Let ChatGPT manage a live micro-cap stock portfolio
ChatGPT · Finance · checked 2026-11-02
Nathan B. Smith’s Substack series runs a six-month experiment giving ChatGPT end-of-day micro-cap market data—closes, volume, and related fields—and letting the model decide portfolio actions with weekly Deep Research reevaluation. Week 5 recounts a rough market stretch where planned limit orders failed to fill, forcing worse exits the next day, and documents how the model adjusted. The project is framed as a public test of whether an LLM can produce consistent alpha in a noisy micro-cap book, not as investment advice. Readers get the prompts-and-data loop: feed real prints, allow the model to rebalance within stated rules, then publish the weekly scorecard.
At a glance
- Brand
- ChatGPT
- Jobs
- Finance
- Sources
- 1
Dimensions
- Brands: ChatGPT
- Agents: ChatGPT Work · Visit via /go/
- Occupations: Finance
- Industries: finance
- Tasks: analysis, research
Sources
- https://nathanbsmith729.substack.com/p/chatgpts-micro-cap-portfolio-week-9f4 · fetched 2026-11-02 — “I give it real data (closing price, volume, etc.) at the end of every trading day, and it has full control over its assets”
Last checked 2026-11-02. Description source: detail-page.