David Arias, CFA

Pesquisa

I tested AI Hedge Fund, the open-source repo with 64,000 GitHub stars

AI Hedge Fund step by step: the blend, the long-only weights and the 25% cap as math, and a live paper run where Graham's double vote decided Adobe and Autodesk.

13 out 2026

Pesquisa

GPT-6.1 Sol is OpenAI's best deal, but it disappoints in finance, ranking 30th of 72

GPT-6.1 Sol on the Vals leaderboards of 29 September: the knee of the cost curve overall, and 30th of 72 on finance, behind models that cost cents per test.

30 set 2026

Pesquisa

Is Jev efficient for RAG? A test on 10-Ks from Apple, Microsoft, Nvidia and Amazon

Agentic RAG against Jev RAG on 50 questions about four large-cap 10-Ks: 50 of 50 right with one LLM call, 46 for the agent, and why every agentic miss read the wrong year.

27 set 2026