trader-copycat SKILL.md skillA
trader-copycat from jakeschincariol/trader-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jakeschincariol/trader-skill/trader-copycat@git:20261014.5189e79Pins git:20261014.5189e79 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jakeschincariol/trader-skill
- Path
trader-copycat/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261014.5189e79, committed Oct 14, 2026
- Size
- 7,626 bytes
- Repository stars
- 1,388
- License
- MIT
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…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# 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
```
SEC asks every program to identify itself with a name and email. Set it once
in `trader/config.json` (`"sec_user_agent": "Your Name you@example.com"`, with
the user's real name and email) or `export SEC_USER_AGENT=...`. The tool
refuses to call SEC without it and says how to fix it. Ask the user for it;
never invent one.
## What it writes
- `trader/targets.json`: the weights to copy, in the shape every other trader
skill reads: `{ "source", "as_of", "weights": [ {"ticker", "name",
"weight"} ] }`, weights in % with 2 decimals summing to 100 over the stock
sleeve (keep the 2 decimals: budget sizing needs them), plus the
13F share, value, CUSIPs, what was skipped and why, and the caveats.
…Read the whole file at its exact version.
How to install
mdr add jakeschincariol/trader-skill/trader-copycat@sha256:e2f704e5f5af31bfThe line at the top of this page pins the label git:20261014.5189e79, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_j7sg3miwyoco6pnb)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 14, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7626 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
jakeschincariol/trader-skill · 1,388 stars · license MIT · pushed 2026-10-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_j7sg3miwyoco6pnb GET https://markdownregistry.com/api/v1/resolve?ref=jakeschincariol/trader-skill/trader-copycat GET https://markdownregistry.com/api/v1/blob/e2f704e5f5af31bf3f8ca37c12ec08bbf1e13959f2d7e34e1f5786cdfc277739
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.