Applied Materials vs. AMD: Which AI Semiconductor Stock Is a Better Buy in 2026?

Choosing between Applied Materials (NASDAQ:AMAT) and Advanced Micro Devices (NASDAQ:AMD) means weighing a highly profitable chip equipment supplier against a faster-growing chip designer.

Applied Materials makes the equipment that chip factories use to produce semiconductors. AMD designs processors for products ranging from game consoles to large data centers and relies on outside foundries to manufacture them. Both sell into the demand that has drawn investors to artificial intelligence (AI) stocks, but they offer very different risk and reward profiles.

The case for Applied Materials

Alongside its manufacturing equipment, Applied Materials sells related services and factory automation software. The company occupies a highly technical niche among semiconductor stocks, selling to the large manufacturers that fabricate chips. That customer base is concentrated, and two customers accounted for approximately 19% and 15% of net revenue in fiscal 2025, which ended in October 2025.

In fiscal 2025, revenue reached nearly $28.4 billion, up about 4.4% from the previous year. The company reported net income of roughly $7.0 billion for the same period. Revenue and pre-tax income both rose, but the net margin, which measures how much profit is kept from every dollar of sales, declined to approximately 24.7% from 26.4% as the provision for income taxes more than doubled.

As of Oct. 26, 2025, the debt-to-equity ratio was roughly 0.3x. That ratio compares total debt with shareholders' equity, and a figure this low points to a conservative approach to borrowing. The current ratio, which compares short-term assets to short-term liabilities, was approximately 2.6x. Free cash flow, which the company calculates as operating cash flow minus capital expenditures, totaled nearly $5.7 billion for the fiscal year.

The case for Advanced Micro Devices

AMD designs processors for data centers and personal computers, as well as the semi-custom chips inside game consoles. A small number of customers account for a large share of its revenue, and cloud and hyperscale data center operators buy a substantial portion of its data center products.

In October 2025, AMD signed an agreement with OpenAI to deploy 6 gigawatts of its graphics processing units (GPUs), and in February 2026 it announced a similar agreement with Meta Platforms (NASDAQ:META) covering up to 6 gigawatts. Its chips also power the PlayStation 5 from Sony (NYSE:SONY) and the Xbox Series S and X consoles from Microsoft (NASDAQ:MSFT).

In 2025, revenue reached about $34.6 billion, up about 34.3% from the previous year. Growth came from the data center segment, where revenue rose 32%, and from the client and gaming segment, where it rose 51%. Net income for the period was roughly $4.3 billion, with a net margin of about 12.5%, held down in part by research and development spending, which rose about 25% to $8.1 billion.

As of Dec. 27, 2025, the debt-to-equity ratio was approximately 0.05x on a total debt-to-shareholders' equity basis. The current ratio stood at nearly 2.9x, indicating ample capacity to cover short-term obligations. Free cash flow for the year was roughly $5.5 billion under AMD's own definition, which starts with operating cash flow from continuing operations and subtracts capital expenditures.

That measure excludes about $1.2 billion of operating cash flow from discontinued operations, the ZT Systems manufacturing business that AMD sold in October 2025. Stock-based compensation of about $1.6 billion equaled roughly 25% of operating cash flow from continuing operations. Because it is a non-cash expense added back to cash flow in the cash flow statement, it increases reported cash generation.

Risk profile comparison

Applied Materials faces significant risks from evolving export controls and trade policies, particularly those involving China, which accounted for about 30% of its revenue in fiscal 2025. On Feb. 11, 2026, the company agreed to pay $252.5 million to the U.S. Commerce Department to resolve allegations that certain customer shipments to China between November 2020 and July 2022 did not comply with export regulations.

The Justice Department and the Securities and Exchange Commission closed their related investigations without action. The semiconductor industry has also historically been cyclical. The company says AI-related demand is difficult to forecast, and shifting demand can pressure its margins and cash flow.

AMD sells into highly competitive markets against rivals such as Nvidia (NASDAQ:NVDA) and Intel (NASDAQ:INTC). The company relies on third parties to manufacture its chips, including Taiwan Semiconductor Manufacturing (NYSE:TSM) and GlobalFoundries (NASDAQ:GFS), so any disruption at these foundries would directly affect its ability to deliver products. U.S. export controls on its Instinct MI308 data center GPUs also restrict sales to China, and AMD's 2025 results included approximately $440 million of net inventory and related charges tied to those controls.

Dilution is another risk for AMD shareholders. The company has issued warrants to OpenAI and Meta Platforms, each covering up to 160 million shares at an exercise price of $0.01 per share, that vest as the customers reach GPU purchase milestones and AMD's stock reaches specified price targets.

Together, the warrants equal about 20% of the roughly 1.63 billion shares outstanding as of late July 2026, and none had vested as of June 27, 2026. On Sept. 28, 2026, AMD also announced an agreement to acquire World Labs, an AI model and research lab, in an all-stock transaction valued at approximately $8.2 billion.

Valuation comparison

Applied Materials carries the lower forward price-to-earnings (P/E) and price-to-sales (P/S) ratios, and AMD grew revenue much faster in 2025.

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

Which stock would I buy in 2026?

Applied Materials looks like the better buy to me, though I'd treat it as a position to add to over time. Chip equipment demand moves in cycles, and the stock has already more than doubled in the past year.

What tips the comparison is how each business has trended since the full-year figures above. Applied Materials reported record revenue for its fiscal third quarter on Aug. 13, 2026. The midpoint of management's guidance for the quarter ending in October implies sales growth of about 50% from a year earlier, roughly twice the pace it posted just a year ago. AMD's revenue also grew about 50% in its second quarter, but its Aug. 4 outlook points to somewhat slower growth in the third quarter. The growth gap that supports AMD's richer multiples appears to be narrowing.

AMD shareholders also face a dilution question that Applied Materials shareholders don't. The warrants from OpenAI and Meta Platforms could add about a fifth to the share count if every milestone is met, and the pending World Labs purchase would be paid for in stock. The warrants are tied to large chip orders, so the trade may prove worthwhile, but it raises the bar for per-share results.

None of this makes AMD a stock to avoid. It is the bigger business with more direct exposure to AI computing, and for investors who hold a diversified portfolio for five years or more, there's room to own both.

Mike Schwenk has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Advanced Micro Devices, Applied Materials, Globalfoundries, Intel, Meta Platforms, Microsoft, Nvidia, and Taiwan Semiconductor Manufacturing. The Motley Fool has a disclosure policy.