Key Points - IonQ is scaling rapidly with triple-digit revenue growth and a strategic pivot into domestic semiconductor manufacturing. - Rigetti Computing remains focused on hybrid quantum-classical testbeds and deep modular hardware integration. - Which quantum computing stock represents the more compelling opportunity for investors in 2026? The quantum computing race is accelerating as firms move from theoretical models to functional hardware. Is IonQ(NYSE:IONQ) or Rigetti Computing(NASDAQ:RGTI) the better buy for your portfolio in 2026? Both companies represent a high-stakes bet on the future of high-performance computing. IonQ focuses on trapped-ion technology to build its systems, while Rigetti specializes in superconducting processors. This comparison evaluates their financial health, strategic growth, and unique risks to help you decide which stock is a more compelling opportunity today. The case for IonQ IonQ develops trapped-ion quantum computers and offers cloud access to government, enterprise, and research customers. The company recently completed the acquisition of SkyWater Technology, establishing a domestic semiconductor foundry to bolster its infrastructure. Customer concentration like this adds a layer of risk to the business, as revenue heavily depends on a few government entities and cloud partnerships. In FY 2025, revenue reached nearly $130.0 million, which was a 201.9% increase from the roughly $43.1 million reported in FY 2024. Despite this top-line surge, the company reported a net loss of approximately $510.4 million. The net margin was roughly -392.6%, which measures what percentage of each dollar earned as revenue remains after accounting for all expenses. As of its December 2025 balance sheet, the debt-to-equity ratio was 0.0x, meaning total debt is zero relative to shareholder equity. The current ratio, which measures the ability to cover short-term liabilities with short-term assets, was roughly 15.5x. Free cash flow was negative $299.6 million, representing cash from operations minus capital expenditures for the fiscal year.