Astera Labs vs. Applied Materials: Which Technology Stock Is a Better Buy in 2026?

High-performance computing is currently undergoing a massive generational shift. Deciding between Astera Labs Inc (NASDAQ:ALAB) and Applied Materials Inc (NASDAQ:AMAT) means choosing between a fast-growing connectivity specialist and an established titan of manufacturing equipment.

Astera Labs focuses on the internal plumbing of data centers, providing chips that move data between processors. Applied Materials builds the actual machines that make those chips possible. While both benefit from artificial intelligence, they occupy very different rungs on the technology ladder.

The case for Astera Labs

Astera Labs sells high-speed connectivity hardware and software designed for AI-heavy data centers. Its primary products include PCIe and Ethernet solutions that help hyperscale cloud providers manage massive data workloads. In its latest annual report, filed for the period ending December 31, 2025, the company noted that one end customer represented more than 70% of its revenue. Customer concentration like this adds a layer of risk to the business.

In FY 2025, revenue reached nearly $853 million, which is an increase of approximately 115% over the prior year. This growth resulted in a net income of roughly $219 million, compared to a net loss in the previous fiscal year. The company recorded a net margin of close to 26% during this period. Such expansion is notable among semiconductor stocks catering to the cloud market.

The company carries no debt, resulting in a debt-to-equity ratio of 0.0x. This metric compares total debt to shareholder equity to show how a firm finances its assets. As of its December 2025 balance sheet, the so-called current ratio was nearly 10.2x, indicating a strong ability to cover short-term debts. Free cash flow was roughly $282 million. Note that stock-based compensation represented just about 50% of operating cash flow, which inflates reported cash generation since SBC is a non-cash expense added back in the cash flow statement.

The case for Applied Materials

Applied Materials provides the specialized equipment and materials-engineering solutions used to manufacture semiconductors and advanced displays. Its tools are essential for logic and memory chip production, serving a broad global customer base. In its latest annual report, filed for the fiscal year ended Oct. 26, 2025, two major customers accounted for approximately 19% and 15% of net revenue, respectively. This customer concentration means the company is sensitive to the spending plans of a few large manufacturers.

In FY 2025, revenue reached nearly $28.4 billion, reflecting a growth rate of more than 4% year over year. The company generated a net income of approximately $7 billion, maintaining a steady performance in a mature market. Its net margin was close to 25% for the year. While the growth rate is slower than that of smaller peers, the sheer scale of the revenue base provides significant stability.

As of its October 2025 balance sheet, the debt-to-equity ratio was roughly 0.3x. This ratio shows that for every dollar of equity, the company has about 30 cents in debt. Its current ratio stands at approximately 2.6x, indicating the firm has more than twice the short-term assets needed to cover its liabilities. Free cash flow for the fiscal year was nearly $5.7 billion. This cash flow, which is cash from operations minus capital spending, allows for consistent investment in research and development.

Risk profile comparison

Astera Labs faces substantial risks due to its heavy reliance on a small number of hyperscale customers like Amazon.com Inc (NASDAQ:AMZN). The loss of a single major partner or a reduction in AI infrastructure spending could severely impact its financial results. Furthermore, the company relies on third-party partners for integrated circuit fabrication, creating a bottleneck if manufacturing capacity is constrained. Geopolitical tensions in East Asia also threaten its supply chain and product distribution.

Applied Materials is navigating significant regulatory risks, including a $252 million settlement in early 2026 related to unauthorized shipments. The company is also vulnerable to international trade restrictions and tariffs, particularly those involving sales to China. It faces stiff competition from major players like Broadcom Inc (NASDAQ:AVGO) and Marvell Technology Inc (NASDAQ:MRVL) in the broader chip ecosystem. Finally, the inherent cyclicality of the semiconductor equipment industry can lead to volatile earnings when manufacturers reduce their capital budgets.

Valuation comparison

Applied Materials currently offers a lower Forward P/E based on future earnings estimates, whereas Astera Labs commands a much higher P/S ratio.

Valuation metrics sourced from Financial Modeling Prep (FMP) and may differ from other data providers.

Which stock would I buy in 2026?

Astera Labs sees its business providing connectivity for AI data centers -- meaning chips that let CPUs, GPUs, memory, and storage inside an AI rack communicate -- surging due to hyperscaler demand. Hyperscalers, those very large AI businesses, are expected to spend more than $1 trillion on tech in 2027. Astera Labs delivered excellent results in the second quarter of 2026, as reported last month, with record revenue of $392.4 million, up 104% year-over-year. The performance was driven by broad-based strength across its entire product portfolio, reflecting the diversification of its business as it continues to win new designs across multiple customers and product categories. Wall Street sees sales more than doubling in 2026 to $1.9 billion, with net income of $588 million, also well more than double 2025 levels.

Applied Materials, meanwhile, is the largest supplier in the world of wafer fabrication equipment for semiconductors. Its wide slate of offerings in chip manufacturing gives it inroads with customers by selling integrated solutions across technologies, making it harder for competitors to dislodge it. The business posted a larger-than-expected rise in sales and income in its third quarter of fiscal 2026, reported last month. The business posted a 25% increase in revenue to $9.1 billion with a 43% jump in net income. Wall Street expects full-year sales to rise 21% to $34.3 billion, with a very healthy 50% gain in net income.

Astera's growth is impressive, but the stock is fully priced as a growth stock with its current P/S and forward P/E ratios. Applied Materials normally won't be as fast-growing as it is in 2026, but the business should continue to reap the benefits of the AI boom as well as its broader market position in tech. At a more attractive set of ratios than Astera, Applied Materials is the choice here for long-term investors.

Brendan Coffey has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Amazon, Applied Materials, Broadcom, and Marvell Technology. The Motley Fool recommends Astera Labs. The Motley Fool has a disclosure policy.