etf-analysis SKILL.md skillB

etf-analysis from yennanliu/investskill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add yennanliu/investskill/etf-analysis@git:20261024.1726f29

Pins git:20261024.1726f29 in mdr.lock. Pin the fingerprint instead.

Audit grade
B, 16 of 17 checks passed
Kind
SKILL.md skill
Repository
yennanliu/investskill
Path
plugins/us-stock-analysis/skills/etf-analysis/SKILL.md
Versions recorded
5
Latest version
git:20261024.1726f29, committed Oct 24, 2026
First version recorded
Sep 24, 2026
Size
26,887 bytes
Repository stars
280
License
MIT

ETF / index-fund due diligence — expense ratio vs. category, tracking difference, liquidity, holdings concentration and tilt, overlap with your other positions, distribution and capital-gains history, structure warnings, and an ETF-vs-top-holdings comparison, scored as an ETF Fitness Score 0–10.

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

# ETF Analysis — What You Actually Own, and What It Costs You

## ⚠️ Data Verification — Do This Before Any Analysis

Before running any analysis, always retrieve the latest fund data for the ticker:

1. **Fetch current price and NAV** — use web search or ask the user for the live price, the fund's net asset value, and the premium/discount to NAV. Never assume a price from training data.
2. **Confirm the fund facts from the issuer** — expense ratio, index tracked, AUM, inception date, holdings count, top-10 weights, and distribution history come from the issuer's factsheet and prospectus, not from memory. Fund facts change: expense ratios get cut, indexes get swapped, funds get merged or closed.
3. **State your data source** — fill in the `Data & Sources` header (next section) so the origin, as-of date, retrieval path, and confidence of every figure are explicit at the top of the output.
4. **Flag stale data explicitly** — if live data is unavailable, display this warning before proceeding:

> ⚠️ **Live data unavailable.** The following analysis uses training-data estimates which may be significantly out of date. Verify all prices and metrics before making any decisions.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add yennanliu/investskill/etf-analysis@sha256:cc89233745abd4e1

The line at the top of this page pins the label git:20261024.1726f29, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_2ilzuwecpeeus2j7.svg)](https://markdownregistry.com/a/art_2ilzuwecpeeus2j7)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Sep 24, 2026 and Oct 24, 2026, about one every 7 days.

versioncommittedcommitsizeaudit
git:20261024.1726f29 latest2026-10-24 1726f29 26,887 BB view · diff
git:20261024.cde1f3c2026-10-24 cde1f3c 25,529 BB view · diff
git:20261011.64c55752026-10-11 64c5575 24,805 BB view · diff
git:20260924.582cb022026-09-24 582cb02 24,513 BB view · diff
git:20260924.5adb9cd2026-09-24 5adb9cd 23,151 BB view

Audit of the latest version

B  16 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • fail: Frontmatter declares a name
  • pass: Frontmatter block present
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (26887 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

Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.

Source

GitHub

yennanliu/investskill · 280 stars · license MIT · pushed 2026-10-24 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2ilzuwecpeeus2j7
GET https://markdownregistry.com/api/v1/resolve?ref=yennanliu/investskill/etf-analysis
GET https://markdownregistry.com/api/v1/blob/cc89233745abd4e12918489eacbacb0ec8c0add38d1756f2cca3aac3f6de7811

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.

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