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Teradyne Gains 130% YTD: Should You Hold or Fold the Stock?

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Key Takeaways

  • Teradyne shares are up 129.6% YTD as AI demand fuels cloud build-outs and semiconductor test spending.
  • Memory revenues hit a record $212M in Q2, with book-to-bill above 2 and further second-half growth expected.
  • TER expects Q3 revenues of $1.20-$1.30B, while premium valuation, competition and margin pressure pose risks.

Teradyne (TER - Free Report) shares have surged 129.6% in the year-to-date period, outperforming the Zacks Computer & Technology sector and the Zacks Electronics - Miscellaneous Products industry’s 24.1% and 50.3% increases, respectively.

TER shares have also outperformed its peers, which include Vertiv (VRT - Free Report) and KLA (KLAC - Free Report) . Both companies are expanding their footprint in the AI infrastructure space. Vertiv and KLA shares have soared 56.5% and 70.2%, respectively, in the year-to-date period.

Teradyne is benefiting from strong AI-related demand, which is driving significant investments in cloud AI build-out as customers accelerate production of a wide range of AI accelerators, networking, memory and power devices. These factors are helping Teradyne fend off competitors such as Vertiv and KLA.

TER Stock Performance

Zacks Investment Research
Image Source: Zacks Investment Research

TER Benefits From Expanding Memory Test Portfolio

Teradyne is benefiting from rising demand for advanced memory testing, supported by strong high-bandwidth memory (HBM), DRAM and NAND requirements tied to artificial intelligence (AI) infrastructure. The company’s expanding memory test portfolio, led by Magnum platforms, has been noteworthy. It highlighted that Magnum testers combine memory and logic-test capabilities, providing memory manufacturers with attractive swing-tool flexibility.

Memory has emerged as an important growth engine for Teradyne. In the second quarter of 2026, memory revenues reached a record $212 million, marking the third consecutive quarter above $200 million. Growth was driven by robust demand for HBM and DRAM test solutions, as well as a recovery in NAND. Memory book-to-bill exceeded 2, indicating solid demand visibility. Management expects the 2026 memory test TAM to be more than 40% higher than 2025, supported by HBM, DRAM and NAND growth. 

Further expanding its memory test portfolio, Teradyne recently launched Magnum E2, a next-generation high-speed memory test system designed to address growing test requirements driven by artificial intelligence and high-performance computing. Built on the company’s Near-DUT Test architecture, Magnum E2 supports advanced DRAM and flash interfaces, including LPDDR6, DDR6, GDDR7 and NAND flash. The platform offers higher parallelism, improved signal integrity and support for NRZ, PAM3 and PAM4 signaling. It also combines memory and logic testing on a single platform, helping manufacturers simplify testing while supporting qualification through high-volume production.

Rising memory bit production and technology transitions such as HBM3 to HBM4, DDR5 to DDR6, and next-generation flash should further increase test requirements, supporting Teradyne’s ability to expand its memory-testing footprint. Management expects memory revenues to grow in the second half compared to the first half.

TER Initiates Positive Q3 Guidance

Teradyne’s expanding portfolio and strong demand for AI-related applications are expected to drive the company’s top-line growth.

For the third quarter of 2026, Teradyne expects revenues in the range of $1.20-$1.30 billion. The Zacks Consensus Estimate for third-quarter 2026 revenues is pegged at $1.27 billion, suggesting a 65.20% year-over-year increase. 

For the third quarter, the company’s non-GAAP earnings are expected to be between $1.85 and $2.15 per share. The consensus mark for earnings is pegged at $2.04 per share, which has been unchanged over the past 30 days. This indicates growth of 140% on a year-over-year basis.

TER Faces AI Test Competition and Margin Risks

Despite expanding portfolio and strong demand for AI-related applications, the company suffers from stiff competition in the AI infrastructure space from companies like Cohu (COHU - Free Report) . The company is also suffering from customer concentration, program timing, muted mobile demand, memory-driven margin dilution, higher operating spending and currency exposure.

Cohu’s improving semiconductor test demand and expanding exposure to AI computing, HBM inspection and software remain noteworthy. Growth in AI workloads is driving demand for HBM, and Cohu has established a position in this market through its Neon inspection platform. Cohu is extending its Neon inspection platform across HBM3, HBM4 and HBM4E production while investing in HBM5 and later generations.

TER Trades at a Premium

Teradyne shares are currently overvalued, as suggested by its Value Score of D.

Teradyne stock is trading at a premium with a forward 12-month Price/Sales of 11.93X compared with the Computer & Technology sector’s 6.18X.

TER Valuation

Zacks Investment Research
Image Source: Zacks Investment Research

What Should Investors Do With TER Stock?

Teradyne’s robust, diversified portfolio, which meets the rising demand for AI-driven technologies, is consistently contributing to its growth prospects. However, stretched valuation, rising competition and margin pressure pose risks.

Teradyne currently has a Zacks Rank #3 (Hold), suggesting that it may be wise to wait for a more favorable entry point to accumulate the stock. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

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