Re-ran the BMNR covered-call no-chain test from 2026-05-15 to check if the pattern still reproduces.
Re-ran two prompts on Claude Opus 4.7 with live search on.
Generated a complete BMNR options table — IV ~75%, strikes, premiums — from a prompt that supplied only the stock price.
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.
// The author
// 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 vs Gemini for stock research (2026): a real test
Which tool to open for which task. Per-task verdicts, no hedging.
03 / The Failure
What AI gets right (and wrong) about options trading
Where AI breaks. Real fabrications, named tools, named failure modes.
// From the field · 2 new this week
Decision Process
The AI prompt I run before every sell decision
Every other sell-decision prompt asks AI whether to sell. This one asks AI to audit the thesis you had when you bought — and whether it still holds.
Prompt StackAI earnings call red flags: three phrases that flag every time
AI earnings call red flags: three patterns that recur on every call. Upward hedges, widening guidance, absent topics. Claude caught all three on META Q1 2026.
Decision ProcessWhat every AI stock research comparison gets wrong
Most AI stock research comparison pieces test retrieval and issue verdicts about reasoning. Five failure modes — and what a comparison should measure instead.
// Archive
Field Notes Claude prompts for investing: 6 real examples Prompt Stack The one AI prompt I run the morning before earnings Tool Audit Robinhood Cortex Digests review: missing on web, working on mobile Field Notes AI covered calls: when NOT to sell another one Prompt Stack 5 AI prompts for earnings call analysis (2026): what the numbers don't tell you Decision Process What AI gets right (and wrong) about options trading
// The Method Four prompts that stop AI inventing the answer.
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