Inspiration

We wanted to see if an AI model could reason like a trader, making disciplined buy or sell decisions based on real data beyond mere price prediction.

What We Built

  • Collected daily market data via Polygon API.

  • Engineered 50+ features (RSI, MACD, volatility, etc.).

  • Used Gemini to decide actions (BUY / SELL / HOLD).

  • Simulated portfolio performance over 2024 using Python.

What I Learned

  • Clean data matters more than complex models.

  • Technical indicators capture trader psychology.

  • LLMs can combine quantitative signals with qualitative reasoning.

Challenges

  • LLM outputs were inconsistent → enforced structured prompts.

Outcome

  • We found that using this AI system outperformed simply investing in QQQ.

  • Moreover, I built an interactive system that users can operate directly to visualize trades and simulate investment outcomes.

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