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trader-copycat

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The Reverse Engineer. Reads a famous investor's public SEC filings (the quarterly 13F-HR, plus Form 4 if you want the insider trades) and rebuilds their portfolio as weights you can copy: every position, its share of the fund, what they bought, added, trimmed and sold since the last quarter, with tickers matched to every CUSIP. Then it writes trader/targets.json so the budget skill can size it to your money. Use when the user says "copy Buffett", "copy Berkshire", "what does Ackman own", "reverse engineer this investor", "show me their 13F", "what did they buy last quarter", "copy the top 5", or names any fund or famous investor.

trader-copycat/SKILL.md

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Last checked
Nov 9, 2026

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1,633
Repository last updated
Oct 14, 2026
License
MIT

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# trader-copycat

Copying an investor starts with what they are legally required to show: a
13F-HR, filed with the SEC every quarter by any investment manager with over
$100 million in US-listed stocks and other 13(f) securities. This skill reads
it straight from SEC EDGAR, rebuilds the portfolio, and turns it into target
weights for your own account.

Tool in this folder (standard library Python, no keys):

```bash
python3 "${CLAUDE_SKILL_DIR}/edgar13f.py" --help
```
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