Arm vs. ASML: Which Technology Stock Is a Better Buy for 2027?

Investors seeking growth in the tech sector often face a choice between Arm (ARM -4.63%) and ASML (ASML -0.13%), two companies that form the backbone of modern computing. While both are vital to the global electronics market, they serve distinct roles in the supply chain. Arm specializes in chip architecture, licensing its designs to other manufacturers like Apple and Qualcomm, while ASML provides the manufacturing equipment required to produce advanced microchips.

Assessing their individual business models and financial strength is crucial to determining which stock aligns with your investment strategy.

Arm designs the foundational technology found in virtually every smartphone worldwide. By licensing its architecture to other chipmakers, Arm occupies a central position in the semiconductor ecosystem. The company's recent expansion into artificial intelligence and data centers cements its status as a prominent semiconductor stock.

In the fiscal year concluding March 31, 2026, Arm's revenue reached nearly $4.9 billion, marking a year-over-year increase of approximately 22.8%. Net income for the same period amounted to roughly $904.0 million, resulting in a net margin of about 18.4%. This growth is driven by the expanding adoption of Arm's latest architecture designs, which generate both upfront licensing fees and ongoing royalties for each chip sold.

As of its March 2026 balance sheet, Arm's debt-to-equity ratio stood at approximately 0.1x, indicating a low level of leverage. The current ratio of around 6.0x suggests robust liquidity to cover short-term debts with easily convertible assets. Free cash flow, the cash remaining after operational expenses and equipment investments, amounted to nearly $979.0 million.

However, it is worth noting that stock-based compensation accounted for roughly 69% of operating cash flow, which can inflate reported cash generation as it is considered a non-cash expense.

ASML holds a unique position as the sole supplier of extreme ultraviolet lithography systems, essential for manufacturing the most advanced chips. These machines are utilized by industry leaders such as Intel and Taiwan Semiconductor Manufacturing, enabling them to produce high-performance chips for smartphones, servers, and artificial intelligence hardware.

In the fiscal year ending December 31, 2025, ASML's revenue surged to nearly $36.2 billion, representing a 15.6% increase compared to the previous fiscal year. The company reported net income of approximately $10.7 billion, yielding a net margin of close to 29.4%. These results underscore the consistent demand for its lithography systems and the growing revenue from service offerings due to its extensive machine network.

As of its December 2025 balance sheet, ASML's debt-to-equity ratio was roughly 0.2x, reflecting a moderate level of debt. The current ratio of about 1.3x indicates sufficient liquidity to meet short-term obligations. Free cash flow for the fiscal year ending December 31, 2025, reached nearly $12.3 billion. Despite competition from open-source alternatives like RISC-V and the potential for slowing smartphone market innovation, ASML faces strict export controls that may restrict its ability to deliver its advanced tools to certain international markets.

Additionally, the historically cyclical nature of the semiconductor industry could lead to periods of reduced demand for ASML's equipment if manufacturers postpone their capital expenditure plans. Furthermore, the intricate technical requirements of ASML's next-generation machines pose risks if adoption by manufacturers is slower than expected.

Comparatively, ASML appears more affordable than Arm, with lower Forward P/E and P/S ratios. Valuation metrics sourced from Financial Modeling Prep may vary among different providers. The critical question for potential investors is how much of the AI story is already reflected in reported results versus how much remains speculative.

ASML's management suggests that some customers are expressing interest in placing orders for 2029 and 2030, while planned supply for 2027 and 2028 is expected to fall short of demand, indicating existing growth in order books and income statements. Arm's AI story is genuine but largely remains theoretical until royalties and chip sales catch up.

This distinction is crucial in evaluating the investment case. Arm's multiple already assumes successful royalty and chip sales implementation, leaving limited room for error if a quarter underperforms. Considering a multi-year investment horizon, ASML emerges as the more compelling choice for investors seeking AI exposure without bearing a high and risky premium.

The company's strong position in the semiconductor industry, coupled with its robust financial health, makes it a solid long-term investment. Arm, while offering AI exposure, may appeal to investors with a higher risk tolerance willing to endure volatility and wait for the royalty and chip-selling business to justify its valuation.

Ultimately, the decision between Arm and ASML hinges on your investment objectives, risk appetite, and timeframe, with ASML proving to be the more attractive option for a multi-year strategy focused on AI and long-term semiconductor growth.