AI Hedge Fund Author Open-Sources Backtester, Flags LLM Data Leakage Problem

virattt, author of the 63.8k-star AI Hedge Fund project, highlighted the fundamental challenge that LLM backtests leak because historical returns may be memorized in model weights. He released improved backtester code on GitHub to mitigate leakage.

2026-09-28 ~ 2026-09-28 · 2 related posts

• Backtesting an LLM Is Hard: virattt Hides Tickers and Dates to Curb Data Leakage — virattt · 2026-09-28
• AI Hedge Fund Releases Open-Source Backtesting Engine on GitHub — virattt · 2026-09-28