Memory chips remain one of the clearest ways to invest in AI infrastructure, but the thesis has evolved beyond a straightforward accelerator trade. AI servers require substantially more memory per system, and high-bandwidth memory is becoming a strategic input that can constrain the deployment of otherwise powerful computing hardware. That is shifting investor attention toward companies with exposure to pricing power, advanced manufacturing and supply-constrained products rather than simple unit growth. The backdrop is especially important after the latest memory upcycle produced stronger earnings and renewed confidence in industry discipline.
The main areas to understand are DRAM, HBM and NAND. DRAM and HBM have the most direct connection to AI training and inference, while NAND is more closely tied to solid-state storage, enterprise data growth and cloud capacity. Hyperscaler capital spending, customers securing supply in advance and tighter production discipline are supporting the group. A June 25 report that customers had committed $22 billion to lock in memory supply underscored how quickly demand can tighten the market, even though memory remains a cyclical industry exposed to oversupply and changing technology mixes.
This countdown covers seven US-listed stocks spanning memory manufacturers, NAND storage specialists, semiconductor-equipment suppliers and hard-drive companies that benefit from data-center storage demand. The ranking runs from #7 up to #1. Exposure to the memory-chip theme is the first consideration, followed by business fundamentals, growth, profitability, valuation and evidence that companies are executing against current expectations.
Our screen covers US-listed companies with market capitalizations above $500 million and a meaningful connection to memory chips, semiconductor manufacturing or data-center storage. We ranked the candidates first by depth of exposure to DRAM, HBM or NAND and then by fundamentals, including revenue and earnings growth, margins, valuation, balance-sheet considerations, earnings execution and analyst sentiment. The list is presented in countdown order, so the highest-ranked idea is intentionally reserved for #1 at the end. Composite quality grades and primary-source financial data provide an additional cross-check rather than replacing investor judgment.
What they do. The company develops and sells data-storage devices and solutions built primarily around hard-disk-drive technology. Its portfolio includes internal and data-center drives, data-center platforms, external and portable drives, network-attached storage and related accessories, sold through direct sales personnel, dealers, distributors, retailers and subsidiaries. That makes Western Digital a storage infrastructure business rather than a direct DRAM or HBM producer, with its competitive position tied to serving large-scale data-storage requirements.
Why it fits. Western Digital offers the most indirect memory-theme exposure in this group, but its data-center drives and storage platforms participate in the same expanding data infrastructure cycle. AI systems generate significant quantities of training and inference data that must be stored, accessed and archived. The company also has a collaboration to develop quantum error-correction technology, although the core investment case in the supplied data remains its HDD-based storage business.
Numbers that matter. Revenue was $12.919 billion, with 43.8% year-over-year revenue growth. The supplied profitability data shows a 48.9% gross margin, 43.61% operating margin and 72.95% net margin, while return on equity was 130.85% and return on assets was 20.76%. The core trailing P/E was 15.8507 and forward P/E was 20.5761, but the composite metrics rated the stock Neutral overall, with weaker DCF, P/E and price-to-book components offsetting strong return metrics.
Recent momentum. Western Digital beat estimates in six of its last seven reported quarters. In the latest completed quarter on August 5, 2026, EPS was $3.47 versus a $3.24 estimate, a 7.1% beat; the prior quarter produced a 13.8% beat. Analysts show four Buys, three Holds and one Sell, with an average target of $664.9167. The key limitation is that the business remains tied more closely to storage hardware and HDD cycles than to the highest-growth HBM and DRAM segments.
What they do. Seagate provides data-storage solutions, including internal and external hard drives, enterprise hard drives and solid-state drives, storage systems, network-attached-storage drives and products for video and analytics. It sells primarily to original equipment manufacturers, distributors and retailers, serving healthcare, media and entertainment, surveillance, security, telecommunications and hyperscale customers. The business therefore monetizes the need to store and manage data across both enterprise and consumer channels.
Why it fits. Seagate is another indirect memory-theme play, with its strongest connection coming through hyperscale and cloud storage rather than DRAM or HBM manufacturing. AI data centers need large storage layers alongside accelerators and memory, and Seagate's enterprise drives, SSDs and storage systems are positioned around that requirement. The exposure is meaningful, but the company ranks below memory manufacturers because storage capacity growth does not provide the same direct leverage to HBM pricing.
Numbers that matter. Revenue was $12.195 billion and grew 48.5% year over year, while earnings growth reached 148.8%. Seagate reported a 45.6% gross margin, 43.07% operating margin and 26.11% net margin, with return on equity of 37.15% and return on assets of 29.35%. The trailing P/E was 57.8135 compared with a forward P/E of 22.5225, indicating that the earnings outlook is doing substantial work in the valuation. The composite grade was B, with strong return metrics offset by debt-to-equity, P/E and price-to-book concerns.
Recent momentum. Seagate delivered a seven-for-seven record of earnings beats in the supplied history. Its July 28, 2026 quarter produced EPS of $5.48 against a $4.89 estimate, a 12.1% beat, following a 16.8% beat in April. Analyst sentiment is more cautious than the operating momentum: one analyst rates it Buy, eight rate it Hold and one rates it Sell, producing a 3.9565 consensus score. The average analyst target is $1,125.
What they do. KLA supplies process-control and process-enabling systems used to manufacture wafers, reticles, integrated circuits, packaged chips and printed circuit boards. Its products include inspection and review tools, metrology systems, chemical process-control equipment, semiconductor software and specialty manufacturing solutions, alongside service programs. KLA earns revenue by selling and servicing specialized equipment that helps chipmakers identify defects and control yield during increasingly complex production processes.
Why it fits. KLA does not manufacture memory chips, so its exposure is through the equipment required to produce them reliably. As DRAM, HBM and NAND processes become more demanding, inspection, metrology and defect-control systems become important to improving yield and protecting the economics of new capacity. That makes KLA a picks-and-shovels beneficiary of memory investment, although its broad semiconductor customer base makes it less pure-play than the memory producers.
Numbers that matter. KLA generated $13.579 billion of revenue, up 15.2% year over year, while earnings growth was 13.8%. Its 61.3% gross margin, 42.49% operating margin and 35.57% net margin demonstrate the economics of a specialized equipment and service model; return on equity was 87.5% and return on assets was 20.8%. The trailing P/E was 45.7268 and forward P/E was 31.0559, a premium valuation that reflects quality but leaves less room for execution disappointments.
Recent momentum. KLA beat estimates in all seven completed quarters in the supplied history. On July 28, 2026, EPS came in at $1.05 versus a $1.00 estimate, a 5.0% beat, after a 2.2% beat in April. Analysts list five Buys, 10 Holds and one Sell, for a 4.0667 consensus score, with an average target of $233.7692. The consistent beats support the operating case, but the premium multiple and broad equipment exposure explain why it ranks below the more direct memory names.
Get AI research on any stock
Instant reports, daily intelligence, and an AI analyst in your pocket.
What they do. Applied Materials supplies semiconductor manufacturing equipment, services and software through its Semiconductor Systems and Applied Global Services businesses. Its systems support deposition, etch, rapid thermal processing, chemical mechanical planarization, metrology, inspection, wafer packaging and ion implantation, while its services business provides spares, upgrades, maintenance and factory-automation software. The revenue model combines equipment sales with recurring service and productivity offerings to chip manufacturers worldwide.
Why it fits. Applied Materials benefits when memory manufacturers add capacity or adopt more advanced process steps, even though it sells tools rather than memory chips. Deposition, etch, inspection, packaging and related materials-engineering technologies are directly relevant to DRAM, NAND and other semiconductor production. The company is therefore a diversified enabler of the memory buildout, with less direct pricing exposure than a chip producer but a broader equipment and services base.
Numbers that matter. Revenue reached $30.837 billion, up 24.8% year over year, while earnings growth was 42.8%. Applied Materials reported a 49.4% gross margin, 33.74% operating margin and 30.05% net margin, along with 41.07% return on equity and 15.48% return on assets. Its trailing P/E was 36.373 and forward P/E was 23.5849. Those figures combine strong growth and profitability with a valuation that still assumes continued semiconductor capital spending.
Recent momentum. Applied Materials has beaten estimates in all eight quarters listed. The latest completed report, dated August 13, 2026, showed EPS of $3.50 versus a $3.38 estimate, a 3.6% beat; the preceding quarter produced a 6.3% beat. Analysts show four Buys and eight Holds, with no Sell count supplied, resulting in a 4.4872 consensus score and an average target of $640.8857. Its execution record is strong, but its ranking reflects indirect exposure compared with pure memory manufacturers.
What they do. Lam Research designs, manufactures and services semiconductor-processing equipment used to fabricate integrated circuits. Its portfolio includes deposition, electrochemical deposition, atomic-layer deposition, conductor and dielectric etch, deep-silicon etch, wafer cleaning, bevel cleaning, customer-service, spares and upgrade products. The company earns from equipment placements and the continuing service, replacement and upgrade requirements of chip-fabrication customers.
Why it fits. Lam has especially relevant exposure to memory manufacturing because its supplied product portfolio includes selective etch systems used in advanced logic and memory devices. Etch and deposition become increasingly important as manufacturers stack NAND layers and pursue tighter geometries in DRAM and HBM-related production. This gives Lam a strong infrastructure connection to the memory cycle, although equipment demand remains dependent on customers' capital budgets and the company also serves non-memory chipmakers.
Numbers that matter. Lam generated $23.233 billion in revenue, with year-over-year revenue growth of 30.0% and earnings growth of 34.8%. Its profitability profile included a 50.5% gross margin, 37.39% operating margin and 31.27% net margin, while return on equity reached 65.07% and return on assets 22.84%. The trailing P/E was 47.3549 and forward P/E was 29.5858, so the stock combines strong operating momentum with a demanding valuation.
Recent momentum. Lam has beaten estimates in each of the seven completed quarters listed. Its July 29, 2026 report delivered EPS of $1.82 against a $1.69 estimate, a 7.7% beat, following an 8.1% beat in April. The analyst breakdown is four Buys and nine Holds, with no Sell count supplied; the consensus score is 4.3333 and the average target is $373.129. The combination of memory-sensitive equipment exposure and consistent execution places Lam near the top of the equipment portion of this ranking.
Pick #2Premium members only
Premium members see this pick's full breakdown — investment thesis, key financial metrics, recent earnings execution, and analyst consensus.
Premium members get the complete breakdown — pick rationale, financial metrics, and recent earnings detail.
The screen began with US-listed companies above $500 million in market capitalization that have a meaningful connection to memory chips, semiconductor manufacturing or data-center storage. Companies were ranked in countdown order, from #7 to #1, with depth of exposure to DRAM, HBM and NAND as the primary criterion. Business fundamentals then determined the ordering within that framework, including revenue growth, earnings growth, gross and operating margins, return metrics, valuation, balance-sheet indicators, earnings-beat history and analyst consensus. The composite quality grade is included as a standardized reference point. The article is refreshed monthly, so valuation, earnings history, analyst views and company relevance can change between editions.
▌The Daily Briefing · Free
A new stock idea, every evening.
One stock worth watching each weekday, plus the analysis behind it. Free, in your inbox.
