FORM vs TER: Which Is the Better Buy in 2026?
Last updated August 2026
Short answer
FORM (FormFactor) and TER (Teradyne) share investment themes but are different businesses. The right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme.
FORM vs TER: the tie-breaker metrics
Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.
| Metric | FORM | TER | What it tells you |
|---|---|---|---|
| Forward P/E | 30.56 | 31.83 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Trailing P/E | 73.24 | 50.51 | Valuation on the last 12 months. A big drop from trailing to forward means the market expects earnings to jump, so more growth is already in the price. |
| Beta | 1.22 | 1.74 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 59% of range | 69% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 7.46 | 18.31 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Before you buy: how FORM and TER affect your concentration
The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. FORM and TER share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.
This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined FORM and TER exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.
What does FormFactor (FORM) do?
FormFactor, Inc. designs and makes electrical and optical test and measurement products used across the semiconductor lifecycle, from characterization and reliability work to high-volume production test. Its business runs in two segments: Probe Cards (the core franchise, including advanced probe cards for foundry and logic, DRAM, and flash) and Systems (probe stations, thermal subsystems, and analytical probes). The company sits between chip designers and the fabs, and its products are consumed as leading-edge nodes, high-bandwidth memory (HBM), and advanced-packaging designs ramp, making it a supplier that benefits when more complex, AI-oriented chips need testing.
What does Teradyne (TER) do?
Teradyne designs and sells automated test equipment (ATE) used to verify that semiconductors work before they ship. Its largest business, Semiconductor Test, sells systems like the UltraFLEX and J750 platforms that test system-on-chip (SoC) and memory devices, including the high bandwidth memory and compute processors that power AI data centers. The company makes money mostly from selling these test systems plus recurring service, software, and consumables. Beyond chip test, Teradyne runs a Robotics segment built around Universal Robots (collaborative robot arms) and Mobile Industrial Robots (MiR autonomous mobile robots), plus a smaller Product Test unit, giving it exposure to factory and warehouse automation alongside the core test franchise.
FORM vs TER: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- FORM drivers: AI and high-bandwidth memory testing; Advanced foundry and logic nodes.
- TER drivers: AI compute and HBM test demand; Memory and HBM share gains.
Which fits which kind of investor
A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: FormFactor is exposed to the semiconductor cycle, so downturns in memory or foundry capital intensity can cut orders quickly since probe cards track production volumes. For TER, semiconductor test equipment is one of the most cyclical corners of the chip industry, and Teradyne's revenue can swing materially as customers add or pause capacity.
FORM or TER: which should you pick?
FORM vs TER: the full fundamentals
FORM. FormFactor posted a record Q1 2026 with revenue near $226M, up roughly 32% year over year, led by foundry-and-logic and HBM DRAM probe cards. At a market cap around $10.5B against about $785M of trailing revenue, the stock trades at a rich price-to-sales multiple, reflecting expectations for continued AI-driven growth. Management guided Q2 2026 revenue to roughly $240M and reiterated its longer-term doubling roadmap.
TER. Teradyne's Q1 2026 results set records on AI-driven semiconductor test demand, with Semiconductor Test passing $1 billion in quarterly revenue for the first time. The valuation reflects high expectations for continued AI test demand, so the multiple is elevated relative to the broader semiconductor group. These figures are point-in-time and change with each earnings report and with the stock price, so confirm current numbers before relying on them.
Headline figures (approximate, APRIL 2026): FORM shows revenue (ttm) ~$785M, q1 2026 revenue ~$226M (up ~32% YoY), q1 2026 non-gaap eps ~$0.56, non-gaap gross margin ~49%; TER shows q1 2026 revenue ~$1.28 billion (up ~87% year over year), segment mix (q1 2026) ~$1,111M Semiconductor Test, ~$91M Robotics, ~$80M Product Test, ai-related revenue ~70% of total revenue tied to AI demand, gross margin ~60.9% (record), non-GAAP operating margin ~37.5%.
The bottom line: FORM vs TER
FORM and TER are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined FORM and TER exposure against your real portfolio. It is not an investment adviser.
Wondering how FORM or TER fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in FormFactor with AI
Connect the broker you already use and ask Walnut's AI how FORM fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between FORM and TER?
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FormFactor, Inc. Teradyne designs and sells automated test equipment (ATE) used to verify that semiconductors work before they ship. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is FORM or TER the better stock?
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Neither is universally better; they suit different views and risk levels. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, FORM or TER?
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On forward P/E (as of August 2026), FORM trades at 30.56x and TER at 31.83x, so FORM is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both FORM and TER?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of FORM vs TER?
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FORM: FormFactor is exposed to the semiconductor cycle, so downturns in memory or foundry capital intensity can cut orders quickly since probe cards track production volumes. Competition is a real pressure: Technoprobe has been winning leading-edge logic qualifications (including a reported share of TSMC 2nm work) and rivals like Micronics Japan, JEM, and MPI compete in memory and mid-range applications. Customer concentration among a small number of large chipmakers and memory makers means a single customer's pause can move results. The stock also carries an elevated valuation relative to trailing revenue and earnings, so any growth disappointment or guidance miss can trigger sharp moves, as the market has shown even around record quarters. Broader factors like export controls, tariffs, and AI-spending durability add macro uncertainty. TER: Semiconductor test equipment is one of the most cyclical corners of the chip industry, and Teradyne's revenue can swing materially as customers add or pause capacity. The customer base is concentrated, so a handful of large memory and compute customers drive a large share of orders, and an order delay at any of them can dent a quarter. The robotics business is growing but still small and has historically ramped slowly, so it cannot fully offset a test downturn. Teradyne also competes directly with Advantest, which leads the broader ATE market, so share shifts and pricing pressure are ongoing risks. After a large run-up the shares have at times carried an elevated valuation, which leaves less margin for error if AI test demand normalizes.
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Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell FORM or TER; figures are approximate and dated (as of August 2026). Verify current data before investing.