September 2025 XTX is an algorithmic trading firm: it builds statistical models that produce price forecasts for over 50,000 financial instruments worldwide. We use those forecasts to make trades. As XTX's research efforts to build better models ramped up, the demand for resources kept increasing. The firm started out with a couple of desktops and an NFS server, and 10 years later ended up with tens of thousands of high-end GPUs, hundreds of thousands of CPUs, and hundreds of petabytes of storag...