Today, we are announcing our $300M Series B raise, led by Andreessen Horowitz and joined by Sapphire Ventures, Menlo Ventures, 645 Ventures, Arm, Eclipse, Emergence, Factory, Hudson River Trading, M12, OnePrime Capital, Prosperity7, QuantumLight, Samsung Ventures, Tiger Global Management, Triatomic, Wing Ventures, and XTX Markets.

XTX, the trading firm owned by London's biggest taxpayer Alex Gerko, posted record profits of £1.7 billion in 2025, up 33% from the previous year. Revenues rose 44% to £3.9 billion as the company capitalised on market volatility. Gerko, who owns 75% of XTX, paid himself £682 million last year and paid £331.4 million in personal tax, making him London's highest taxpayer. The Russian-born British citizen founded XTX in 2015 and has grown it into one of Britain's most profitable companies using machine learning technology to handle over $250 billion in daily transactions. The 46-year-old mathematician has donated more than £350 million to charities since 2020, focusing on mathematics education and conservation efforts.

Lucida Medical raises £8.7m to expand its AI-powered same-day cancer diagnosis platform, speeding up detection and supporting earlier treatment.