Finvest
FORM Semiconductors · Semiconductor equipment · AI infrastructure · Small cap · Thesis updated June 14, 2026

AI memory helps, systems transition hurts

01 Running thesis

AI strength, with a new wobble

FormFactor is a test equipment company tied to the health of chip spending. Its best current story is DRAM, where demand for HBM, a type of high-speed memory used in AI systems, drove 69.7% year-over-year growth in Q1 2026.

The latest quarter also brought a helpful turn in Foundry & Logic. That market grew 30.4% year over year in Q1 2026 after falling in FY2025. If that rebound keeps going, FormFactor has a second growth driver beyond AI memory.

The concern is Systems. This segment fell 19.9% year over year in Q1 2026. Management says the drop comes from a product shift toward Triton, its new co-packaged optics testing platform. That may be temporary, but it needs proof through orders and revenue.

Finn's view is balanced. Growth is better than it looked a few quarters ago, but the stock still has to earn its price. Tariffs, China weakness, and Texas factory start-up costs keep the margin story from being clean.

May 2026▲Q1 2026 improved the core story. Foundry & Logic grew 30.4% year over year and DRAM grew 69.7%, while Systems weakness became the main item to watch.
Feb 2026→FY2025 confirmed strong AI-led DRAM demand, but Foundry & Logic was still weak for the year. The filing also added pressure from tariffs and $20 million to $25 million of expected FY2026 Texas start-up costs.
Nov 2025→DRAM re-accelerated on HBM demand, but Foundry & Logic weakened and Systems nearly stalled. The picture became more mixed despite the AI tailwind.
Aug 2025▼Q2 2025 raised questions about AI demand timing, with DRAM revenue down 1.7% year over year. Margins also fell due to tariffs and an unfavorable DRAM product mix.
May 2025▲Q1 2025 improved the setup because Systems returned to growth and Probe Cards gross margin improved. FormFactor also disclosed a $67.2 million investment for a 20% share in FICT.
Feb 2025→FY2024 showed the power and cost of AI memory demand. DRAM revenue grew 99.9%, but a heavier mix of lower-margin DRAM products pressured Probe Cards margins.
Nov 2024▲The initial thesis centered on FormFactor as a key semiconductor test supplier. HBM demand for generative AI became the main bull case, balanced by chip cycle and margin risk.
02 Business model

Paid to find bad chips early

FormFactor sells test and measurement tools to semiconductor makers and research labs. Its products help customers find chip problems before bad chips reach final products. That matters because advanced chips are costly to design and produce.

Most revenue comes from probe cards and analytical probes. A probe card touches a wafer, which is a round sheet of unfinished chips, and tests whether each chip works. FormFactor also sells probe stations, thermal systems, and cryogenic systems used in research, design, and debugging.

The business can work well when customers are ramping new chip designs, especially AI memory and high-performance compute chips. It can break when chip makers cut production, delay new designs, or shift to products where FormFactor has lower margins.

The company is also placing longer-term bets. It bought Keystone Photonics in December 2025 to build strength in silicon photonics and co-packaged optics, areas tied to AI data center networking. It also invested $67.2 million in Q1 2025 for a 20% share in FICT, a supplier of advanced substrates and PCBs.

03 Product portfolio

The test stack

Growth engine

DRAM and HBM probe cards

These test memory chips on wafers. HBM demand for AI systems drove the strongest recent growth.

Cash cow

Foundry & Logic probe cards

These serve processors, networking chips, and high-performance compute designs. Q1 2026 growth suggests this market may be recovering.

Steady

Analytical probes

These are used to measure and debug chips during development. They help customers improve performance before full production.

Steady

Probe stations

These hold and test semiconductor devices in labs and fabs. Recent demand has been mixed as customers shift away from legacy offerings.

Steady

Thermal systems

These test how chips behave at different temperatures. Thermal systems partly offset weakness in other Systems products in Q1 2026.

Option

Cryogenic systems

These test devices at very low temperatures. They are tied to advanced research markets but can be uneven quarter to quarter.

Option

Triton CPO testing platform

Triton targets co-packaged optics, where optical links sit close to chips to move data faster. A successful ramp could restart growth in Systems.

04 Business segments

Probe Cards carry the weight

Probe Cards88%growing fast
Systems12%declining

Segment mix uses Q1 2026 revenue: Probe Cards at $198.3 million and Systems at $27.9 million. Probe Cards is now most of the business, so swings in DRAM and Foundry & Logic drive the stock story.

05 Risk factors

What could go wrong

Triton ramp disappoints

Medium impact · Medium odds

Systems was a growth support in FY2025, then fell 19.9% year over year in Q1 2026. Management says this is a transition toward Triton, not a demand collapse. If customers do not adopt Triton, Systems could stay weak.

We watchSystems revenue growth and any management comments on Triton customer adoption.

HBM demand cools

High impact · Medium odds

DRAM growth is tied to HBM chips used in AI systems. That demand was strong in Q1 2026, but earlier quarters showed that timing of customer designs and reorders can move results. A pause in AI memory spending would hit the main growth engine.

We watchDRAM revenue growth, HBM design activity, and customer reorder timing.

Margins get squeezed

High impact · Medium odds

Gross margins are under pressure from tariffs and higher manufacturing costs. The Texas facility adds another cost layer, with $7.1 million of start-up costs in Q1 2026 and management expecting costs to continue through at least Q4 2026. Revenue growth may not fully show up in profit if these costs stay high.

We watchGross margin, tariff comments, and quarterly Texas factory start-up costs.

Texas factory delay

Medium impact · Medium odds

FormFactor bought a Texas manufacturing site in June 2025 for $55 million. The FY2025 filing added risks around delays, cost overruns, and yield targets. If the site ramps late or poorly, costs could rise before revenue benefits arrive.

We watchInitial production timing in late FY2026 and any change in start-up cost guidance.

China keeps shrinking

Medium impact · Medium odds

China revenue fell to 5.0% of total revenue in Q1 2026, down from 7.9% in Q1 2025 and 7% for FY2025. U.S.-China trade limits and customer caution can affect ordering. The direct exposure is smaller now, but the decline also removes a market that once mattered more.

We watchChina revenue share and any new export controls or tariff changes.
06 Quick answers

In one breath

What does FormFactor actually do?

FormFactor makes tools that test semiconductor wafers and advanced devices. Its probe cards help chip makers find defects before chips are packaged and sold.

Why is FormFactor linked to AI?

AI servers use HBM, a high-speed memory type that needs advanced testing. FormFactor sells DRAM probe cards used for these memory designs, and that has been a major growth driver.

What is the biggest near-term issue for FORM?

The Systems segment needs to prove that its Triton product shift can bring growth back. Investors also need to watch whether tariffs and Texas factory costs keep hurting margins.

Is China still important for FormFactor?

China is less important than before, but still worth watching. Its share of revenue fell to 5.0% in Q1 2026, which lowers direct exposure but shows ongoing pressure from trade tensions.