The number of people on planet earth who deeply understand the current state of the art in LLMs, the available information in a format an LLM can "reason about", good ways to condense information so that X v Y decisions can be made across a lot of Xs and Ys, and deeply understand how to do value investing in a practical way and enough about a set of industries to pull it off, is about zero.

Regardless, I'd happily take a bet at even money up to a reasonable sum that we'll wake up in 20 years to find that a system using LLMs has just destroyed the market doing fundamental analysis, for 15 years.