The Motley Fool·2025-11-16 18:15Core Viewpoint - Arqit Quantum's stock experienced a significant decline despite the launch of a new software platform, primarily due to macroeconomic and geopolitical concerns affecting speculative growth stocks [1][2][3] Company Developments - Arqit launched the SKA Central Controller, a network security platform aimed at providing encryption against quantum-based attacks, which could be pivotal for the company's growth [5] - For the current fiscal year, Arqit is projecting sales of approximately $1.2 million, a substantial increase from the previous year's guidance of around $530,000 [6] Market Performance - The stock price of Arqit Quantum fell by 18.9% over the last week of trading, reflecting a broader trend of investors moving away from speculative growth stocks [1][2] - The company's market capitalization stands at $394.5 million, indicating that strong growth expectations are already factored into the stock price [6] - The stock has seen a year-to-date decline of 29% as of the latest trading period [3]