HIGHOutside partyCustomer
70%
five largest customers
“10-K Item 1A: 'Sales to our five largest customers accounted for approximately 70%, 77%, and 93% of our net sales in fiscal 2026, 2025, and 2024, respectively.'”
AEHR · Concentration risk · 10-K extracted
Aehr Test Systems (AEHR) concentration risks
Updated
The most significant concentration Aehr Test Systems discloses is five largest customers at 70%, classified HIGH by disclosed size. Below: the full set from the latest 10-K — verbatim quotes, filing references, and a synthesis of what these exposures mean together.
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Source: Aehr Test Systems’s SEC Form 10-K filed — view the filing on SEC EDGAR ↗
At a glance
Disclosed-size breakdown · 2 disclosed concentrations
HIGH2
MEDIUM0
LOW0
Disclosed concentrations
Each card carries a disclosed-size chip (HIGH / MEDIUM / LOW — how large the exposure is as a share of revenue, not how dangerous it is) and a nature tag: Built-in(the company’s own model, geography, or products) or Outside party (an external customer, supplier, or distributor it relies on).
HIGHBuilt-inProduct / Revenue mix
63%
full wafer contact product lines
“10-K Item 1: 'Net revenues of full wafer contact product lines, systems, WaferPak Contactors and services ... accounted for approximately 63%, 66%, and 98%'”
TrendMatrix Research · concentration synthesis
What these concentrations mean together
updated 2026-10-18Aehr's disclosed exposures are concentrated on both the customer and the product side, and the two reinforce each other. Sales to the five largest customers were approximately 70% of net sales, down from 77% and 93% in the two prior fiscal years. That is a large-share exposure and a dependency in character: the loss or delay of an order from any one of a handful of buyers would register directly in reported revenue. The product mix is the structural counterpart. Full wafer contact product lines, systems, WaferPak Contactors and services accounted for approximately 63% of net revenues, compared with 66% and 98% earlier. The filing's own trend shows the business broadening away from a single franchise, yet that franchise still carries most of the revenue. Netted together, customer dependency is the idiosyncratic risk that could move the verdict quickly, while product concentration is a slower-moving structural feature of the company's niche. The declining percentages in both disclosures are encouraging, but both exposures remain large in share.
For the engine’s reasoning on AEHR’s current verdict — including which dimensions drove the score — see the per-dimension breakdown.
Industry peers · Semiconductor Equipment & Materials
Peer concentration profile
| Symbol | Name | HIGH | MEDIUM | LOW | Total |
|---|---|---|---|---|---|
| ACLS | Axcelis Technologies, Inc. | 3 | 1 | 0 | 4 |
| ACMR | ACM Research, Inc. | 3 | 0 | 0 | 3 |
| AMBA | Ambarella, Inc. | 3 | 0 | 0 | 3 |
| AMAT | Applied Materials, Inc. | 2 | 0 | 2 | 4 |
| AEHR● | Aehr Test Systems | 2 | 0 | 0 | 2 |
| AMKR | Amkor Technology, Inc. | 1 | 2 | 0 | 3 |
Concentration counts reflect items disclosed in each peer’s most recent 10-K; disclosed-size classification uses TrendMatrix’s internal 10-K extraction taxonomy.