Bridgewater Associates
One of the world's largest hedge funds, which tested custom AI on finance tasks.
Bridgewater Associates is one of the world’s largest hedge funds, managing money for institutions using a highly systematic, data-driven approach to investing.
Bridgewater appears in AI news for a revealing experiment: working with a top AI startup, it fine-tuned a free, downloadable open-weight model on the judgment of its own experts. The customised model outperformed every big-name closed AI on finance tasks — at roughly one-fourteenth of the cost.
The lesson reaches well beyond Wall Street. It suggests that for specialised work, a smaller model trained on your own domain knowledge can beat a bigger, general-purpose one, while keeping costs and data firmly under your control.