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Memory '26: HBM Testing
6 tickers · $210.86B total market cap
Group: Memory
The escalating demand for High Bandwidth Memory (HBM) in AI accelerators, coupled with its increasing architectural complexity and the transition to advanced packaging like hybrid bonding, makes rigorous and multi-stage testing a critical and growing bottleneck, driving significant investment in HBM testing solutions.
Memory '26: HBM Testing tracks 6 publicly listed stocks in this theme: AEHR, ATEYY, COHU, FORM, TER, TPRO.MI. See the constituent table for details.
Thesis update: 2026-03-04
Constituents
Build 20260415T080833
| Company | Previous Quarter Report Date | Next Expected Report Date | Last Quarter Earnings Move % | Earnings Move % | Intra-Quarter Move % | Since Last Report % | Market cap | Weight |
|---|---|---|---|---|---|---|---|---|
Advantest CorporationATEYY | 01/28/2026 (BMO) | 04/24/2026 (BMO) | 17.12% | — | -7.96% | — | $126.97B | 16.6667 |
Teradyne, Inc.TER | 02/02/2026 (AMC) | 04/27/2026 (AMC) | 7.83% | — | 35.84% | — | $57.22B | 16.6667 |
Technoprobe S.p.A.TPRO.MI | 03/18/2026 (BMO) | 05/11/2026 (BMO) | -17.43% | — | 26.35% | — | $12.52B | 16.6667 |
FormFactor, Inc.FORM | 02/04/2026 (AMC) | 04/29/2026 (AMC) | 26.16% | — | 42.08% | — | $10.00B | 16.6667 |
Aehr Test SystemsAEHR | 04/07/2026 (AMC) | 04/07/2026 (AMC) | 15.95% | 37.03% | 90.92% | 8.02% | $2.34B | 16.6667 |
Cohu, Inc.COHU | 02/12/2026 (AMC) | 04/30/2026 (AMC) | -6.71% | — | 25.85% | — | $1.81B | 16.6667 |
| Average | 7.15% | 37.03% | 35.51% | 8.02% | $35.14B | 16.6667 | ||
| Median | 11.89% | 37.03% | 31.09% | 8.02% | $11.26B | 16.6667 | ||
| Std Dev | 14.92% | 0.00% | 29.38% | 0.00% | $45.18B | 0.0% | ||
| Min | -17.43% | 37.03% | -7.96% | 8.02% | $1.81B | 16.6667 | ||
| Max | 26.16% | 37.03% | 90.92% | 8.02% | $126.97B | 16.6667 | ||
| % Positive Tickers | 66.67% | 100.00% | 83.33% | 100.00% |
* Provisional value: before LstRpt% reaches its 2-day post-report lock window (BMO/AMC adjusted), EarningsPerf is calculated from current vs pre-report and then locks to final LstRpt%.