Generated a complete BMNR options table — IV ~75%, strikes, premiums — from a prompt that supplied only the stock price.
Returned a specific earnings date for an upcoming W4 release, sourced from MarketBeat via web search, with no uncertainty…
Estimated BMNR $23 call assignment probability via Black-Scholes N(d2) with a sigma of 90–110% it had inferred from historical…
I run AI on my own investments. I check what it gets wrong.
Tuesdays · what worked, what didn't, the prompts I'd run again.
// About Me
// New here? Start with these.
01 / The Method
The single prompt change that made AI analysis worth using
Start here. The one prompt change that fixes most AI investment outputs.
02 / The Comparison
ChatGPT vs Claude vs Perplexity for stock research
Which tool to open for which task. Per-task verdicts, no hedging.
03 / The Failure
AI limitations in options trading
Where AI breaks. Real fabrications, named tools, named failure modes.
// From the field
Tool Audit
Robinhood Cortex Digests: missing on web, working on mobile
Robinhood Cortex Digests review: missing on the UK website, working cleanly on the mobile app, useful only for well-known company names.
Field NotesAI covered calls: when NOT to sell another one
AI covered call re-entry: the five conditions where the rules say wait, the prompt that runs the check, and six real BMNR trades behind it.
Prompt Stack5 AI prompts for earnings call analysis: what the numbers don't tell you
Five AI prompts for earnings call analysis that find what the numbers don't: omissions, hedge patterns, and language drift from last quarter.
// Archive
Decision Process What AI gets right (and wrong) about options trading Tool Audit Best AI tools for earnings analysis: I tested three on a real results release Tool Audit ChatGPT vs Claude vs Perplexity vs Gemini for stock research: a real test Tool Audit Best free AI tools for stock research Prompt Stack The single prompt change that made AI analysis worth using Decision Process 5 questions to ask AI before buying any stock
// The Method
Four prompts that stop AI inventing the answer.