InvestSkill plugin for Grok Build

Community Claude Code plugin, installs in GrokPluginDevelopment

US stock analysis skills for LLMs (Claude code, Gemini ...) | #AI

How to install InvestSkill in Grok Build

1. Add this repo as a plugin marketplace in Grok Build (once per computer):

grok plugin marketplace add yennanliu/InvestSkill

2. Install the plugin:

grok plugin install us-stock-analysis@yennanliu/InvestSkill --trust
✓ Install-checked in Grok Buildchecked Oct 18, 2026

Review before you trust it. --trust lets this plugin's hooks, MCP servers and scripts run code on your computer. It's a community repo that neither xAI nor GrokStacks has reviewed, so read its code first.

Then start a new Grok session, or press r in /plugins, to load it.

Inside Grok Build: type /plugins, open the Marketplace tab, press a and add yennanliu/InvestSkill, then select us-stock-analysis and press i.

Command format: Grok Build's plugin guide

What we checked: on Oct 18, 2026 it installed with grok 1.0.62 and Grok found 34 skills. That's an install check only: we haven't run it in a live Grok session.

What it contains

Skills (25)

  • 10k-digest — Deep-read a 10-K annual report and output a structured markdown digest — abstract, section summaries, key metrics, and sourced references. Output in English or Traditional Chinese.
  • bear-case — Build the strongest possible bear case against a stock — a deliberate short-seller red-team that argues why NOT to hold, surfacing counterevidence to any bullish thesis
  • catalyst-calendar — Forward-looking catalyst calendar identifying upcoming events and their expected price impact over a 90-day window
  • chart-master — Generate professional financial charts in Mermaid, ASCII, or HTML/Chart.js — MA lines, histograms, candlestick, volume, RSI/MACD, and more for markdown reports
  • competitor-analysis — Deep competitive moat analysis, market position assessment, and industry dynamics for one company against its direct rivals. To map an industry's supply / value chain and find chokepoints, use industry-map
  • dcf-valuation — Discounted Cash Flow (DCF) intrinsic value modeling with sensitivity analysis
  • dividend-analysis — Comprehensive capital allocation analysis: dividends, buybacks, M&A, debt management, and FCF deployment
  • earnings-call-analysis — Analyze earnings call transcripts for sentiment, key themes, and management tone
  • earnings-preview — The before-earnings skill — consensus vs. whisper, 8-quarter beat rate and post-print move distribution, options-implied vs. realized move, what the current price already assumes, the KPIs to watch, and a three-scenario grid (beat-and-raise
  • economics-analysis — Analyze US economic indicators and their impact on markets
  • etf-analysis — 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-h
  • fact-check — Claim-level verification of any report or data set — extract every figure and factual claim, check each against a primary source (SEC filing, company IR, FRED, exchange data, or the user's own document), recompute derived numbers, mark ✅ ve
  • financial-report-analyst — Analyze company financial reports (10-K, 10-Q, annual reports) and extract actionable investment insights — statement quality, red flags, and a signal. For a structured section-by-section summary document of a 10-K rather than an investment
  • full-report — Run InvestSkill analysis modules on a stock at configurable depth and compile a professional HTML report saved to the output/ directory
  • fundamental-analysis — Deep fundamental analysis of US stocks using financial statements
  • industry-map — Map an industry's supply / value chain as a directed graph — upstream to downstream — to locate a company's position, find chokepoints and margin pools, and surface second-order investment ideas
  • insider-trading — Track and analyze insider buying/selling activity from SEC Form 4 filings
  • institutional-ownership — Track changes in institutional holdings and identify smart money moves from 13F filings
  • learning-coach — Explains any InvestSkill output like a mentor — every metric in plain words, why it matters, its good / bad range, and the lesson that teaches it — then asks 3–5 Socratic questions and "what would change your mind?". --level beginner / inte
  • options-analysis — Analyze options Greeks, implied volatility, and strategy selection for US stocks
  • portfolio-review — Review and analyze investment portfolio performance and allocation
  • position-ladder — Plan a staged position — entry ladder, share-count floor/ceiling, and the trim/re-add cycle that lowers average cost — with lot accounting, wash-sale checks, total-return honesty, and a thesis-break exit gate
  • report-generator — Generate professional HTML/PDF investment reports with interactive visualizations
  • research-bundle — Deprecated — use full-report instead. Chained multiple analysis skills into a unified investment thesis; superseded by full-report's configurable --depth and HTML output.
  • result-validator — Validate investment analysis results and score confidence across data quality, methodology, and signal consistency

About this listing

InvestSkill is a community plugin on GitHub by yennanliu, written as a Claude Code plugin that Grok Build installs. We install-checked it in Grok; we haven't run it in a live session or reviewed its code. When we installed it, Grok found 25 skills. Its license is MIT. We checked commit dc9fa39fcdea. It's one of 409 listings in the Development category on GrokStacks.

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InvestSkill FAQ

How do I install InvestSkill in Grok Build?

Add the repo as a marketplace with grok plugin marketplace add yennanliu/InvestSkill, then run grok plugin install us-stock-analysis@yennanliu/InvestSkill --trust. Then start a new Grok session, or press r in /plugins, to load it.

Is InvestSkill an official Grok Build plugin?

No. InvestSkill is a community plugin on GitHub by yennanliu, not in xAI's official Grok Build marketplace. We checked that it installs and what Grok loads from it, but haven't run it in a live Grok session or reviewed its code.

What does InvestSkill include?

According to what Grok loaded in our install check, InvestSkill includes 25 skills: 10k-digest, bear-case, catalyst-calendar, chart-master, competitor-analysis, dcf-valuation….

Details

Type
Plugin
Category
Development
Source
Community Claude Code plugin, installs in Grok
License
MIT
Author
yennanliu
Keywords
agent, financial, financial-analysis, gemini, investment, llm, stock, stock-market, us-stock
Source repo
https://github.com/yennanliu/InvestSkill
Checked commit
dc9fa39fcdea
Homepage
http://yennj12.js.org/InvestSkill/
Checked by GrokStacks
Install-checked in Grok Build on Oct 18, 2026; not run in a live session

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For maintainers: badge and embeds

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Listed on GrokStacks

Markdown

[![Listed on GrokStacks](https://grokstacks.com/badge.svg)](https://grokstacks.com/p/investskill/)

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<a href="https://grokstacks.com/p/investskill/"><img src="https://grokstacks.com/badge.svg" alt="Listed on GrokStacks" width="164" height="28"></a>

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<a href="https://grokstacks.com/p/investskill/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #2a2e3c;border-radius:12px;background:#0a0b0f;color:#e8eaf0;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#e8eaf0">InvestSkill</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#9aa0b1">Community plugin for Grok Build · 25 skills</span><span style="display:block;margin:0 0 10px;color:#c9cdd8">US stock analysis skills for LLMs (Claude code, Gemini ...) | #AI</span><span style="font-size:12px;font-weight:600;color:#7c9cff">View on GrokStacks →</span></a>

Markdown summary

**[InvestSkill on GrokStacks](https://grokstacks.com/p/investskill/)**: Community plugin for Grok Build with 25 skills. Install: `grok plugin install us-stock-analysis@yennanliu/InvestSkill --trust` (after `grok plugin marketplace add yennanliu/InvestSkill`)

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