 2026-07-01/02, compounded by TSMC's capex-and-margin reset and a broad de-rate that produced the worst month for chip stocks versus software on record. Nothing company-specific has been disclosed. What has changed is that every buyer above $360 is now underwater into a binary print, and the company's own Q2 guide calls for a sequential revenue decline. The 2026-07-28 report is the event that decides whether this was a shakeout inside an intact capex upcycle or the first leg of a cycle top.

Bullish and bearish views on Teradyne, Inc.

The model's bull view on Teradyne, Inc. (TER), in brief: Q1 2026 (reported 2026-04-28) was a record: revenue $1.282B, +87% YoY, non-GAAP EPS $2.56, Semiconductor Test above $1B for the first time at $1,111M, AI-linked demand ~70% of mix versus ~60% in Q4 2025. The bear view: Management guided Q2 revenue to $1,150–1,250M and non-GAAP EPS to $1.86–2.15 a sequential step down from $1,282M and $2.56. Both cases follow in full.

Bull Case

• Q1 2026 (reported 2026-04-28) was a record: revenue $1.282B, +87% YoY, non-GAAP EPS $2.56, Semiconductor Test above $1B for the first time at $1,111M, AI-linked demand ~70% of mix versus ~60% in Q4 2025.
• TSMC raised 2026 capex guidance to $60–64B from a prior ceiling of $56B and lifted full-year revenue growth guidance to slightly above 40% a direct positive read-through to test intensity that the market sold anyway.
• The sell-side band re-rated hard into the peak and has not been cut: Cantor $550 (2026-06-29), Susquehanna $550 (2026-06-30), BofA $525 (2026-06-29), Goldman $465 (2026-07-06), Baird $446 (2026-06-23), consensus $423.41 across 18 analysts.
• HBM4 is a genuine test-intensity step-up: NVIDIA certified Samsung, SK Hynix and Micron for HBM4 in early 2026, with Micron targeting ~15,000 HBM4 wafers/week by end-2026 (TrendForce, 2026-01).
• A second growth leg is validating outside memory the first merchant-GPU SOC-test win (2026-04-28) carries ~$50M of FY2026 revenue with multi-system production orders and rising midterm contribution.
• The 2026-07-17 session traded $296.82 to $330.68 and closed $321.50, in the upper third of a 10%+ range. That is the first bar since the break where sellers lost control of the close.

Bear Case

• Management guided Q2 revenue to $1,150–1,250M and non-GAAP EPS to $1.86–2.15 a sequential step down from $1,282M and $2.56. An upcycle narrative colliding with a guided-down quarter is exactly the setup that punishes late longs.
• The April template already ran once: a record beat on 2026-04-28 was sold 17–19% because price had front-run the print. The condition into 2026-06-30 was the same, only more extreme, and it resolved the same way.
• The −33% drawdown from ATH has produced no base. Twelve sessions is not a bottom; it is a first leg. There is no higher low, no reclaim of a prior shelf, and no volume signature of accumulation.
• Analyst targets from $446 to $550 all sit above a $322 tape. Wide PT-to-spot gaps after a violent break reflect models that have not been revised, and they invite exactly the wrong kind of buyer.
• Advantest (6857.T) holds the incumbent HBM memory-test socket, and SK Hynix is internalizing system-level HBM4 test (TrendForce, 2026-02-25) structural competition against the leg the whole re-rate was built on.
• Concentration was flagged by management on the 2026-04-28 call: a ~70% AI mix routes revenue through fewer vertically integrated customers and a smaller set of large device programs, so order flow is lumpy and single-customer air pockets are large.
• At 59.9x trailing earnings and +242% YTD, valuation offers zero cushion if the second-half order commentary softens on 2026-07-29.

Setup & Price Structure

Closing ATH $483.84 on 2026-06-30, intraday high $487.91. The break came in stages: a −13.6% session in the first week of July took price from a $427.34 close to $369.09, a bounce to $379.52 on 2026-07-06 failed, an 8.6% sector-wide drop followed, and the low print so far is $296.82 on 2026-07-17. Spot $322.36 on 2026-07-17 sits roughly 34% below the high. The 52-week range is $89.18–$487.91, so the drawdown has retraced only a fraction of the 2026 advance there is a great deal of air beneath current price before any 2026 support becomes meaningful. Price is decisively below its rising short-term averages and the structure is a lower-high, lower-low sequence for the first time this year. The observable that matters near term is $296.82: holding it keeps the shakeout reading alive, losing it on a weekly basis converts the break into a trend change. On the upside, the $369–$380 zone where the first bounce failed is the level a genuine recovery has to reclaim.

Catalyst Calendar (next 30 days)

• 2026-07-28 Q2 2026 results, 16:30 ET. Guide: revenue $1,150–1,250M, non-GAAP EPS $1.86–2.15. The binary.
• 2026-07-29 Q2 conference call, 08:30 ET; presentation materials from 07:30 ET. Second-half order commentary, HBM4 test bookings, and whether the merchant-GPU win scales beyond ~$50M FY26 are the three specifics that matter more than the headline number.
• Late July 2026 semicap peer prints (AMAT/LRCX/KLAC/ONTO cluster) and Advantest (6857.T) memory-test commentary. Peer guides will reprice TER regardless of its own numbers.
• Ongoing through August 2026 memory-pricing datapoints and HBM4 wafer-allocation updates; the July selloff was a memory-glut scare, so contract-price prints are the direct disconfirming evidence.

What Would Change Our Mind

The constructive case requires a base, not a bounce. A weekly close below $296 breaks the flush low and reclassifies this as a trend change at that point the memory-glut scare has become a memory-glut fact and the whole 2026 re-rate is in question. A Q2 print landing at or under the $1.15B low end with no second-half raise does the same thing on fundamentals. Conversely, a print that holds or lifts full-year targets while confirming HBM order build, followed by a reclaim of the failed $369–$380 bounce zone on a higher low, restores the accelerating read. Absent either resolution, this is a name with a broken chart, a guided-down quarter, and an earnings event inside two weeks the combination that argues for standing aside rather than catching it. Buying because analyst targets sit $100–$230 — above spot is the specific mistake this tape is set up to punish.

Correlation Notes

TER trades as one unit with the semicap complex AMAT, LRCX, KLAC, ONTO and Advantest all moved together on the 2026-06-05 flush and again on 2026-07-01/02. Adding TER alongside any of them is a size increase on a single capex bet, not diversification. Second-order correlation runs through memory: Micron's contract pricing and HBM4 allocation are the upstream driver of the test-intensity story, and Micron's tape is the cleanest real-time proxy for whether the glut scare has legs. Third leg is the AI-infrastructure beta itself the 2026-07-17 framing of chip stocks having their worst month ever versus software describes a rotation out of hardware capex into software, and TER sits at the sharp end of that rotation. The robotics segment (Universal Robots, MiR, the Vention partnership announced 2026-06-22) is uncorrelated to all of it but too small to matter to the tape.