Arqit Quantum stock dropped 18.9% as investors shifted away from speculative growth stocks. The company introduced a new software platform, but concerns about the Federal Reserve and lack of data led to significant sell-offs. Arqit’s sales are expected to double this year, but the stock is down 29% in 2025’s trading.

Arqit unveiled SKA Central Controller, a network security platform resistant to quantum-based attacks. The platform could drive the company’s growth. Sales for the fiscal year are projected to hit $1.2 million, up from $530,000 last year. Despite strong growth expectations, Arqit’s market cap of $394.5 million already reflects this growth.

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Read more at Yahoo Finance: Why Arqit Quantum Stock Plummeted This Week