Jane Street, a leading quantitative trading firm, has significantly expanded its AI infrastructure from an initial setup of six Dell servers to a state-of-the-art data center in Texas, now housing 4,032 liquid-cooled GPUs. This expansion underscores the firm's commitment to advancing AI research and trading model development. Liquid cooling offers up to 15% greater energy efficiency compared to traditional air cooling, allowing for higher GPU density and improved heat management. In addition to the hardware upgrade, Jane Street has introduced an innovative internal auction system known as "hive bucks." This virtual currency is allocated to internal teams, who must bid against each other for GPU compute time. This system encourages teams to prioritize their projects effectively, as overspending on speculative runs limits resources for future initiatives, fostering a competitive yet efficient allocation of computational resources.