Arqit Quantum Inc. (ARQQ) Stock

About Arqit Quantum Inc.

Arqit Quantum Inc. is led by CEO Andrew James Leaver, publicly traded since 2021.

Arqit Quantum Inc. (ARQQ) stock trades at $16.41 with a market capitalization of $285.57M. The stock is valued at a negative price-to-earnings (P/E) ratio of -7.74, reflecting a net loss over the last twelve months, price-to-book of 14.32, price-to-sales of 394.52. Over the past 52 weeks the stock has ranged between $11.52 and $62.00, and currently trades 73.5% below its 52-week high.

On profitability, Arqit Quantum Inc. generates a return on equity (ROE) of -183.74% (negative, reflecting a net loss), return on capital employed of -177.86%, an operating margin of -3500.00%, a net profit margin of -56.01%.

Arqit Quantum Inc. by the numbers, 2019–2025

Between 2019 and 2025 Arqit Quantum Inc. reported revenue of $0 rising to $1.0M. Compounded, revenue has grown —% a year over five years, -47.7% over three, —% over the last twelve months. Net profit fell to $-35.0M.

The most recent net margin is -56.01%. On a trailing twelve-month basis to Mar '26, revenue is $1.0M and net profit $-77.0M.

Borrowings fell from $3.0M to $1.0M, cash from operations was $-30.0M in the latest year, positive in 1 of the last 7.

Return on equity has averaged 38.0% over five years, and was -129.6% in the most recent year.

The share price itself has compounded at —% a year over five years, —% over three, —% over the last year. Past price movement is history, not a forecast.

Figures are as reported and in the company's own reporting currency. They describe what has already happened and carry no implication about what follows.

Arqit Quantum Inc. (ARQQ) — frequently asked questions