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Fundamentals (Financial Data & Piotroski F-Score)

Pulls financials, earnings and key metrics from Yahoo Finance and scores a company's financial strength with the Piotroski F-Score.

Data & AnalyticsIntermediate★ 334⑂ 74AI score 9/10Last updated: Aug 10, 2026

What it does

  • Runs scripts/fundamentals.py SYMBOL to return JSON with key metrics (market cap, P/E, EPS, dividend), quarterly/annual income statement data, and historical vs estimated earnings.
  • Supports --type all|financials|earnings|info so you can pull only what you need.
  • Runs scripts/piotroski.py SYMBOL to compute the Piotroski F-Score (0–9) across nine criteria: net income, ROA, operating cash flow, earnings quality, long-term debt, current ratio, share dilution, gross margin, and asset turnover.
  • Returns a per-criterion pass/fail breakdown plus a plain-language interpretation (8–9 excellent, 6–7 good, 4–5 fair, 0–3 poor), with all timestamps in America/New_York and generated_at / data_delay fields.

Who it's for

  • Retail investors who want a fast fundamental health check on a ticker
  • Value screeners looking for improving-fundamentals candidates
  • Analysts comparing financial strength across a watchlist
  • Python developers automating investment research with yfinance

Example uses

  1. "Did AAPL beat earnings estimates last quarter?" → compares actual vs estimated earnings.
  2. "Compute the Piotroski F-Score for MSFT" → returns the 9-criterion breakdown and total score.
  3. "Compare P/E, dividend yield and operating cash flow for KO vs PEP" → queries both tickers and tabulates the results.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/staskh/trading_skills/HEAD/.claude/skills/fundamentals/SKILL.md

What I want: (describe your task here)

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↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the .claude/skills/fundamentals folder from the GitHub repo staskh/trading_skills into my ~/.claude/skills/fundamentals/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/staskh/trading_skills.git && mkdir -p ~/.claude/skills && cp -r trading_skills/.claude/skills/fundamentals ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal and clone the repo: git clone https://github.com/staskh/trading_skills.git
  2. Create the skills directory: mkdir -p ~/.claude/skills
  3. Copy the skill: cp -r trading_skills/.claude/skills/fundamentals ~/.claude/skills/
  4. The skill calls Python files under the repo's scripts/ folder, so run Claude Code from inside the cloned repo for the paths to resolve.
  5. Install dependencies: pip install pandas yfinance (or uv sync at the repo root).
  6. If you don't have uv, substitute python for uv run python as the skill notes.
  7. Restart Claude Code and try: "Show me AAPL fundamentals and its Piotroski score."
View source on GitHub ↗License: MIT