Compare · AEHR vs CLS
AEHR vs CLS
Side-by-side comparison of Aehr Test Systems (AEHR) and Celestica Inc. (CLS): market cap, price performance, sector, and recent activity on the wire.
Summary
- AEHR operates in Industrials, while CLS operates in Technology - the two are in different parts of the market.
- CLS is the larger of the two at $34.65B, about 13.3x AEHR ($2.60B).
- Over the past year, AEHR is up 438.4% and CLS is up 88.2% - AEHR leads by 350.3 points.
- AEHR has been more active in the news (28 items in the past 4 weeks vs 6 for CLS).
- CLS has more recent analyst coverage (23 ratings vs 7 for AEHR).
- Company
- Aehr Test Systems
- Celestica Inc.
- Price
- $81.03-3.70%
- $301.31-0.76%
- Market cap
- $2.60B
- $34.65B
- 1M return
- -22.65%
- -21.10%
- 1Y return
- +438.44%
- +88.18%
- Industry
- Electrical Products
- Electrical Products
- Exchange
- NASDAQ
- NYSE
- IPO
- 1997
- 1998
- News (4w)
- 28
- 6
- Recent ratings
- 7
- 23
Aehr Test Systems
Aehr Test Systems primarily designs, engineers, manufactures, and sells test and burn-in equipment for use in the semiconductor industry in the United States, Asia, and Europe. It provides full wafer contact test systems, test during burn-in systems, test fixtures, and related accessories. The company offers Advanced Burn-in and Test System family of packaged part burn-in and test systems, which perform test during burn-in of complex devices, such as digital signal processors, microprocessors, microcontrollers, and systems-on-a-chip, as well as individual temperature control for high-power advanced logic devices. It also provides FOX systems, which are full wafer contact parallel test and burn-in systems designed to make contact with various pads of a wafer simultaneously; WaferPak contactor that includes a full-wafer probe card for use in testing wafers in FOX systems; DiePak carrier, a reusable and temporary package that enables integrated circuit (IC) manufacturers to perform test and burn-in of singulated bare die or very small multi-IC modules; and test fixtures that hold the devices undergoing test or burn-in and electrically connect the devices under test to the system electronics. In addition, the company offers WaferPak Aligner, which performs automatic alignment of the customer's wafer to the WaferPak contactor; and DiePak Loader that performs automatic loading of the customer's modules to the DiePak carrier. Further, Aehr Test Systems provides customer service and support programs, including system installation, system repair, applications engineering support, spare parts inventory, customer training, and documentation services. It markets and sells its products to semiconductor manufacturers, semiconductor contract assemblers, electronics manufacturers, and burn-in and test service companies through a network of distributors and sales representatives. Aehr Test Systems was founded in 1977 and is headquartered in Fremont, California.
Celestica Inc.
Celestica Inc. provides hardware platform and supply chain solutions in North America, Europe, and Asia. It operates through two segments, Advanced Technology Solutions, and Connectivity & Cloud Solutions. The company offers a range of product manufacturing and related supply chain services, including design and development, engineering, supply chain management, new product introduction, component sourcing, electronics manufacturing and assembly, testing, complex mechanical assembly, systems integration, precision machining, order fulfillment, logistics, asset management, product licensing, and after-market repair and return services. It also provides enterprise-level data communications and information processing infrastructure products, such as routers, switches, data center interconnects, servers, and storage-related products; capacitors, microprocessors, resistors, and memory modules; and power inverters, energy storage products, smart meters, and other electronic componentry. The company serves aerospace and defense, industrial, energy, healthtech, capital equipment, original equipment manufacturers (OEMs), cloud-based, and other service providers, including hyperscalers, and other companies in a range of industries. Celestica Inc. was incorporated in 1994 and is headquartered in Toronto, Canada.
Latest AEHR
- Director Scott Geoffrey Gates gifted 10,000 shares and sold $1,642,650 worth of shares (20,000 units at $82.13) (SEC Form 4)
- President and CEO Erickson Gayn covered exercise/tax liability with 3,447 shares, decreasing direct ownership by 2% to 198,578 units (SEC Form 4) (withholding obligation)
- CTO Richmond Donald P. Ii covered exercise/tax liability with 328 shares, decreasing direct ownership by 0.18% to 186,669 units (SEC Form 4) to cover withholding tax
- Exec VP of Sales & Mktg. Rogers Vernon exercised 40,000 shares at a strike of $1.63 and covered exercise/tax liability with 1,161 shares, increasing direct ownership by 25% to 192,424 units (SEC Form 4) to cover withholding tax
- Aehr Test Systems filed SEC Form 8-K: Results of Operations and Financial Condition, Financial Statements and Exhibits
- Aehr Test Systems Reports Fiscal 2026 Fourth Quarter and Full Year Financial Results with Record Quarterly Bookings and $100 Million Effective Backlog
- Aehr Receives More Than $8 Million in New Silicon Carbide Wafer-Level Burn-In Orders as Global Electric Vehicle Programs Accelerate
- VP Contactor Business Unit Sporck Alistair N covered exercise/tax liability with 209 shares, decreasing direct ownership by 0.80% to 26,014 units (SEC Form 4) to satisfy tax liability
- CFO Siu Chris covered exercise/tax liability with 988 shares, decreasing direct ownership by 1% to 77,824 units (SEC Form 4) to satisfy withholding obligation
- CTO Richmond Donald P. Ii covered exercise/tax liability with 423 shares, decreasing direct ownership by 0.23% to 186,997 units (SEC Form 4) to cover withholding tax
Latest CLS
- SEC Form 3 filed by new insider Dorwart Steven Gregg
- Celestica Inc. filed SEC Form 8-K: Leadership Update, Financial Statements and Exhibits
- Celestica Q2 2026 Financial Results and Conference Call Tuesday, July 28, 2026
- Celestica Announces Leadership Transition in its Connectivity and Cloud Solutions Segment
- Director Cascella Robert converted options into 84 shares and covered exercise/tax liability with 5 shares, increasing direct ownership by 54% to 226 units (SEC Form 4) (for withholding tax)
- Director Kale Jill converted options into 155 shares and covered exercise/tax liability with 9 shares, increasing direct ownership by 54% to 416 units (SEC Form 4) to cover withholding tax
- Chief Executive Officer Mionis Robert sold $7,000,835 worth of shares (18,176 units at $385.17) as part of a pre-agreed trading plan (SEC Form 4)
- Chief Executive Officer Mionis Robert sold $21,580,050 worth of shares (55,768 units at $386.96) as part of a pre-agreed trading plan (SEC Form 4)
- Chief Executive Officer Mionis Robert sold $26,426,178 worth of shares (66,056 units at $400.06) as part of a pre-agreed trading plan (SEC Form 4)
- Chief Financial Officer Chawla Mandeep sold $6,794,078 worth of shares (17,000 units at $399.65) as part of a pre-agreed trading plan, decreasing direct ownership by 17% to 82,444 units (SEC Form 4)